mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
5484f03344
general: - add battery charge data before and after test - remove special s0i3 handling - remove melding of dmesg & ftrace data in old kernels, use one only - updates to various kprobes in trace (ksys_sync, etc) - enable pm_debug_messages during the test - instrument more subsystems with dev functions (phy0) error handling: - return codes for tool show the status of the test run - 0: success, 1: general error (no timeline), 2: fail (suspend aborted) - monitor output of /sys/power/state, mark as failure if exception occurs - add signal handler when using -result to catch tool exceptions display control - add -x commands for testing xset with mode settings and status - allow display setting to on, off, suspend, standby - add display mode change info to the log, along with a warning on fail s2idle (freeze) - remove fixed 10-phase dependency, allow any phase order & any count - multiple phase occurences show as phase_nameN e.g. suspend_noirq3 - if multiple freezes occur, print multiple time values in header summary: - add new columns to summary output: issues, worst suspend/resume devices - worst device: includes summation of all phases of suspend or resume - issues: includes WARNING/ERROR/BUG from dmesg log, and other issues - s2idle: multiple freezes show as FREEZExN in the issues column Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
300 lines
9.8 KiB
Groff
300 lines
9.8 KiB
Groff
.TH SLEEPGRAPH 8
|
|
.SH NAME
|
|
sleepgraph \- Suspend/Resume timing analysis
|
|
.SH SYNOPSIS
|
|
.ft B
|
|
.B sleepgraph
|
|
.RB [ OPTIONS ]
|
|
.RB [ COMMAND ]
|
|
.SH DESCRIPTION
|
|
\fBsleepgraph \fP is designed to assist kernel and OS developers
|
|
in optimizing their linux stack's suspend/resume time. Using a kernel
|
|
image built with a few extra options enabled, the tool will execute a
|
|
suspend and capture dmesg and ftrace data until resume is complete.
|
|
This data is transformed into a device timeline and an optional
|
|
callgraph to give a detailed view of which devices/subsystems are
|
|
taking the most time in suspend/resume.
|
|
.PP
|
|
If no specific command is given, the default behavior is to initiate
|
|
a suspend/resume.
|
|
.PP
|
|
Generates output files in subdirectory: suspend-yymmdd-HHMMSS
|
|
html timeline : <hostname>_<mode>.html
|
|
raw dmesg file : <hostname>_<mode>_dmesg.txt
|
|
raw ftrace file : <hostname>_<mode>_ftrace.txt
|
|
.SH OPTIONS
|
|
.TP
|
|
\fB-h\fR
|
|
Print the help text.
|
|
.TP
|
|
\fB-v\fR
|
|
Print the current tool version.
|
|
.TP
|
|
\fB-verbose\fR
|
|
Print extra information during execution and analysis.
|
|
.TP
|
|
\fB-config \fIfile\fR
|
|
Pull arguments and config options from a file.
|
|
.TP
|
|
\fB-m \fImode\fR
|
|
Mode to initiate for suspend e.g. standby, freeze, mem (default: mem).
|
|
.TP
|
|
\fB-o \fIname\fR
|
|
Overrides the output subdirectory name when running a new test.
|
|
Use {date}, {time}, {hostname} for current values.
|
|
.sp
|
|
e.g. suspend-{hostname}-{date}-{time}
|
|
.TP
|
|
\fB-rtcwake \fIt\fR | off
|
|
Use rtcwake to autoresume after \fIt\fR seconds (default: 15). Set t to "off" to
|
|
disable rtcwake and require a user keypress to resume.
|
|
.TP
|
|
\fB-addlogs\fR
|
|
Add the dmesg and ftrace logs to the html output. They will be viewable by
|
|
clicking buttons in the timeline.
|
|
.TP
|
|
\fB-result \fIfile\fR
|
|
Export a results table to a text file for parsing.
|
|
.TP
|
|
\fB-sync\fR
|
|
Sync the filesystems before starting the test. This reduces the size of
|
|
the sys_sync call which happens in the suspend_prepare phase.
