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TTreePerfStats Class Reference

TTree I/O performance measurement.

see example of use below.

The function FileReadEvent is called from TFile::ReadBuffer. For each call the following information is stored in fGraphIO

  • x[i] = Tree entry number
  • y[i] = 1e-6*(file position)
  • ey[i] = 1e-9*number of bytes read For each call the following information is stored in fGraphTime
  • x[i] = Tree entry number
  • y[i] = Time now
  • ey[i] = readtime, eg timenow - start The TTreePerfStats object can be saved in a ROOT file in such a way that its inspection can be done outside the job that generated it.

Example of use:

{
TFile *f = TFile::Open("RelValMinBias-GEN-SIM-RECO.root");
T = (TTree*)f->Get("Events");
Long64_t nentries = T->GetEntries();
T->SetCacheSize(10000000);
T->SetCacheEntryRange(0,nentries);
T->AddBranchToCache("*");
//
TTreePerfStats *ps= new TTreePerfStats("ioperf",T);
//
for (Int_t i=0;i<nentries;i++) {
T->GetEntry(i);
}
ps->SaveAs("cmsperf.root");
}
#define f(i)
Definition RSha256.hxx:104
long long Long64_t
Definition RtypesCore.h:80
int nentries
A ROOT file is a suite of consecutive data records (TKey instances) with a well defined format.
Definition TFile.h:51
static TFile * Open(const char *name, Option_t *option="", const char *ftitle="", Int_t compress=ROOT::RCompressionSetting::EDefaults::kUseCompiledDefault, Int_t netopt=0)
Create / open a file.
Definition TFile.cxx:4053
TTree I/O performance measurement.
virtual void SaveAs(const char *filename="", Option_t *option="") const
Save this object to filename.
TTreePerfStats()
default constructor (used when reading an object only)
A TTree represents a columnar dataset.
Definition TTree.h:79

then, in a root interactive session, one can do:

root > TFile f("cmsperf.root");
root > ioperf->Draw();
root > ioperf->Print();

The Draw or Print functions print the following information:

  • TreeCache = TTree cache size in MBytes
  • N leaves = Number of leaves in the TTree
  • ReadTotal = Total number of zipped bytes read
  • ReadUnZip = Total number of unzipped bytes read
  • ReadCalls = Total number of disk reads
  • ReadSize = Average read size in KBytes
  • Readahead = Readahead size in KBytes
  • Readextra = Readahead overhead in percent
  • Real Time = Real Time in seconds
  • CPU Time = CPU Time in seconds
  • Disk Time = Real Time spent in pure raw disk IO
  • Disk IO = Raw disk IO speed in MBytes/second
  • ReadUZRT = Unzipped MBytes per RT second
  • ReadUZCP = Unipped MBytes per CP second
  • ReadRT = Zipped MBytes per RT second
  • ReadCP = Zipped MBytes per CP second

NOTE 1 :

The ReadTotal value indicates the effective number of zipped bytes returned to the application. The physical number of bytes read from the device (as measured for example with strace) is ReadTotal +ReadTotal*Readextra/100. Same for ReadSize.

NOTE 2 :

A consequence of NOTE1, the Disk I/O speed corresponds to the effective number of bytes returned to the application per second. The Physical disk speed is DiskIO + DiskIO*ReadExtra/100.

Definition at line 38 of file TTreePerfStats.h.

Classes

struct  BasketInfo
 

Public Types

using BasketList_t = std::vector< std::pair< TBranch *, std::vector< size_t > > >
 
- Public Types inherited from TVirtualPerfStats
enum  EEventType {
  kUnDefined , kPacket , kStart , kStop ,
  kFile , kFileOpen , kFileRead , kRate ,
  kNumEventType
}
 
- Public Types inherited from TObject
enum  {
  kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 ,
  kBitMask = 0x00ffffff
}
 
enum  { kSingleKey = (1ULL << ( 0 )) , kOverwrite = (1ULL << ( 1 )) , kWriteDelete = (1ULL << ( 2 )) }
 
enum  EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) }
 
enum  EStatusBits {
  kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) ,
  kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 13 ))
}
 

Public Member Functions

 TTreePerfStats ()
 default constructor (used when reading an object only)
 
 TTreePerfStats (const char *name, TTree *T)
 Create a TTree I/O perf stats object.
 
virtual ~TTreePerfStats ()
 Destructor.
 
virtual void Browse (TBrowser *b)
 Browse.
 
virtual Int_t DistancetoPrimitive (Int_t px, Int_t py)
 Return distance to one of the objects in the TTreePerfStats.
 
virtual void Draw (Option_t *option="")
 Draw the TTree I/O perf graph.
 
virtual void ExecuteEvent (Int_t event, Int_t px, Int_t py)
 Return distance to one of the objects in the TTreePerfStats.
 
