op_config_24.h File Reference

Parameters a user may want to change. More...

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Defines
#define	OP_MOUNT   "/proc/sys/dev/oprofile/"
#define	OP_HASH_MAP_NR   4093
	nr entries in hash map.
#define	POOL_SIZE   65536
	size of string pool in bytes
#define	NR_CPUS   32
	maximum number of cpus present in the box
#define	OP_DEFAULT_BUF_SIZE   65536
	65536 * sizeof(op_sample)
#define	OP_PRE_WATERMARK(buffer_size)
	we don't try to wake-up daemon until it remains more than this free entry in eviction buffer
#define	OP_MIN_PRE_WATERMARK   8192
	minimal buffer water mark before we try to wakeup daemon
#define	OP_MAX_BUF_SIZE   1048576
	maximum number of entry in samples eviction buffer
#define	OP_MIN_BUF_SIZE   (32768 + OP_PRE_WATERMARK(32768))
	minimum number of entry in samples eviction buffer
#define	OP_DEFAULT_NOTE_SIZE   16384
	16384 * sizeof(op_note) = 273680 bytes default
#define	OP_PRE_NOTE_WATERMARK(note_size)
	we don't try to wake-up daemon until it remains more than this free entry in note buffer
#define	OP_MIN_NOTE_PRE_WATERMARK   512
	minimal note buffer water mark before we try to wakeup daemon
#define	OP_MAX_NOTE_TABLE_SIZE   1048576
	maximum number of entry in note buffer
#define	OP_MIN_NOTE_TABLE_SIZE   (1024 + OP_PRE_NOTE_WATERMARK(1024))
	minimum number of entry in note buffer
#define	OP_MAX_RTC_COUNT   4096
	maximum sampling rate when using RTC
#define	OP_MIN_RTC_COUNT   2
	minimum sampling rate when using RTC
Variables
char	op_device []
char	op_note_device []
char	op_hash_device []

---

Detailed Description

Parameters a user may want to change.

Remarks:

Copyright 2002 OProfile authors

Read the file COPYING

Author:

John Levon

Philippe Elie

---

Define Documentation

#define NR_CPUS   32

maximum number of cpus present in the box

Referenced by opd_close_image_samples_files().

#define OP_DEFAULT_BUF_SIZE   65536

65536 * sizeof(op_sample)

#define OP_DEFAULT_NOTE_SIZE   16384

16384 * sizeof(op_note) = 273680 bytes default

#define OP_HASH_MAP_NR   4093

nr entries in hash map.

This is the maximum number of name components allowed. Must be a prime number

Referenced by opd_cleanup_hash_name(), and opd_handle_mapping().

#define OP_MAX_BUF_SIZE   1048576

maximum number of entry in samples eviction buffer

Referenced by oprof_start::oprof_start().

#define OP_MAX_NOTE_TABLE_SIZE   1048576

maximum number of entry in note buffer

Referenced by oprof_start::oprof_start().

#define OP_MAX_RTC_COUNT   4096

maximum sampling rate when using RTC

#define OP_MIN_BUF_SIZE   (32768 + OP_PRE_WATERMARK(32768))

minimum number of entry in samples eviction buffer

Referenced by oprof_start::oprof_start().

#define OP_MIN_NOTE_PRE_WATERMARK   512

minimal note buffer water mark before we try to wakeup daemon

#define OP_MIN_NOTE_TABLE_SIZE   (1024 + OP_PRE_NOTE_WATERMARK(1024))

minimum number of entry in note buffer

Referenced by oprof_start::oprof_start().

#define OP_MIN_PRE_WATERMARK   8192

minimal buffer water mark before we try to wakeup daemon

#define OP_MIN_RTC_COUNT   2

minimum sampling rate when using RTC

#define OP_MOUNT   "/proc/sys/dev/oprofile/"

Referenced by opd_print_24_stats().

#define OP_PRE_NOTE_WATERMARK

(

note_size

)

Value:

(((note_size) / 32) < OP_MIN_NOTE_PRE_WATERMARK \
                ? OP_MIN_NOTE_PRE_WATERMARK             \
                : (note_size) / 32)

we don't try to wake-up daemon until it remains more than this free entry in note buffer

#define OP_PRE_WATERMARK

(

buffer_size

)

Value:

(((buffer_size) / 8) < OP_MIN_PRE_WATERMARK     \
                ? OP_MIN_PRE_WATERMARK                  \
                : (buffer_size) / 8)

we don't try to wake-up daemon until it remains more than this free entry in eviction buffer

#define POOL_SIZE   65536

size of string pool in bytes

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Variable Documentation

char op_device[]

Referenced by init_op_config_dirs().

char op_hash_device[]

Referenced by init_op_config_dirs().

char op_note_device[]

Referenced by init_op_config_dirs().