|
|
.TP
|
|
\fB-rs \fIenable/disable\fR
|
|
During test, enable/disable runtime suspend for all devices. The test is delayed
|
|
by 5 seconds to allow runtime suspend changes to occur. The settings are restored
|
|
after the test is complete.
|
|
.TP
|
|
\fB-display \fIon/off/standby/suspend\fR
|
|
Switch the display to the requested mode for the test using the xset command.
|
|
This helps maintain the consistency of test data for better comparison.
|
|
.TP
|
|
\fB-skiphtml\fR
|
|
Run the test and capture the trace logs, but skip the timeline generation.
|
|
|
|
.SS "advanced"
|
|
.TP
|
|
\fB-gzip\fR
|
|
Gzip the trace and dmesg logs to save space. The tool can also read in gzipped
|
|
logs for processing.
|
|
.TP
|
|
\fB-cmd \fIstr\fR
|
|
Run the timeline over a custom suspend command, e.g. pm-suspend. By default
|
|
the tool forces suspend via /sys/power/state so this allows testing over
|
|
an OS's official suspend method. The output file will change to
|
|
hostname_command.html and will autodetect which suspend mode was triggered.
|
|
.TP
|
|
\fB-filter \fI"d1,d2,..."\fR
|
|
Filter out all but these device callbacks. These strings can be device names
|
|
or module names. e.g. 0000:00:02.0, ata5, i915, usb, etc.
|
|
.TP
|
|
\fB-mindev \fIt\fR
|
|
Discard all device callbacks shorter than \fIt\fR milliseconds (default: 0.0).
|
|
This reduces the html file size as there can be many tiny callbacks which are barely
|
|
visible. The value is a float: e.g. 0.001 represents 1 us.
|
|
.TP
|
|
\fB-proc\fR
|
|
Add usermode process info into the timeline (default: disabled).
|
|
.TP
|
|
\fB-dev\fR
|
|
Add kernel source calls and threads to the timeline (default: disabled).
|
|
.TP
|
|
\fB-x2\fR
|
|
Run two suspend/resumes back to back (default: disabled).
|
|
.TP
|
|
\fB-x2delay \fIt\fR
|
|
Include \fIt\fR ms delay between multiple test runs (default: 0 ms).
|
|
.TP
|
|
\fB-predelay \fIt\fR
|
|
Include \fIt\fR ms delay before 1st suspend (default: 0 ms).
|
|
.TP
|
|
\fB-postdelay \fIt\fR
|
|
Include \fIt\fR ms delay after last resume (default: 0 ms).
|
|
.TP
|
|
\fB-multi \fIn d\fR
|
|
Execute \fIn\fR consecutive tests at \fId\fR seconds intervals. The outputs will
|
|
be created in a new subdirectory with a summary page: suspend-xN-{date}-{time}.
|
|
|
|
.SS "ftrace debug"
|
|
.TP
|
|
\fB-f\fR
|
|
Use ftrace to create device callgraphs (default: disabled). This can produce
|
|
very large outputs, i.e. 10MB - 100MB.
|
|
.TP
|
|
\fB-maxdepth \fIlevel\fR
|
|
limit the callgraph trace depth to \fIlevel\fR (default: 0=all). This is
|
|
the best way to limit the output size when using callgraphs via -f.
|
|
.TP
|
|
\fB-expandcg\fR
|
|
pre-expand the callgraph data in the html output (default: disabled)
|
|
.TP
|
|
\fB-fadd \fIfile\fR
|
|
Add functions to be graphed in the timeline from a list in a text file
|
|
.TP
|
|
\fB-mincg \fIt\fR
|
|
Discard all callgraphs shorter than \fIt\fR milliseconds (default: 0.0).
|
|
This reduces the html file size as there can be many tiny callgraphs
|
|
which are barely visible in the timeline.
|
|
The value is a float: e.g. 0.001 represents 1 us.