virtual void FileEvent (const char *, const char *, const char *, const char *, Bool_t)
 
virtual void FileOpenEvent (TFile *, const char *, Double_t)
 
virtual void FileReadEvent (TFile *file, Int_t len, Double_t start)
 Record TTree file read event.
 
virtual void Finish ()
 When the run is finished this function must be called to save the current parameters in the file and Tree in this object the function is automatically called by Draw and Print.
 
virtual Long64_t GetBytesRead () const
 
virtual Long64_t GetBytesReadExtra () const
 
virtual Double_t GetCpuTime () const
 
virtual Double_t GetDiskTime () const
 
BasketList_t GetDuplicateBasketCache () const
 Return the collection of baskets which have been read by the TTreeCache more than once.
 
TGraphErrorsGetGraphIO ()
 
TGraphErrorsGetGraphTime ()
 
const char * GetHostInfo () const
 
const char * GetName () const
 Returns name of object.
 
virtual Int_t GetNleaves () const
 
virtual Long64_t GetNumEvents () const
 
TPaveTextGetPave ()
 
virtual Int_t GetReadaheadSize () const
 
virtual Int_t GetReadCalls () const
 
virtual Double_t GetRealTime () const
 
TStopwatchGetStopwatch () const
 
virtual Int_t GetTreeCacheSize () const
 
virtual Double_t GetUnzipTime () const
 
virtual TClassIsA () const
 
virtual void PacketEvent (const char *, const char *, const char *, Long64_t, Double_t, Double_t, Double_t, Long64_t)
 
virtual void Paint (Option_t *chopt="")
 Draw the TTree I/O perf graph.
 
virtual void Print (Option_t *option="") const
 Print the TTree I/O perf stats.
 
virtual void PrintBasketInfo (Option_t *option="") const
 Print the TTree basket information.
 
virtual void RateEvent (Double_t, Double_t, Long64_t, Long64_t)
 
virtual void SaveAs (const char *filename="", Option_t *option="") const
 Save this object to filename.
 
virtual void SavePrimitive (std::ostream &out, Option_t *option="")
 Save primitive as a C++ statement(s) on output stream out.
 
virtual void SetBytesRead (Long64_t nbytes)
 
virtual void SetBytesReadExtra (Long64_t nbytes)
 
virtual void SetCompress (Double_t cx)
 
virtual void SetCpuTime (Double_t cptime)
 
virtual void SetDiskTime (Double_t t)
 
virtual void SetGraphIO (TGraphErrors *gr)
 
virtual void SetGraphTime (TGraphErrors *gr)
 
virtual void SetHostInfo (const char *info)
 
virtual void SetLoaded (size_t bi, size_t basketNumber)
 
virtual void SetLoaded (TBranch *b, size_t basketNumber)
 
virtual void SetLoadedMiss (size_t bi, size_t basketNumber)
 
virtual void SetLoadedMiss (TBranch *b, size_t basketNumber)
 
virtual void SetMissed (size_t bi, size_t basketNumber)
 
virtual void SetMissed (TBranch *b, size_t basketNumber)
 
virtual void SetName (const char *name)
 
virtual void SetNleaves (Int_t nleaves)
 
virtual void SetNumEvents (Long64_t)
 
virtual void SetReadaheadSize (Int_t nbytes)
 
virtual void SetReadCalls (Int_t ncalls)
 
virtual void SetRealNorm (Double_t rnorm)
 
virtual void SetRealTime (Double_t rtime)
 
virtual void SetTreeCacheSize (Int_t nbytes)
 
virtual void SetUnzipTime (Double_t uztime)
 
virtual void SetUsed (size_t bi, size_t basketNumber)
 
virtual void SetUsed (TBranch *b, size_t basketNumber)
 
virtual void SimpleEvent (EEventType)
 
virtual void Streamer (TBuffer &)
 Stream an object of class TObject.
 
void StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
 
virtual void UnzipEvent (TObject *tree, Long64_t pos, Double_t start, Int_t complen, Int_t objlen)
 Record TTree unzip event.
 
virtual void UpdateBranchIndices (TObjArray *branchNames)
 Update the fBranchIndexCache collection to match the current TTree given the ordered list of branch names.
 
- Public Member Functions inherited from TVirtualPerfStats
virtual ~TVirtualPerfStats ()
 
TClassIsA () const override
 
void Streamer (TBuffer &) override
 Stream an object of class TObject.
 
void StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
 
- Public Member Functions inherited from TObject
 TObject ()
 TObject constructor.
 
 TObject (const TObject &object)
 TObject copy ctor.
 
virtual ~TObject ()
 TObject destructor.
 
void AbstractMethod (const char *method) const
 Use this method to implement an "abstract" method that you don't want to leave purely abstract.
 
virtual void AppendPad (Option_t *option="")
 Append graphics object to current pad.
 
