Detailed Description

Definition at line 486 of file iostats.hpp.

#include <iostats.hpp>

Classes
struct	summary

Public Member Functions
	stats_data ()

	stats_data (const stats &s)

double	get_elapsed_time () const

double	get_io_wait_time () const

stats_data::summary< double >	get_pio_speed_summary () const

double	get_pio_time () const

stats_data::summary< double >	get_pread_speed_summary () const

double	get_pread_time () const

stats_data::summary< double >	get_pwrite_speed_summary () const

double	get_pwrite_time () const

external_size_type	get_read_bytes () const

stats_data::summary< external_size_type >	get_read_bytes_summary () const

unsigned	get_read_count () const

stats_data::summary< unsigned >	get_read_count_summary () const

stats_data::summary< double >	get_read_speed_summary () const

double	get_read_time () const

stats_data::summary< double >	get_read_time_summary () const

double	get_wait_read_time () const

double	get_wait_write_time () const

external_size_type	get_write_bytes () const

stats_data::summary< external_size_type >	get_write_bytes_summary () const

unsigned	get_write_count () const

stats_data::summary< unsigned >	get_write_count_summary () const

stats_data::summary< double >	get_write_speed_summary () const

double	get_write_time () const

stats_data::summary< double >	get_write_time_summary () const

size_t	num_files () const
	Returns the number of file_stats_data objects. More...

stats_data	operator+ (const stats_data &a) const

stats_data	operator- (const stats_data &a) const

void	to_ostream (std::ostream &o, const std::string line_prefix="") const

Private Member Functions
template<typename T , typename Functor >
T	fetch_sum (const Functor &get_value) const
	aggregator More...

Private Attributes
double	elapsed_

std::vector< file_stats_data >	file_stats_data_list_
	list of individual file statistics. More...

double	p_ios_

double	p_reads_
	seconds spent in parallel io More...

double	p_writes_

double	t_wait
	seconds spent waiting for completion of I/O operations More...

double	t_wait_read_

double	t_wait_write_

Friends
std::ostream &	operator<< (std::ostream &o, const stats_data &s)

Constructor & Destructor Documentation

◆ stats_data() [1/2]

stats_data ( )

inline

Definition at line 518 of file iostats.hpp.

◆ stats_data() [2/2]

stats_data ( const stats & s )

inline

Definition at line 526 of file iostats.hpp.

References file_stats::get_read_bytes(), file_stats::get_read_count(), file_stats::get_read_time(), file_stats::get_write_bytes(), file_stats::get_write_count(), and file_stats::get_write_time().

Member Function Documentation

◆ fetch_sum()

T fetch_sum ( const Functor & get_value ) const

private

aggregator

Definition at line 385 of file iostats.cpp.

References gen_data::x.

◆ get_elapsed_time()

double get_elapsed_time ( ) const

inline

Retruns elapsed_ time

Remarks: If stats_data is not the difference between two other stats_data objects, then this value is measures the time since the first file object was initialized.

Returns: elapsed_ time

Definition at line 620 of file iostats.hpp.

Referenced by scoped_print_iostats::report().

◆ get_io_wait_time()

double get_io_wait_time ( ) const

I/O wait time counter.

Returns: number of seconds spent in I/O waiting functions

Definition at line 649 of file iostats.cpp.

◆ get_pio_speed_summary()

stats_data::summary< double > get_pio_speed_summary ( ) const

Definition at line 640 of file iostats.cpp.

References stats::p_ios_.

◆ get_pio_time()

double get_pio_time ( ) const

Period of time when at least one I/O thread was executing a read or a write.

Returns: seconds spent in I/O

Definition at line 599 of file iostats.cpp.

References stats::p_ios_.

◆ get_pread_speed_summary()

stats_data::summary< double > get_pread_speed_summary ( ) const

Definition at line 613 of file iostats.cpp.

References stats::p_reads_.

◆ get_pread_time()

double get_pread_time ( ) const

Period of time when at least one I/O thread was executing a read.

Returns: seconds spent in reading

Definition at line 589 of file iostats.cpp.

References stats::p_reads_.

◆ get_pwrite_speed_summary()

stats_data::summary< double > get_pwrite_speed_summary ( ) const

Definition at line 631 of file iostats.cpp.

