diff options
Diffstat (limited to 'man')
| -rw-r--r-- | man/intel_gpu_top.rst | 41 |
1 files changed, 12 insertions, 29 deletions
diff --git a/man/intel_gpu_top.rst b/man/intel_gpu_top.rst index a5f7175b..19c71230 100644 --- a/man/intel_gpu_top.rst +++ b/man/intel_gpu_top.rst @@ -7,9 +7,9 @@ Display a top-like summary of Intel GPU usage --------------------------------------------- .. include:: defs.rst :Author: IGT Developers <igt-dev@lists.freedesktop.org> -:Date: 2016-03-01 +:Date: 2018-04-04 :Version: |PACKAGE_STRING| -:Copyright: 2009,2011,2012,2016 Intel Corporation +:Copyright: 2009,2011,2012,2016,2018 Intel Corporation :Manual section: |MANUAL_SECTION| :Manual group: |MANUAL_GROUP| @@ -21,42 +21,25 @@ SYNOPSIS DESCRIPTION =========== -**intel_gpu_top** is a tool to display usage information of an Intel GPU. It -requires root privilege to map the graphics device. +**intel_gpu_top** is a tool to display usage information on Intel GPU's. + +The tool gathers data using perf performance counters (PMU) exposed by i915 and other platform drivers like RAPL (power) and Uncore IMC (memory bandwidth). OPTIONS ======= --s SAMPLES - Number of samples to acquire per second. - --o FILE - Collect usage statistics to FILE. If file is "-", run non-interactively - and output statistics to stdout. - --e COMMAND - Execute COMMAND to profile, and leave when it is finished. Note that the - entire command with all parameters should be included as one parameter. +-s <ms> + Refresh period in milliseconds. -h - Show usage notes. + Show help text. -EXAMPLES -======== - -intel_gpu_top -o "cairo-trace-gvim.log" -s 100 -e "cairo-perf-trace /tmp/gvim" - Run cairo-perf-trace with /tmp/gvim trace, non-interactively, saving the - statistics into cairo-trace-gvim.log file, and collecting 100 samples per - second. - -Note that idle units are not displayed, so an entirely idle GPU will only -display the ring status and header. +LIMITATIONS +=========== -BUGS -==== +* Not all metrics are supported on all platforms. Where a metric is unsupported it's value will be replaced by a dashed line. -Some GPUs report some units as busy when they aren't, such that even when idle -and not hung, it will show up as 100% busy. +* Non-root access to perf counters is controlled by the *perf_event_paranoid* sysctl. REPORTING BUGS ============== |