#include <perf-counters.h>

Collaboration diagram for impala::PerfCounters:

Classes
struct	CounterData

Public Member Functions
bool	AddDefaultCounters ()

bool	AddCounter (Counter)

void	Snapshot (const std::string &name="")

const std::vector< int64_t > *	counters (int snapshot) const
	Returns the results of that snapshot. More...

const std::vector< std::string > *	counter_names () const
	Returns readable names for the added counters. More...

void	PrettyPrint (std::ostream *out) const
	Prints out the names and results for all snapshots to 'out'. More...

	PerfCounters ()

	~PerfCounters ()

Private Types
enum	DataSource { SYS_PERF_COUNTER, PROC_SELF_IO, PROC_SELF_STATUS }

Private Member Functions
	PerfCounters (const PerfCounters &)
	Copy constructor and assignment not allowed. More...

PerfCounters &	operator= (const PerfCounters &)

bool	InitSysCounter (Counter counter)

bool	InitProcSelfIOCounter (Counter counter)

bool	InitProcSelfStatusCounter (Counter counter)

bool	GetSysCounters (std::vector< int64_t > &snapshot)

bool	GetProcSelfIOCounters (std::vector< int64_t > &snapshot)

bool	GetProcSelfStatusCounters (std::vector< int64_t > &snapshot)

Private Attributes
std::vector< CounterData >	counters_

std::vector< std::string >	counter_names_

std::vector< std::string >	snapshot_names_

std::vector< std::vector < int64_t > >	snapshots_

int	group_fd_

Detailed Description

Definition at line 43 of file perf-counters.h.

Member Enumeration Documentation

enum impala::PerfCounters::Counter

Enumerator
PERF_COUNTER_SW_CPU_CLOCK
PERF_COUNTER_SW_PAGE_FAULTS
PERF_COUNTER_SW_CONTEXT_SWITCHES
PERF_COUNTER_SW_CPU_MIGRATIONS
PERF_COUNTER_HW_CPU_CYCLES
PERF_COUNTER_HW_INSTRUCTIONS
PERF_COUNTER_HW_CACHE_HIT
PERF_COUNTER_HW_CACHE_MISSES
PERF_COUNTER_HW_BRANCHES
PERF_COUNTER_HW_BRANCH_MISSES
PERF_COUNTER_HW_BUS_CYCLES
PERF_COUNTER_VM_USAGE
PERF_COUNTER_VM_PEAK_USAGE
PERF_COUNTER_RESIDENT_SET_SIZE
PERF_COUNTER_BYTES_READ
PERF_COUNTER_BYTES_WRITE
PERF_COUNTER_DISK_READ
PERF_COUNTER_DISK_WRITE

Definition at line 45 of file perf-counters.h.

enum impala::PerfCounters::DataSource

private

Enumerator
SYS_PERF_COUNTER
PROC_SELF_IO
PROC_SELF_STATUS

Definition at line 107 of file perf-counters.h.

Constructor & Destructor Documentation

impala::PerfCounters::PerfCounters ( )

Definition at line 309 of file perf-counters.cc.

impala::PerfCounters::~PerfCounters ( )

Definition at line 313 of file perf-counters.cc.

References counters_, and SYS_PERF_COUNTER.

impala::PerfCounters::PerfCounters ( const PerfCounters & )

private

Copy constructor and assignment not allowed.

Member Function Documentation

bool impala::PerfCounters::AddCounter ( Counter counter )

Add a specific counter to watch. Return false if that counter is not available. Counters cannot be added after a snapshot has been taken.

Definition at line 340 of file perf-counters.cc.

References counter_names_, counters_, impala::GetCounterName(), InitProcSelfIOCounter(), InitProcSelfStatusCounter(), InitSysCounter(), PERF_COUNTER_BYTES_READ, PERF_COUNTER_BYTES_WRITE, PERF_COUNTER_DISK_READ, PERF_COUNTER_DISK_WRITE, PERF_COUNTER_HW_BRANCH_MISSES, PERF_COUNTER_HW_BRANCHES, PERF_COUNTER_HW_BUS_CYCLES, PERF_COUNTER_HW_CACHE_HIT, PERF_COUNTER_HW_CACHE_MISSES, PERF_COUNTER_HW_CPU_CYCLES, PERF_COUNTER_HW_INSTRUCTIONS, PERF_COUNTER_RESIDENT_SET_SIZE, PERF_COUNTER_SW_CONTEXT_SWITCHES, PERF_COUNTER_SW_CPU_CLOCK, PERF_COUNTER_SW_CPU_MIGRATIONS, PERF_COUNTER_SW_PAGE_FAULTS, PERF_COUNTER_VM_PEAK_USAGE, and PERF_COUNTER_VM_USAGE.

Referenced by AddDefaultCounters().

bool impala::PerfCounters::AddDefaultCounters ( )

Add the 'default' counters as ones to collect. Returns false if any of those counters are not available. Counters cannot be added after a snapshot has been taken.

Definition at line 322 of file perf-counters.cc.

References AddCounter(), PERF_COUNTER_DISK_READ, PERF_COUNTER_RESIDENT_SET_SIZE, PERF_COUNTER_SW_CPU_CLOCK, PERF_COUNTER_VM_PEAK_USAGE, and PERF_COUNTER_VM_USAGE.

Referenced by impala::TEST().

const std::vector<std::string>* impala::PerfCounters::counter_names ( ) const

inline

Returns readable names for the added counters.

Definition at line 86 of file perf-counters.h.

References counter_names_.

const vector< int64_t > * impala::PerfCounters::counters ( int snapshot ) const

Returns the results of that snapshot.

Definition at line 403 of file perf-counters.cc.

