版权声明： https://blog.csdn.net/qccz123456/article/details/81982877
EMON is a low-level command-line tool that provides the ability to profile application and system performance. The tool leverages counters from hardware Performance Monitoring Units (PMUs) to collect performance monitoring events.
https://software.intel.com/en-us/download/emon-users-guide
$ emon -h
Usage:
emon [general-options] -C "event-list" [application-command-line]
event-list: events separated by ',' within the same group. Greedy
scheduling algorithm employed. User can specify where group
breaks are by using the ';' where they want the group to end.
Note that this feature is only available for Intel(R) Xeon(R)
E5 processors and later.
General Options: Information
-h [-list-event_modifiers] Display help information.
When -list-event-modifiers is used with -h, the
tool lists all the supported event modifiers
-1 [pmu type] [-experimental | -all]
[-platform-type <-platform_id>]
List the events that are available in the platform.
Can be filtered by adding a PMU type
(from -pmu-types command)
Add -experimental to additionally list all
experimental events
Add -all to list all events enabled on the platform
including th experimental and deprecated events
Add -platform-type <platform_id> to list events for
the specified target platform
-metric-list Get a list of pre-defined metrics.
Add option -detailed to list events associated with the metric
-preset-list Get a list of pre-defined preset types (presets).
-? | -H [pmu type] [-experimental | -all]
[-platform-type <-platform_id>]
Print detailed information about the events available
on the platform.
Can be filtered by adding a PMU type
(from -pmu-types command)
Add -experimental to additionally list all
experimental events
Add -all to list all events enabled on the platform
including the experimental and deprecated events
Add -platform-type <platform_id> to list events for
the specified target platform
-! <event name> Print detailed information about <event name>.
--dry-run Print the event sets that will be used during a
collection given the current list of events. --dry-run used in
conjunction with the -m flag will print out register
programming info.
-M Print the OS processor to logical/physical hardware processor
mapping.
-pmu-types [available] Displays the PMU types
enabled on the platform
Displays only available PMUs when the optional switch
"available" is used
--pl | --platform-list List supported platforms.
-v Display version information about emon and the host
platform's processor(s).
General Options: Collection
-l <loops> The number of times each event set is monitored.
Default value is 1. Event sets are interleaved. For example,
if 2 events sets A and B are specified. and time equals 4 and
loops equal 2, event set A is monitored for 4 seconds, then
event set B is monitored for 4 seconds, then event set A is
monitored for t4 seconds, and finally event set B is monitored
for 4 seconds. Furthermore a value of 0 without app specified
makes Emon run infinite loops. A value of 0 with app specified
will automatically enable -w switch. This functionality will be
automatically disabled if -t switch is set to 0.
-L <time> Range for random delay of the monitor interval.
Specified in milliseconds. A random delay of 0 to <time>
is introduced between each sample. When used, each monitor
interval is the value of the -t switch plus the random
delay between 0 and <time> milliseconds. Defaults to 0.
This functionality will be automatically disabled if -t switch
is set to 0.
-s <delay> One time delay in seconds before monitoring is started.
-p Start emon in paused state.
-t <time> Time (seconds) that an event set is monitored.
Default value is 3. A value of 0 with application specified
allows monitoring to last until the application exits. A value
of 0 without application specified makes monitoring run forever.
-w Limit loops. The number of loops is limited by the application's
execution time.
For example, if the total monitoring time specified by the time
and loop switches
is greater than the actual application execution time, the
collection is stopped after the application exits.
-osm <os-mode> Collect data for operating system processes only.
-um <user-mode> Collect data for user-mode processes only
-preset "<prest_name>" preset based collection
-metric "<metric1,metric2,...>" metric collection
General Options: Input/Output
-c Print system time (i.e. date-time) for each time interval. It
is not available in Spreadsheet Friendly mode (-X option).
-d Results are printed in formatted decimal. Formatted decimal
includes comma separators.
Formatted decimal is the default format.
-f <output file> Emon output is written to <output file>.
The -f switch creates a new output file.
-F <output file> Emon output is appended to <output file>.
If <output file> doesn't exist, it will be created.
-i <input file> Emon command line arguments are provided by
<input file>. Commented lines are indicated with a '#' at
the beginning. All text following a '#' in an input file
is ignored.
-m Print information about the register names and values used to
program the processor's event counters during the collection.
It is only available in the Standard output format - i.e. it
does not work in Quiet or Spreadsheet Friendly mode.
-n Print wall clock, user, and system time for each time interval.
It is only available in the Standard and Quiet output modes.
-q Quiet Format. The results are printed in a minimal format.
-u Results are printed in unformatted decimal. Unformatted decimal
does not include
comma separators.
-x Results are printed in hex with a leading '0x'.
-X Spreadsheet Friendly Format. The results are printed in a tab
separated format. Note that this only works for a single
group collection.
-V Spreadsheet Topology Format. The results are printed in
a ';' delimiter separated format. Note that this mode
enables multple group collection.
General Options: Miscellaneous
-pause Pause the current collection.
-resume Resume the current collection.
-stop Stop the current collection.
General Options: Telemetry
--telemetry Enable server platform telemetry sensors.
This option must be included before actions such as -1
(Requires root/Administrator access)
Examples:
Collection with one group, 3 second interval (total runtime: 3 seconds):
emon -C "CPU_CLK_UNHALTED.REF_TSC"
Collection with one group, 0.5 second interval, 5 loops
(total runtime: 2.5 seconds):
emon -l5 -t0.5 -C "CPU_CLK_UNHALTED.REF_TSC"
Collection with one group of 2 events, 0.5 second interval, 5 loops
(total runtime: 2.5 seconds):
emon -l5 -t0.5 -C "CPU_CLK_UNHALTED.REF_TSC,INST_RETIRED.ANY"
Collection with two groups, 0.5 second interval, 5 loops
(total runtime: 5 seconds):
emon -l5 -t0.5 -C "CPU_CLK_UNHALTED.REF_TSC;INST_RETIRED.ANY"
Collection with one group, running <an_app>. Data collection will
terminate when app exits:
emon -t0 -C "CPU_CLK_UNHALTED.REF_TSC,INST_RETIRED.ANY" <an_app>$ emon -pmu-types
PMU Types supported on this platform:
core
cbo
imc
edram
ncu
powerInstall
step1：Download free trial of Intel Vtune
URL: https://software.intel.com/en-us/intel-vtune-amplifier-xe
step2：Install Vtune
$ tar zxvf vtune_amplifier_xe_2018_update3.tar.gz
$ cd zxvf vtune_amplifier_xe_2018_update3
$ sh install.shStep3: check sep and emon install
$ sudo apt-get install linux-kernel-headers kernel-package gcc
$ cd /opt/intel/ vtune_amplifier_2018
$ source sep_vars.sh #加载系统环境变量
$ cd sepdk/src
$ ./build-driver #编译sep
$ ./insmod-sep #加载sep驱动
$ emon –vReference: https://www.litrin.net/2018/06/12/sepemon%E5%92%8Cedp/