ULong_t CheckedHash ()
 Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.
 
virtual const char * ClassName () const
 Returns name of class to which the object belongs.
 
virtual void Clear (Option_t *="")
 
virtual TObjectClone (const char *newname="") const
 Make a clone of an object using the Streamer facility.
 
virtual Int_t Compare (const TObject *obj) const
 Compare abstract method.
 
virtual void Copy (TObject &object) const
 Copy this to obj.
 
virtual void Delete (Option_t *option="")
 Delete this object.
 
virtual void DrawClass () const
 Draw class inheritance tree of the class to which this object belongs.
 
virtual TObjectDrawClone (Option_t *option="") const
 Draw a clone of this object in the current selected pad with: gROOT->SetSelectedPad(c1).
 
virtual void Dump () const
 Dump contents of object on stdout.
 
virtual void Error (const char *method, const char *msgfmt,...) const
 Issue error message.
 
virtual void Execute (const char *method, const char *params, Int_t *error=nullptr)
 Execute method on this object with the given parameter string, e.g.
 
virtual void Execute (TMethod *method, TObjArray *params, Int_t *error=nullptr)
 Execute method on this object with parameters stored in the TObjArray.
 
virtual void Fatal (const char *method, const char *msgfmt,...) const
 Issue fatal error message.
 
virtual TObjectFindObject (const char *name) const
 Must be redefined in derived classes.
 
virtual TObjectFindObject (const TObject *obj) const
 Must be redefined in derived classes.
 
virtual Option_tGetDrawOption () const
 Get option used by the graphics system to draw this object.
 
virtual const char * GetIconName () const
 Returns mime type name of object.
 
virtual char * GetObjectInfo (Int_t px, Int_t py) const
 Returns string containing info about the object at position (px,py).
 
virtual Option_tGetOption () const
 
virtual const char * GetTitle () const
 Returns title of object.
 
virtual UInt_t GetUniqueID () const
 Return the unique object id.
 
virtual Bool_t HandleTimer (TTimer *timer)
 Execute action in response of a timer timing out.
 
virtual ULong_t Hash () const
 Return hash value for this object.
 
Bool_t HasInconsistentHash () const
 Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.
 
virtual void Info (const char *method, const char *msgfmt,...) const
 Issue info message.
 
virtual Bool_t InheritsFrom (const char *classname) const
 Returns kTRUE if object inherits from class "classname".
 
virtual Bool_t InheritsFrom (const TClass *cl) const
 Returns kTRUE if object inherits from TClass cl.
 
virtual void Inspect () const
 Dump contents of this object in a graphics canvas.
 
void InvertBit (UInt_t f)
 
Bool_t IsDestructed () const
 IsDestructed.
 
virtual Bool_t IsEqual (const TObject *obj) const
 Default equal comparison (objects are equal if they have the same address in memory).
 
virtual Bool_t IsFolder () const
 Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).
 
R__ALWAYS_INLINE Bool_t IsOnHeap () const
 
virtual Bool_t IsSortable () const
 
R__ALWAYS_INLINE Bool_t IsZombie () const
 
virtual void ls (Option_t *option="") const
 The ls function lists the contents of a class on stdout.
 
void MayNotUse (const char *method) const
 Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary).
 
virtual Bool_t Notify ()
 This method must be overridden to handle object notification.
 
void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
 Use this method to declare a method obsolete.
 
void operator delete (void *ptr)
 Operator delete.
 
void operator delete[] (void *ptr)
 Operator delete [].
 
void * operator new (size_t sz)
 
void * operator new (size_t sz, void *vp)
 
void * operator new[] (size_t sz)
 
void * operator new[] (size_t sz, void *vp)
 
TObjectoperator= (const TObject &rhs)
 TObject assignment operator.
 
virtual void Pop ()
 Pop on object drawn in a pad to the top of the display list.
 
virtual Int_t Read (const char *name)
 Read contents of object with specified name from the current directory.
 
virtual void RecursiveRemove (TObject *obj)
 Recursively remove this object from a list.
 
void ResetBit (UInt_t f)
 
void SetBit (UInt_t f)
 
void SetBit (UInt_t f, Bool_t set)
 Set or unset the user status bits as specified in f.
 
virtual void SetDrawOption (Option_t *option="")
 Set drawing option for object.
 
virtual void SetUniqueID (UInt_t uid)
 Set the unique object id.
 
void StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
 
virtual void SysError (const char *method, const char *msgfmt,...) const
 Issue system error message.
 
R__ALWAYS_INLINE Bool_t TestBit (UInt_t f) const
 
Int_t TestBits (UInt_t f) const
 
virtual void UseCurrentStyle ()
 Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked.
 
virtual void Warning (const char *method, const char *msgfmt,...) const
 Issue warning message.
 
virtual Int_t Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0)
 Write this object to the current directory.
 
virtual Int_t Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0) const
 Write this object to the current directory.
 

Static Public Member Functions

static TClassClass ()
 
static const char * Class_Name ()
 
static constexpr Version_t Class_Version ()
 
static const char * DeclFileName ()
 
- Static Public Member Functions inherited from TVirtualPerfStats
static TClassClass ()
 
static const char * Class_Name ()
 
static constexpr Version_t Class_Version ()
 
static TVirtualPerfStats *& CurrentPerfStats ()
 Return the current ROOT perf stats if any.
 
static const char * DeclFileName ()
 
static const char * EventType (EEventType type)
 Return the name of the event type.
 
- Static Public Member Functions inherited from TObject
static TClassClass ()
 
static const char * Class_Name ()
 
static constexpr Version_t Class_Version ()
 
static const char * DeclFileName ()
 
static Longptr_t GetDtorOnly ()
 Return destructor only flag.
 
static Bool_t GetObjectStat ()
 Get status of object stat flag.
 
static void SetDtorOnly (void *obj)
 Set destructor only flag.
 
static void SetObjectStat (Bool_t stat)
 Turn on/off tracking of objects in the TObjectTable.
 

Protected Member Functions

BasketInfoGetBasketInfo (size_t bi, size_t basketNumber)
 Return the BasketInfo corresponding to the given branch and basket.
 
BasketInfoGetBasketInfo (TBranch *b, size_t basketNumber)
 Return the BasketInfo corresponding to the given branch and basket.
 
virtual void SetFile (TFile *newfile)
 
- Protected Member Functions inherited from TObject
virtual void DoError (int level, const char *location, const char *fmt, va_list va) const
 Interface to ErrorHandler (protected).
 
void MakeZombie ()
 

Protected Attributes

std::vector< std::vector< BasketInfo > > fBasketsInfo
 
std::unordered_map< TBranch *, size_t > fBranchIndexCache
 
Long64_t fBytesRead
 Number of bytes read.
 
Long64_t fBytesReadExtra
 Number of bytes (overhead) of the read-ahead cache.
 
Double_t fCompress
 Tree compression factor.
 
Double_t fCpuTime
 Cpu time.
 
Double_t fDiskTime
 Time spent in pure raw disk IO.
 
TFilefFile
 ! Pointer to the file containing the Tree
 
TGraphErrorsfGraphIO
 Pointer to the graph with IO data.
 
TGraphErrorsfGraphTime
 Pointer to the graph with timestamp info.
 
TString fHostInfo
 Name of the host system, ROOT version and date.
 
TTextfHostInfoText
 Graphics Text object with the fHostInfo data.
 
TString fName
 Name of this TTreePerfStats.
 
Int_t fNleaves
 Number of leaves in the tree.
 
TPaveTextfPave
 Pointer to annotation pavetext.
 
Int_t fReadaheadSize
 Read-ahead cache size.
 
Int_t fReadCalls
 Number of read calls.
 
Double_t fRealNorm
 Real time scale factor for fGraphTime.
 
Double_t fRealTime
 Real time.
 
TGaxisfRealTimeAxis
 Pointer to TGaxis object showing real-time.
 
TTreefTree
 ! Pointer to the Tree being monitored
 
Int_t fTreeCacheSize
 TTreeCache buffer size.
 
Long64_t fUnzipInputSize
 Compressed bytes seen by the decompressor.
 
Long64_t fUnzipObjSize
 Uncompressed bytes produced by the decompressor.
 
Double_t fUnzipTime
 Time spent uncompressing the data.
 
TStopwatchfWatch
 TStopwatch pointer.
 

Additional Inherited Members

- Protected Types inherited from TObject
enum  { kOnlyPrepStep = (1ULL << ( 3 )) }
 

#include <TTreePerfStats.h>

Inheritance diagram for TTreePerfStats:
[legend]

Member Typedef Documentation

◆ BasketList_t

using TTreePerfStats::BasketList_t = std::vector<std::pair<TBranch*, std::vector<size_t> >>

Definition at line 48 of file TTreePerfStats.h.

Constructor & Destructor Documentation

◆ TTreePerfStats() [1/2]

TTreePerfStats::TTreePerfStats ( )

default constructor (used when reading an object only)

Definition at line 107 of file TTreePerfStats.cxx.

◆ TTreePerfStats() [2/2]

TTreePerfStats::TTreePerfStats ( const char *  name,
TTree T 
)

Create a TTree I/O perf stats object.

Definition at line 138 of file TTreePerfStats.cxx.

◆ ~TTreePerfStats()

TTreePerfStats::~TTreePerfStats ( )
virtual

Destructor.

Definition at line 188 of file TTreePerfStats.cxx.