References stats::p_writes_.

◆ get_pwrite_time()

double get_pwrite_time ( ) const

Period of time when at least one I/O thread was executing a write.

Returns: seconds spent in writing

Definition at line 594 of file iostats.cpp.

References stats::p_writes_.

◆ get_read_bytes()

external_size_type get_read_bytes ( ) const

Returns number of bytes read from disks in total.

Returns: number of bytes read

Definition at line 527 of file iostats.cpp.

Referenced by Context::Launch(), and BlockPool::RunTask().

◆ get_read_bytes_summary()

stats_data::summary< external_size_type > get_read_bytes_summary ( ) const

Returns sum, min, max, avarage and median of all read bytes.

Returns: a summary of the write measurements

Definition at line 534 of file iostats.cpp.

◆ get_read_count()

unsigned get_read_count ( ) const

Returns the sum of all read_count_.

Returns: the sum of all read_count_

Definition at line 497 of file iostats.cpp.

Referenced by BlockPool::RunTask().

◆ get_read_count_summary()

stats_data::summary< unsigned > get_read_count_summary ( ) const

Retruns sum, min, max, avarage and median of all read_count_.

Returns: a summary of the read measurements

Definition at line 503 of file iostats.cpp.

◆ get_read_speed_summary()

stats_data::summary< double > get_read_speed_summary ( ) const

Definition at line 604 of file iostats.cpp.

◆ get_read_time()

double get_read_time ( ) const

Time that would be spent in read syscalls if all parallel read_count_ were serialized.

Returns: seconds spent in reading

Definition at line 559 of file iostats.cpp.

◆ get_read_time_summary()

stats_data::summary< double > get_read_time_summary ( ) const

Returns sum, min, max, avarage and median of all read times

Returns: a summary of the read times

Definition at line 565 of file iostats.cpp.

◆ get_wait_read_time()

double get_wait_read_time ( ) const

Definition at line 654 of file iostats.cpp.

References stats::t_wait_read_.

◆ get_wait_write_time()

double get_wait_write_time ( ) const

Definition at line 659 of file iostats.cpp.

References stats::t_wait_write_.

◆ get_write_bytes()

external_size_type get_write_bytes ( ) const

Returns number of bytes written to the disks in total.

Returns: number of bytes written

Definition at line 543 of file iostats.cpp.

Referenced by Context::Launch(), and BlockPool::RunTask().

◆ get_write_bytes_summary()

stats_data::summary< external_size_type > get_write_bytes_summary ( ) const

Returns sum, min, max, avarage and median of all written bytes.

Returns: a summary of the written bytes

Definition at line 550 of file iostats.cpp.

◆ get_write_count()

unsigned get_write_count ( ) const

Returns the sum of all write_count_.

Returns: the sum of all write_count_

Definition at line 512 of file iostats.cpp.

Referenced by BlockPool::RunTask().

◆ get_write_count_summary()

stats_data::summary< unsigned > get_write_count_summary ( ) const

Returns sum, min, max, avarage and median of all write_count_.

Returns: a summary of the write measurements

Definition at line 518 of file iostats.cpp.

◆ get_write_speed_summary()

stats_data::summary< double > get_write_speed_summary ( ) const

Definition at line 622 of file iostats.cpp.

◆ get_write_time()

double get_write_time ( ) const

Time that would be spent in write syscalls if all parallel write_count_ were serialized.

Returns: the sum of the write times of all files

Definition at line 574 of file iostats.cpp.

◆ get_write_time_summary()

stats_data::summary< double > get_write_time_summary ( ) const

Returns sum, min, max, avarage and median of all write times

Returns: a summary of the write times

Definition at line 580 of file iostats.cpp.

◆ num_files()

size_t num_files ( ) const

Returns the number of file_stats_data objects.

Definition at line 492 of file iostats.cpp.

◆ operator+()

stats_data operator+ ( const stats_data & a ) const

Definition at line 444 of file iostats.cpp.

References stats_data::elapsed_, stats_data::file_stats_data_list_, tlx::merge_combine(), stats::p_ios_, stats_data::p_ios_, stats::p_reads_, stats_data::p_reads_, stats::p_writes_, stats_data::p_writes_, stats_data::t_wait, stats::t_wait_read_, stats_data::t_wait_read_, stats::t_wait_write_, and stats_data::t_wait_write_.