|
|
.TP
|
|
\fB-cgfilter \fI"func1,func2,..."\fR
|
|
Reduce callgraph output in the timeline by limiting it to a list of calls. The
|
|
argument can be a single function name or a comma delimited list.
|
|
(default: none)
|
|
.TP
|
|
\fB-cgskip \fIfile\fR
|
|
Reduce callgraph timeline size by skipping over uninteresting functions
|
|
in the trace, e.g. printk or console_unlock. The functions listed
|
|
in this file will show up as empty leaves in the callgraph with only the start/end
|
|
times displayed. cgskip.txt is used automatically if found in the path, so
|
|
use "off" to disable completely (default: cgskip.txt)
|
|
.TP
|
|
\fB-cgphase \fIp\fR
|
|
Only show callgraph data for phase \fIp\fR (e.g. suspend_late).
|
|
.TP
|
|
\fB-cgtest \fIn\fR
|
|
In an x2 run, only show callgraph data for test \fIn\fR (e.g. 0 or 1).
|
|
.TP
|
|
\fB-timeprec \fIn\fR
|
|
Number of significant digits in timestamps (0:S, [3:ms], 6:us).
|
|
.TP
|
|
\fB-bufsize \fIN\fR
|
|
Set trace buffer size to N kilo-bytes (default: all of free memory up to 3GB)
|
|
|
|
.SH COMMANDS
|
|
.TP
|
|
\fB-summary \fIindir\fR
|
|
Create a summary page of all tests in \fIindir\fR. Creates summary.html
|
|
in the current folder. The output page is a table of tests with
|
|
suspend and resume values sorted by suspend mode, host, and kernel.
|
|
Includes test averages by mode and links to the test html files.
|
|
Use -genhtml to include tests with missing html.
|
|
.TP
|
|
\fB-modes\fR
|
|
List available suspend modes.
|
|
.TP
|
|
\fB-status\fR
|
|
Test to see if the system is able to run this tool. Use this along
|
|
with any options you intend to use to see if they will work.
|
|
.TP
|
|
\fB-fpdt\fR
|
|
Print out the contents of the ACPI Firmware Performance Data Table.
|
|
.TP
|
|
\fB-battery\fR
|
|
Print out battery status and current charge.
|
|
.TP
|
|
\fB-xon/-xoff/-xstandby/-xsuspend\fR
|
|
Test xset by attempting to switch the display to the given mode. This
|
|
is the same command which will be issued by \fB-display \fImode\fR.
|
|
.TP
|
|
\fB-xstat\fR
|
|
Get the current DPMS display mode.
|
|
.TP
|
|
\fB-sysinfo\fR
|
|
Print out system info extracted from BIOS. Reads /dev/mem directly instead of going through dmidecode.
|
|
.TP
|
|
\fB-devinfo\fR
|
|
Print out the pm settings of all devices which support runtime suspend.
|
|
.TP
|
|
\fB-flist\fR
|
|
Print the list of ftrace functions currently being captured. Functions
|
|
that are not available as symbols in the current kernel are shown in red.
|
|
By default, the tool traces a list of important suspend/resume functions
|
|
in order to better fill out the timeline. If the user has added their own
|
|
with -fadd they will also be checked.
|
|
.TP
|
|
\fB-flistall\fR
|
|
Print all ftrace functions capable of being captured. These are all the
|
|
possible values you can add to trace via the -fadd argument.
|
|
.SS "rebuild"
|
|
.TP
|
|
\fB-ftrace \fIfile\fR
|
|
Create HTML output from an existing ftrace file.
|
|
.TP
|
|
\fB-dmesg \fIfile\fR
|
|
Create HTML output from an existing dmesg file.
|
|
|
|
.SH EXAMPLES
|
|
.SS "simple commands"
|
|
Check which suspend modes are currently supported.