Member Function Documentation

◆ Browse()

void TTreePerfStats::Browse ( TBrowser b)
virtual

Browse.

Reimplemented from TObject.

Definition at line 208 of file TTreePerfStats.cxx.

◆ Class()

static TClass * TTreePerfStats::Class ( )
static
Returns
TClass describing this class

◆ Class_Name()

static const char * TTreePerfStats::Class_Name ( )
static
Returns
Name of this class

◆ Class_Version()

static constexpr Version_t TTreePerfStats::Class_Version ( )
inlinestaticconstexpr
Returns
Version of this class

Definition at line 157 of file TTreePerfStats.h.

◆ DeclFileName()

static const char * TTreePerfStats::DeclFileName ( )
inlinestatic
Returns
Name of the file containing the class declaration

Definition at line 157 of file TTreePerfStats.h.

◆ DistancetoPrimitive()

Int_t TTreePerfStats::DistancetoPrimitive ( Int_t  px,
Int_t  py 
)
virtual

Return distance to one of the objects in the TTreePerfStats.

Reimplemented from TObject.

Definition at line 217 of file TTreePerfStats.cxx.

◆ Draw()

void TTreePerfStats::Draw ( Option_t option = "")
virtual

Draw the TTree I/O perf graph.

by default the graph is drawn with option "al" Specify option ="ap" to show only the read blocks and not the line connecting the blocks

Reimplemented from TObject.

Definition at line 250 of file TTreePerfStats.cxx.

◆ ExecuteEvent()

void TTreePerfStats::ExecuteEvent ( Int_t  event,
Int_t  px,
Int_t  py 
)
virtual

Return distance to one of the objects in the TTreePerfStats.

Reimplemented from TObject.

Definition at line 277 of file TTreePerfStats.cxx.

◆ FileEvent()

virtual void TTreePerfStats::FileEvent ( const char *  ,
const char *  ,
const char *  ,
const char *  ,
Bool_t   
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 118 of file TTreePerfStats.h.

◆ FileOpenEvent()

virtual void TTreePerfStats::FileOpenEvent ( TFile ,
const char *  ,
Double_t   
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 119 of file TTreePerfStats.h.

◆ FileReadEvent()

void TTreePerfStats::FileReadEvent ( TFile file,
Int_t  len,
Double_t  start 
)
virtual

Record TTree file read event.

  • start is the TimeStamp before reading
  • len is the number of bytes read

Implements TVirtualPerfStats.

Definition at line 286 of file TTreePerfStats.cxx.

◆ Finish()

void TTreePerfStats::Finish ( )
virtual

When the run is finished this function must be called to save the current parameters in the file and Tree in this object the function is automatically called by Draw and Print.

Definition at line 328 of file TTreePerfStats.cxx.

◆ GetBasketInfo() [1/2]

TTreePerfStats::BasketInfo & TTreePerfStats::GetBasketInfo ( size_t  bi,
size_t  basketNumber 
)
protected

Return the BasketInfo corresponding to the given branch and basket.

Definition at line 408 of file TTreePerfStats.cxx.

◆ GetBasketInfo() [2/2]

TTreePerfStats::BasketInfo & TTreePerfStats::GetBasketInfo ( TBranch b,
size_t  basketNumber 
)
protected

Return the BasketInfo corresponding to the given branch and basket.

Definition at line 372 of file TTreePerfStats.cxx.

◆ GetBytesRead()

virtual Long64_t TTreePerfStats::GetBytesRead ( ) const
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 95 of file TTreePerfStats.h.

◆ GetBytesReadExtra()

virtual Long64_t TTreePerfStats::GetBytesReadExtra ( ) const
inlinevirtual

Definition at line 96 of file TTreePerfStats.h.

◆ GetCpuTime()

virtual Double_t TTreePerfStats::GetCpuTime ( ) const
inlinevirtual

Definition at line 97 of file TTreePerfStats.h.

◆ GetDiskTime()

virtual Double_t TTreePerfStats::GetDiskTime ( ) const
inlinevirtual

Definition at line 98 of file TTreePerfStats.h.

◆ GetDuplicateBasketCache()

TTreePerfStats::BasketList_t TTreePerfStats::GetDuplicateBasketCache ( ) const

Return the collection of baskets which have been read by the TTreeCache more than once.

Definition at line 424 of file TTreePerfStats.cxx.

◆ GetGraphIO()

TGraphErrors * TTreePerfStats::GetGraphIO ( )
inline

Definition at line 99 of file TTreePerfStats.h.

◆ GetGraphTime()

TGraphErrors * TTreePerfStats::GetGraphTime ( )
inline

Definition at line 100 of file TTreePerfStats.h.

◆ GetHostInfo()

const char * TTreePerfStats::GetHostInfo ( ) const
inline

Definition at line 101 of file TTreePerfStats.h.

◆ GetName()

const char * TTreePerfStats::GetName ( ) const
inlinevirtual

Returns name of object.

This default method returns the class name. Classes that give objects a name should override this method.

Reimplemented from TObject.

Definition at line 102 of file TTreePerfStats.h.

◆ GetNleaves()

virtual Int_t TTreePerfStats::GetNleaves ( ) const
inlinevirtual

Definition at line 103 of file TTreePerfStats.h.

◆ GetNumEvents()

virtual Long64_t TTreePerfStats::GetNumEvents ( ) const
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 104 of file TTreePerfStats.h.

◆ GetPave()

TPaveText * TTreePerfStats::GetPave ( )
inline

Definition at line 105 of file TTreePerfStats.h.

◆ GetReadaheadSize()

virtual Int_t TTreePerfStats::GetReadaheadSize ( ) const
inlinevirtual

Definition at line 106 of file TTreePerfStats.h.

◆ GetReadCalls()

virtual Int_t TTreePerfStats::GetReadCalls ( ) const
inlinevirtual

Definition at line 107 of file TTreePerfStats.h.

◆ GetRealTime()

virtual Double_t TTreePerfStats::GetRealTime ( ) const
inlinevirtual

Definition at line 108 of file TTreePerfStats.h.

◆ GetStopwatch()

TStopwatch * TTreePerfStats::GetStopwatch ( ) const
inline

Definition at line 109 of file TTreePerfStats.h.

◆ GetTreeCacheSize()

virtual Int_t TTreePerfStats::GetTreeCacheSize ( ) const
inlinevirtual

Definition at line 110 of file TTreePerfStats.h.

◆ GetUnzipTime()

virtual Double_t TTreePerfStats::GetUnzipTime ( ) const
inlinevirtual

Definition at line 111 of file TTreePerfStats.h.

◆ IsA()

virtual TClass * TTreePerfStats::IsA ( ) const
inlinevirtual
Returns
TClass describing current object

Reimplemented from TObject.

Definition at line 157 of file TTreePerfStats.h.

◆ PacketEvent()

virtual void TTreePerfStats::PacketEvent ( const char *  ,
const char *  ,
const char *  ,
Long64_t  ,
Double_t  ,
Double_t  ,
Double_t  ,
Long64_t   
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 116 of file TTreePerfStats.h.

◆ Paint()

void TTreePerfStats::Paint ( Option_t chopt = "")
virtual

Draw the TTree I/O perf graph.

Reimplemented from TObject.

Definition at line 458 of file TTreePerfStats.cxx.

◆ Print()

void TTreePerfStats::Print ( Option_t option = "") const
virtual

Print the TTree I/O perf stats.

Reimplemented from TObject.

Definition at line 540 of file TTreePerfStats.cxx.

◆ PrintBasketInfo()

void TTreePerfStats::PrintBasketInfo ( Option_t option = "") const
virtual

Print the TTree basket information.

Implements TVirtualPerfStats.

Definition at line 581 of file TTreePerfStats.cxx.

◆ RateEvent()

virtual void TTreePerfStats::RateEvent ( Double_t  ,
Double_t  ,
Long64_t  ,
Long64_t   
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 122 of file TTreePerfStats.h.

◆ SaveAs()

void TTreePerfStats::SaveAs ( const char *  filename = "",
Option_t option = "" 
) const
virtual

Save this object to filename.

Reimplemented from TObject.

Definition at line 647 of file TTreePerfStats.cxx.

◆ SavePrimitive()

void TTreePerfStats::SavePrimitive ( std::ostream &  out,
Option_t option = "" 
)
virtual

Save primitive as a C++ statement(s) on output stream out.

Reimplemented from TObject.

Definition at line 657 of file TTreePerfStats.cxx.

◆ SetBytesRead()

virtual void TTreePerfStats::SetBytesRead ( Long64_t  nbytes)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 126 of file TTreePerfStats.h.

◆ SetBytesReadExtra()

virtual void TTreePerfStats::SetBytesReadExtra ( Long64_t  nbytes)
inlinevirtual

Definition at line 127 of file TTreePerfStats.h.

◆ SetCompress()

virtual void TTreePerfStats::SetCompress ( Double_t  cx)
inlinevirtual

Definition at line 128 of file TTreePerfStats.h.

◆ SetCpuTime()

virtual void TTreePerfStats::SetCpuTime ( Double_t  cptime)
inlinevirtual

Definition at line 131 of file TTreePerfStats.h.

◆ SetDiskTime()

virtual void TTreePerfStats::SetDiskTime ( Double_t  t)
inlinevirtual

Definition at line 129 of file TTreePerfStats.h.

◆ SetFile()

virtual void TTreePerfStats::SetFile ( TFile newfile)
inlineprotectedvirtual

Implements TVirtualPerfStats.