◆ operator-()

stats_data operator- ( const stats_data & a ) const

Definition at line 468 of file iostats.cpp.

References stats_data::elapsed_, stats_data::file_stats_data_list_, tlx::merge_combine(), stats::p_ios_, stats_data::p_ios_, stats::p_reads_, stats_data::p_reads_, stats::p_writes_, stats_data::p_writes_, stats_data::t_wait, stats::t_wait_read_, stats_data::t_wait_read_, stats::t_wait_write_, and stats_data::t_wait_write_.

◆ to_ostream()

void to_ostream	(	std::ostream &	o,
		const std::string	line_prefix = `""`
	)		const

Definition at line 664 of file iostats.cpp.

References foxxll::add_IEC_binary_multiplier(), stats::get_io_wait_time(), stats::get_pio_time(), stats::get_pread_time(), stats::get_pwrite_time(), stats::get_wait_read_time(), and stats::get_wait_write_time().

Friends And Related Function Documentation

◆ operator<<

std::ostream& operator<<	(	std::ostream &	o,
		const stats_data &	s
	)

friend

Definition at line 635 of file iostats.hpp.

Member Data Documentation

◆ elapsed_

double elapsed_

private

Definition at line 495 of file iostats.hpp.

Referenced by stats_data::operator+(), and stats_data::operator-().

◆ file_stats_data_list_

std::vector<file_stats_data> file_stats_data_list_

private

list of individual file statistics.

Definition at line 498 of file iostats.hpp.

Referenced by stats_data::operator+(), and stats_data::operator-().

◆ p_ios_

double p_ios_

private

Definition at line 489 of file iostats.hpp.

Referenced by stats_data::operator+(), and stats_data::operator-().

◆ p_reads_

double p_reads_

private

seconds spent in parallel io

Definition at line 489 of file iostats.hpp.

Referenced by stats_data::operator+(), and stats_data::operator-().

◆ p_writes_

double p_writes_

private

Definition at line 489 of file iostats.hpp.

Referenced by stats_data::operator+(), and stats_data::operator-().

◆ t_wait

double t_wait

private

seconds spent waiting for completion of I/O operations

Definition at line 492 of file iostats.hpp.

Referenced by stats_data::operator+(), and stats_data::operator-().

◆ t_wait_read_

double t_wait_read_

private

Definition at line 493 of file iostats.hpp.

Referenced by stats_data::operator+(), and stats_data::operator-().

◆ t_wait_write_

double t_wait_write_

private

Definition at line 493 of file iostats.hpp.

Referenced by stats_data::operator+(), and stats_data::operator-().

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

extlib/foxxll/foxxll/io/iostats.hpp
extlib/foxxll/foxxll/io/iostats.cpp

Detailed Description

Classes

Public Member Functions

Private Member Functions

Private Attributes

Friends

Constructor & Destructor Documentation

◆ stats_data() [1/2]

◆ stats_data() [2/2]

Member Function Documentation

◆ fetch_sum()

◆ get_elapsed_time()

◆ get_io_wait_time()

◆ get_pio_speed_summary()

◆ get_pio_time()

◆ get_pread_speed_summary()

◆ get_pread_time()

◆ get_pwrite_speed_summary()

◆ get_pwrite_time()

◆ get_read_bytes()

◆ get_read_bytes_summary()

◆ get_read_count()

◆ get_read_count_summary()

◆ get_read_speed_summary()

◆ get_read_time()

◆ get_read_time_summary()

◆ get_wait_read_time()

◆ get_wait_write_time()

◆ get_write_bytes()

◆ get_write_bytes_summary()

◆ get_write_count()

◆ get_write_count_summary()

◆ get_write_speed_summary()

◆ get_write_time()

◆ get_write_time_summary()

◆ num_files()

◆ operator+()

◆ operator-()

◆ to_ostream()

Friends And Related Function Documentation

◆ operator<<

Member Data Documentation

◆ elapsed_

◆ file_stats_data_list_

◆ p_ios_

◆ p_reads_

◆ p_writes_

◆ t_wait

◆ t_wait_read_

◆ t_wait_write_