|
|
.IP
|
|
\f(CW$ sleepgraph -modes\fR
|
|
.PP
|
|
Read the Firmware Performance Data Table (FPDT)
|
|
.IP
|
|
\f(CW$ sudo sleepgraph -fpdt\fR
|
|
.PP
|
|
Print out the current USB power topology
|
|
.IP
|
|
\f(CW$ sleepgraph -usbtopo
|
|
.PP
|
|
Verify that you can run a command with a set of arguments
|
|
.IP
|
|
\f(CW$ sudo sleepgraph -f -rtcwake 30 -status
|
|
.PP
|
|
Generate a summary of all timelines in a particular folder.
|
|
.IP
|
|
\f(CW$ sleepgraph -summary ~/workspace/myresults/\fR
|
|
.PP
|
|
|
|
.SS "capturing basic timelines"
|
|
Execute a mem suspend with a 15 second wakeup. Include the logs in the html.
|
|
.IP
|
|
\f(CW$ sudo sleepgraph -rtcwake 15 -addlogs\fR
|
|
.PP
|
|
Execute a standby with a 15 second wakeup. Change the output folder name.
|
|
.IP
|
|
\f(CW$ sudo sleepgraph -m standby -rtcwake 15 -o "standby-{host}-{date}-{time}"\fR
|
|
.PP
|
|
Execute a freeze with no wakeup (require keypress). Change output folder name.
|
|
.IP
|
|
\f(CW$ sudo sleepgraph -m freeze -rtcwake off -o "freeze-{hostname}-{date}-{time}"\fR
|
|
.PP
|
|
|
|
.SS "capturing advanced timelines"
|
|
Execute a suspend & include dev mode source calls, limit callbacks to 5ms or larger.
|
|
.IP
|
|
\f(CW$ sudo sleepgraph -m mem -rtcwake 15 -dev -mindev 5\fR
|
|
.PP
|
|
Run two suspends back to back, include a 500ms delay before, after, and in between runs.
|
|
.IP
|
|
\f(CW$ sudo sleepgraph -m mem -rtcwake 15 -x2 -predelay 500 -x2delay 500 -postdelay 500\fR
|
|
.PP
|
|
Do a batch run of 10 freezes with 30 seconds delay between runs.
|
|
.IP
|
|
\f(CW$ sudo sleepgraph -m freeze -rtcwake 15 -multi 10 30\fR
|
|
.PP
|
|
Execute a suspend using a custom command.
|
|
.IP
|
|
\f(CW$ sudo sleepgraph -cmd "echo mem > /sys/power/state" -rtcwake 15\fR
|
|
.PP
|
|
|
|
.SS "adding callgraph data"
|
|
Add device callgraphs. Limit the trace depth and only show callgraphs 10ms or larger.
|
|
.IP
|
|
\f(CW$ sudo sleepgraph -m mem -rtcwake 15 -f -maxdepth 5 -mincg 10\fR
|
|
.PP
|
|
Capture a full callgraph across all suspend, then filter the html by a single phase.
|
|
.IP
|
|
\f(CW$ sudo sleepgraph -m mem -rtcwake 15 -f\fR
|
|
.IP
|
|
\f(CW$ sleepgraph -dmesg host_mem_dmesg.txt -ftrace host_mem_ftrace.txt -f -cgphase resume
|
|
.PP
|
|
|
|
.SS "rebuild timeline from logs"
|
|
.PP
|
|
Rebuild the html from a previous run's logs, using the same options.
|
|
.IP
|
|
\f(CW$ sleepgraph -dmesg dmesg.txt -ftrace ftrace.txt -callgraph\fR
|
|
.PP
|
|
Rebuild the html with different options.
|
|
.IP
|
|
\f(CW$ sleepgraph -dmesg dmesg.txt -ftrace ftrace.txt -addlogs -srgap\fR
|
|
|
|
.SH "SEE ALSO"
|
|
dmesg(1)
|
|
.PP
|
|
.SH AUTHOR
|
|
.nf
|
|
Written by Todd Brandt <todd.e.brandt@linux.intel.com>
|