Definition at line 82 of file TTreePerfStats.h.

◆ SetGraphIO()

virtual void TTreePerfStats::SetGraphIO ( TGraphErrors gr)
inlinevirtual

Definition at line 132 of file TTreePerfStats.h.

◆ SetGraphTime()

virtual void TTreePerfStats::SetGraphTime ( TGraphErrors gr)
inlinevirtual

Definition at line 133 of file TTreePerfStats.h.

◆ SetHostInfo()

virtual void TTreePerfStats::SetHostInfo ( const char *  info)
inlinevirtual

Definition at line 134 of file TTreePerfStats.h.

◆ SetLoaded() [1/2]

virtual void TTreePerfStats::SetLoaded ( size_t  bi,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 146 of file TTreePerfStats.h.

◆ SetLoaded() [2/2]

virtual void TTreePerfStats::SetLoaded ( TBranch b,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 145 of file TTreePerfStats.h.

◆ SetLoadedMiss() [1/2]

virtual void TTreePerfStats::SetLoadedMiss ( size_t  bi,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 148 of file TTreePerfStats.h.

◆ SetLoadedMiss() [2/2]

virtual void TTreePerfStats::SetLoadedMiss ( TBranch b,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 147 of file TTreePerfStats.h.

◆ SetMissed() [1/2]

virtual void TTreePerfStats::SetMissed ( size_t  bi,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 150 of file TTreePerfStats.h.

◆ SetMissed() [2/2]

virtual void TTreePerfStats::SetMissed ( TBranch b,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 149 of file TTreePerfStats.h.

◆ SetName()

virtual void TTreePerfStats::SetName ( const char *  name)
inlinevirtual

Definition at line 135 of file TTreePerfStats.h.

◆ SetNleaves()

virtual void TTreePerfStats::SetNleaves ( Int_t  nleaves)
inlinevirtual

Definition at line 136 of file TTreePerfStats.h.

◆ SetNumEvents()

virtual void TTreePerfStats::SetNumEvents ( Long64_t  )
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 130 of file TTreePerfStats.h.

◆ SetReadaheadSize()

virtual void TTreePerfStats::SetReadaheadSize ( Int_t  nbytes)
inlinevirtual

Definition at line 137 of file TTreePerfStats.h.

◆ SetReadCalls()

virtual void TTreePerfStats::SetReadCalls ( Int_t  ncalls)
inlinevirtual

Definition at line 138 of file TTreePerfStats.h.

◆ SetRealNorm()

virtual void TTreePerfStats::SetRealNorm ( Double_t  rnorm)
inlinevirtual

Definition at line 139 of file TTreePerfStats.h.

◆ SetRealTime()

virtual void TTreePerfStats::SetRealTime ( Double_t  rtime)
inlinevirtual

Definition at line 140 of file TTreePerfStats.h.

◆ SetTreeCacheSize()

virtual void TTreePerfStats::SetTreeCacheSize ( Int_t  nbytes)
inlinevirtual

Definition at line 141 of file TTreePerfStats.h.

◆ SetUnzipTime()

virtual void TTreePerfStats::SetUnzipTime ( Double_t  uztime)
inlinevirtual

Definition at line 142 of file TTreePerfStats.h.

◆ SetUsed() [1/2]

virtual void TTreePerfStats::SetUsed ( size_t  bi,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 152 of file TTreePerfStats.h.

◆ SetUsed() [2/2]

virtual void TTreePerfStats::SetUsed ( TBranch b,
size_t  basketNumber 
)
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 151 of file TTreePerfStats.h.

◆ SimpleEvent()

virtual void TTreePerfStats::SimpleEvent ( EEventType  )
inlinevirtual

Implements TVirtualPerfStats.

Definition at line 115 of file TTreePerfStats.h.

◆ Streamer()

virtual void TTreePerfStats::Streamer ( TBuffer R__b)
virtual

Stream an object of class TObject.

Reimplemented from TObject.

◆ StreamerNVirtual()

void TTreePerfStats::StreamerNVirtual ( TBuffer ClassDef_StreamerNVirtual_b)
inline

Definition at line 157 of file TTreePerfStats.h.

◆ UnzipEvent()

void TTreePerfStats::UnzipEvent ( TObject tree,
Long64_t  pos,
Double_t  start,
Int_t  complen,
Int_t  objlen 
)
virtual

Record TTree unzip event.

  • start is the TimeStamp before unzip
  • pos is where in the file the compressed buffer came from
  • complen is the length of the compressed buffer
  • objlen is the length of the de-compressed buffer

Implements TVirtualPerfStats.

Definition at line 312 of file TTreePerfStats.cxx.

◆ UpdateBranchIndices()

void TTreePerfStats::UpdateBranchIndices ( TObjArray branchNames)
virtual

Update the fBranchIndexCache collection to match the current TTree given the ordered list of branch names.

