Joakim Zhang f7f6266daf MLK-24667-3 perf vendor: add bandwidth usage metric for i.MX8QM DDR Perf ... Add bandwidth usage metric for i.MX8QM DDR Perf. Test Report: ------------------------------------------------------ root@imx8qmmek:~# ./perf list metric List of pre-defined events (to be used in -e): Metrics: imx8qm-ddr0-all-r [imx8qm: bytes of all masters read from ddr0] imx8qm-ddr0-all-w [imx8qm: bytes of all masters write to ddr0] imx8qm-ddr0-bandwidth-usage [imx8qm: percentage of bandwidth usage for ddr0] imx8qm-ddr1-all-r [imx8qm: bytes of all masters read from ddr1] imx8qm-ddr1-all-w [imx8qm: bytes of all masters write to ddr1] imx8qm-ddr1-bandwidth-usage [imx8qm: percentage of bandwidth usage for ddr1] ------------------------------------------------------ root@imx8qmmek:~# ./perf stat -a -I 1000 -M imx8qm-ddr0-bandwidth-usage dd if=/dev/zero of=/dev/null bs=1M count=1000000 1.000137560 8403160 imx8_ddr0/read-cycles/ # 11.9 % imx8qm-ddr0-bandwidth-usage 1.000137560 86499449 imx8_ddr0/write-cycles/ 1.000137560 1000137560 ns duration_time 2.000542875 8818984 imx8_ddr0/read-cycles/ # 10.5 % imx8qm-ddr0-bandwidth-usage 2.000542875 74883499 imx8_ddr0/write-cycles/ 2.000542875 1000405315 ns duration_time 3.000839188 8604400 imx8_ddr0/read-cycles/ # 9.6 % imx8qm-ddr0-bandwidth-usage 3.000839188 68284175 imx8_ddr0/write-cycles/ 3.000839188 1000296313 ns duration_time -------------------------------------------------------- root@imx8qmmek:~# ./perf stat -a -I 1000 -M imx8qm-ddr1-bandwidth-usage dd if=/dev/zero of=/dev/null bs=1M count=1000000 1.000129435 15152856 imx8_ddr1/read-cycles/ # 14.5 % imx8qm-ddr1-bandwidth-usage 1.000129435 100669236 imx8_ddr1/write-cycles/ 1.000129435 1000129435 ns duration_time 2.000521875 15463356 imx8_ddr1/read-cycles/ # 13.4 % imx8qm-ddr1-bandwidth-usage 2.000521875 91710077 imx8_ddr1/write-cycles/ 2.000521875 1000392440 ns duration_time 3.000794688 15773560 imx8_ddr1/read-cycles/ # 12.7 % imx8qm-ddr1-bandwidth-usage 3.000794688 85948507 imx8_ddr1/write-cycles/ 3.000794688 1000272813 ns duration_time Reviewed-by: Fugang Duan <fugang.duan@nxp.com> Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>		2020-09-02 02:21:42 +08:00
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arm64	MLK-24667-3 perf vendor: add bandwidth usage metric for i.MX8QM DDR Perf	2020-09-02 02:21:42 +08:00
nds32	nds32: Perf porting	2018-11-06 18:01:40 +08:00
powerpc	perf vendor events: Remove P8 HW events which are not supported	2019-09-25 16:26:40 -03:00
s390	perf vendor events s390: Remove name from L1D_RO_EXCL_WRITES description	2020-01-17 19:48:30 +01:00
x86	perf vendor events amd: Remove redundant '['	2019-09-25 09:51:42 -03:00