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| author |   Martin K. Petersen <martin.petersen@oracle.com> | 2023-03-09 21:50:53 -0500 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-03-09 21:50:53 -0500 |
| commit | 99e0cd4d552a152c4e453511997441d1d0dde3cc (patch) | |
| tree | e1453f6226f21b9aa0a1eef3a77f1f9c61988394 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | Merge patch series "scsi: target: make RTPI an TPG identifier" (diff) | |
| parent | scsi: hisi_sas: Add device attribute experimental_iopoll_q_cnt for v3 hw (diff) | |
| download | wireguard-linux-99e0cd4d552a152c4e453511997441d1d0dde3cc.tar.xz wireguard-linux-99e0cd4d552a152c4e453511997441d1d0dde3cc.zip | |
Merge patch series "Add poll support for hisi_sas v3 hw"
chenxiang <chenxiang66@hisilicon.com> says:
To support IO_URING IOPOLL support for hisi_sas, we need to:
- Add and fill mq_poll interface to poll queue;
- Ensure internal I/Os (including internal abort I/Os) are delivered and
completed through non-iopoll queue (queue 0);
Sending internal abort commands to non-poll queue actually requires to
sending the abort command to every queue. This carries a a risk. Make iopoll
support module parameter "experimental".
I have tested performance on v3 hw with different modes as follows. 4K
READs and 4K WRITEs both see an improvement when enabling poll mode:
4K READ 4K RANDREAD 4K WRITE 4K RANDWRITE
interrupt + libaio 1770k 1316k 1197k 831k
interrupt + io_uring 1848k 1390k 1238k 857k
iopoll + io_uring 2117k 1364k 1874k 849k
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
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