Implements TVirtualPerfStats.

Definition at line 360 of file TTreePerfStats.cxx.

Member Data Documentation

◆ fBasketsInfo

std::vector<std::vector<BasketInfo> > TTreePerfStats::fBasketsInfo
protected

Definition at line 77 of file TTreePerfStats.h.

◆ fBranchIndexCache

std::unordered_map<TBranch*, size_t> TTreePerfStats::fBranchIndexCache
protected

Definition at line 76 of file TTreePerfStats.h.

◆ fBytesRead

Long64_t TTreePerfStats::fBytesRead
protected

Number of bytes read.

Definition at line 55 of file TTreePerfStats.h.

◆ fBytesReadExtra

Long64_t TTreePerfStats::fBytesReadExtra
protected

Number of bytes (overhead) of the read-ahead cache.

Definition at line 56 of file TTreePerfStats.h.

◆ fCompress

Double_t TTreePerfStats::fCompress
protected

Tree compression factor.

Definition at line 64 of file TTreePerfStats.h.

◆ fCpuTime

Double_t TTreePerfStats::fCpuTime
protected

Cpu time.

Definition at line 59 of file TTreePerfStats.h.

◆ fDiskTime

Double_t TTreePerfStats::fDiskTime
protected

Time spent in pure raw disk IO.

Definition at line 60 of file TTreePerfStats.h.

◆ fFile

TFile* TTreePerfStats::fFile
protected

! Pointer to the file containing the Tree

Definition at line 67 of file TTreePerfStats.h.

◆ fGraphIO

TGraphErrors* TTreePerfStats::fGraphIO
protected

Pointer to the graph with IO data.

Definition at line 69 of file TTreePerfStats.h.

◆ fGraphTime

TGraphErrors* TTreePerfStats::fGraphTime
protected

Pointer to the graph with timestamp info.

Definition at line 70 of file TTreePerfStats.h.

◆ fHostInfo

TString TTreePerfStats::fHostInfo
protected

Name of the host system, ROOT version and date.

Definition at line 66 of file TTreePerfStats.h.

◆ fHostInfoText

TText* TTreePerfStats::fHostInfoText
protected

Graphics Text object with the fHostInfo data.

Definition at line 74 of file TTreePerfStats.h.

◆ fName

TString TTreePerfStats::fName
protected

Name of this TTreePerfStats.

Definition at line 65 of file TTreePerfStats.h.

◆ fNleaves

Int_t TTreePerfStats::fNleaves
protected

Number of leaves in the tree.

Definition at line 52 of file TTreePerfStats.h.

◆ fPave

TPaveText* TTreePerfStats::fPave
protected

Pointer to annotation pavetext.

Definition at line 71 of file TTreePerfStats.h.

◆ fReadaheadSize

Int_t TTreePerfStats::fReadaheadSize
protected

Read-ahead cache size.

Definition at line 54 of file TTreePerfStats.h.

◆ fReadCalls

Int_t TTreePerfStats::fReadCalls
protected

Number of read calls.

Definition at line 53 of file TTreePerfStats.h.

◆ fRealNorm

Double_t TTreePerfStats::fRealNorm
protected

Real time scale factor for fGraphTime.

Definition at line 57 of file TTreePerfStats.h.

◆ fRealTime

Double_t TTreePerfStats::fRealTime
protected

Real time.

Definition at line 58 of file TTreePerfStats.h.

◆ fRealTimeAxis

TGaxis* TTreePerfStats::fRealTimeAxis
protected

Pointer to TGaxis object showing real-time.

Definition at line 73 of file TTreePerfStats.h.

◆ fTree

TTree* TTreePerfStats::fTree
protected

! Pointer to the Tree being monitored

Definition at line 68 of file TTreePerfStats.h.

◆ fTreeCacheSize

Int_t TTreePerfStats::fTreeCacheSize
protected

TTreeCache buffer size.

Definition at line 51 of file TTreePerfStats.h.

◆ fUnzipInputSize

Long64_t TTreePerfStats::fUnzipInputSize
protected

Compressed bytes seen by the decompressor.

Definition at line 62 of file TTreePerfStats.h.

◆ fUnzipObjSize

Long64_t TTreePerfStats::fUnzipObjSize
protected

Uncompressed bytes produced by the decompressor.

Definition at line 63 of file TTreePerfStats.h.

◆ fUnzipTime

Double_t TTreePerfStats::fUnzipTime
protected

Time spent uncompressing the data.

Definition at line 61 of file TTreePerfStats.h.

◆ fWatch

TStopwatch* TTreePerfStats::fWatch
protected

TStopwatch pointer.

Definition at line 72 of file TTreePerfStats.h.

Libraries for TTreePerfStats:

The documentation for this class was generated from the following files: