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| author | Joakim Zhang <qiangqing.zhang@nxp.com> | 2020-09-01 21:18:58 +0800 |
|---|---|---|
| committer | Joakim Zhang <qiangqing.zhang@nxp.com> | 2020-09-02 01:56:28 +0800 |
| commit | eeff2425fdb13a6712ecd95b0d43651800a4f0b5 (patch) | |
| tree | 3e86902ec9d4e84672fbf250e2b45a58b88147aa /tools | |
| parent | 243308c68b7bf81a12a2d37e9df4445476c4401d (diff) | |
MLK-24667-2 perf vendor: add bandwidth usage metric for i.MX8QXP DDR Perf
Add bandwidth usage metric for i.MX8QXP DDR Perf.
Test Report:
----------------------------------------------------
root@imx8qxpmek:~# ./perf list metric
List of pre-defined events (to be used in -e):
Metrics:
imx8qxp-ddr0-all-r
[imx8qxp: bytes of all masters read from ddr0]
imx8qxp-ddr0-all-w
[imx8qxp: bytes of all masters write to ddr0]
imx8qxp-ddr0-bandwidth-usage
[imx8qxp: percentage of bandwidth usage for ddr0]
--------------------------------------------------------
root@imx8qxpmek:~# ./perf stat -a -I 1000 -M imx8qxp-ddr0-bandwidth-usage dd if=/dev/zero of=/dev/null bs=1M count=1000000
1.000170750 681608 imx8_ddr0/read-cycles/ # 13.6 % imx8qxp-ddr0-bandwidth-usage
1.000170750 81013320 imx8_ddr0/write-cycles/
1.000170750 1000170750 ns duration_time
2.000833375 592804 imx8_ddr0/read-cycles/ # 13.7 % imx8qxp-ddr0-bandwidth-usage
2.000833375 81756288 imx8_ddr0/write-cycles/
2.000833375 1000662625 ns duration_time
3.001393875 611804 imx8_ddr0/read-cycles/ # 13.6 % imx8qxp-ddr0-bandwidth-usage
3.001393875 80897346 imx8_ddr0/write-cycles/
3.001393875 1000560500 ns duration_time
4.001917375 600564 imx8_ddr0/read-cycles/ # 13.5 % imx8qxp-ddr0-bandwidth-usage
4.001917375 80269884 imx8_ddr0/write-cycles/
4.001917375 1000523500 ns duration_time
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/pmu-events/arch/arm64/arm/cortex-a35/imx8qxp-ddr-uncore.json | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tools/perf/pmu-events/arch/arm64/arm/cortex-a35/imx8qxp-ddr-uncore.json b/tools/perf/pmu-events/arch/arm64/arm/cortex-a35/imx8qxp-ddr-uncore.json index f3f57a3d48b4..9a399b52c178 100644 --- a/tools/perf/pmu-events/arch/arm64/arm/cortex-a35/imx8qxp-ddr-uncore.json +++ b/tools/perf/pmu-events/arch/arm64/arm/cortex-a35/imx8qxp-ddr-uncore.json @@ -1,5 +1,14 @@ [ { + "PublicDescription": "lpddr4 mek board bandwidth usage", + "BriefDescription": "imx8qxp: percentage of bandwidth usage for ddr0", + "MetricName": "imx8qxp-ddr0-bandwidth-usage", + "MetricExpr": "(( imx8_ddr0\\/read\\-cycles\\/ + imx8_ddr0\\/write\\-cycles\\/ ) * 4 * 4 / duration_time) / (600 * 1000000 * 4 * 4)", + "MetricGroup": "i.MX8QXP_DDR_MON", + "ScaleUnit": "1e2%", + "SocName": "i.MX8QXP" + }, + { "PublicDescription": "Calculate bytes all masters read from DDR based on read-cycles event. DDR interface generates 2 up and 2 down edges in an internal clock cycle, can pass 4 beats of data. 4 bytes of each beat if DDR burst width is 32 bit.", "BriefDescription": "imx8qxp: bytes of all masters read from ddr0", "MetricName": "imx8qxp-ddr0-all-r", |