References snapshots_.

bool impala::PerfCounters::GetProcSelfIOCounters ( std::vector< int64_t > & snapshot )

private

Definition at line 261 of file perf-counters.cc.

References impala::colon, counters_, impala::PROC_IO_LAST_COUNTER, and PROC_SELF_IO.

Referenced by Snapshot().

bool impala::PerfCounters::GetProcSelfStatusCounters ( std::vector< int64_t > & snapshot )

private

Definition at line 286 of file perf-counters.cc.

References impala::colon, counters_, and PROC_SELF_STATUS.

Referenced by Snapshot().

bool impala::PerfCounters::GetSysCounters ( std::vector< int64_t > & snapshot )

private

Definition at line 238 of file perf-counters.cc.

References COUNTER_SIZE, counters_, and SYS_PERF_COUNTER.

Referenced by Snapshot().

bool impala::PerfCounters::InitProcSelfIOCounter ( Counter counter )

private

Definition at line 189 of file perf-counters.cc.

References impala::PerfCounters::CounterData::counter, counters_, PERF_COUNTER_BYTES_READ, PERF_COUNTER_BYTES_WRITE, PERF_COUNTER_DISK_READ, PERF_COUNTER_DISK_WRITE, impala::PROC_IO_DISK_READ, impala::PROC_IO_DISK_WRITE, impala::PerfCounters::CounterData::proc_io_line_number, impala::PROC_IO_READ, impala::PROC_IO_WRITE, PROC_SELF_IO, and impala::PerfCounters::CounterData::source.

Referenced by AddCounter().

bool impala::PerfCounters::InitProcSelfStatusCounter ( Counter counter )

private

Definition at line 215 of file perf-counters.cc.

References impala::PerfCounters::CounterData::counter, counters_, PERF_COUNTER_RESIDENT_SET_SIZE, PERF_COUNTER_VM_PEAK_USAGE, PERF_COUNTER_VM_USAGE, PROC_SELF_STATUS, impala::PerfCounters::CounterData::proc_status_field, and impala::PerfCounters::CounterData::source.

Referenced by AddCounter().

bool impala::PerfCounters::InitSysCounter ( Counter counter )

private

Definition at line 162 of file perf-counters.cc.

References impala::PerfCounters::CounterData::counter, counters_, impala::PerfCounters::CounterData::fd, group_fd_, impala::InitEventAttr(), PERF_COUNTER_SW_CPU_CLOCK, impala::PerfCounters::CounterData::source, SYS_PERF_COUNTER, and impala::sys_perf_event_open().

Referenced by AddCounter().

PerfCounters& impala::PerfCounters::operator= ( const PerfCounters & )

private

void impala::PerfCounters::PrettyPrint ( std::ostream * out ) const

Prints out the names and results for all snapshots to 'out'.

Definition at line 408 of file perf-counters.cc.

References counter_names_, counters_, PRETTY_PRINT_WIDTH, impala::PrettyPrinter::Print(), snapshot_names_, and snapshots_.

Referenced by impala::TEST().

void impala::PerfCounters::Snapshot ( const std::string & name = "" )

Take a snapshot of all the counters and store it. The caller can specify a name for the snapshot.

Definition at line 381 of file perf-counters.cc.

References counters_, GetProcSelfIOCounters(), GetProcSelfStatusCounters(), GetSysCounters(), impala::name, snapshot_names_, and snapshots_.

Referenced by impala::TEST().

Member Data Documentation

std::vector<std::string> impala::PerfCounters::counter_names_

private

Definition at line 130 of file perf-counters.h.

Referenced by AddCounter(), counter_names(), and PrettyPrint().

std::vector<CounterData> impala::PerfCounters::counters_

private

Definition at line 129 of file perf-counters.h.

Referenced by AddCounter(), GetProcSelfIOCounters(), GetProcSelfStatusCounters(), GetSysCounters(), InitProcSelfIOCounter(), InitProcSelfStatusCounter(), InitSysCounter(), PrettyPrint(), Snapshot(), and ~PerfCounters().

int impala::PerfCounters::group_fd_

private

System perf counters can be grouped together. The OS will update all grouped counters at the same time. This is useful to better correlate counter values.

Definition at line 135 of file perf-counters.h.

Referenced by InitSysCounter().

std::vector<std::string> impala::PerfCounters::snapshot_names_

private

Definition at line 131 of file perf-counters.h.

Referenced by PrettyPrint(), and Snapshot().

std::vector<std::vector<int64_t> > impala::PerfCounters::snapshots_

private

Definition at line 132 of file perf-counters.h.

Referenced by counters(), PrettyPrint(), and Snapshot().

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

be/src/util/perf-counters.h
be/src/util/perf-counters.cc

Public Types
enum	Counter { PERF_COUNTER_SW_CPU_CLOCK, PERF_COUNTER_SW_PAGE_FAULTS, PERF_COUNTER_SW_CONTEXT_SWITCHES, PERF_COUNTER_SW_CPU_MIGRATIONS, PERF_COUNTER_HW_CPU_CYCLES, PERF_COUNTER_HW_INSTRUCTIONS, PERF_COUNTER_HW_CACHE_HIT, PERF_COUNTER_HW_CACHE_MISSES, PERF_COUNTER_HW_BRANCHES, PERF_COUNTER_HW_BRANCH_MISSES, PERF_COUNTER_HW_BUS_CYCLES, PERF_COUNTER_VM_USAGE, PERF_COUNTER_VM_PEAK_USAGE, PERF_COUNTER_RESIDENT_SET_SIZE, PERF_COUNTER_BYTES_READ, PERF_COUNTER_BYTES_WRITE, PERF_COUNTER_DISK_READ, PERF_COUNTER_DISK_WRITE }

Classes

Public Types

Public Member Functions

Private Types

Private Member Functions

Private Attributes

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation