diff options
| author | Warner Losh <imp@FreeBSD.org> | 2019-07-19 18:39:18 +0000 |
|---|---|---|
| committer | Warner Losh <imp@FreeBSD.org> | 2019-07-19 18:39:18 +0000 |
| commit | c37fc318c480325d211fd20f79b05ffb6edd42b5 (patch) | |
| tree | f11b2f839a4e297617a10c54a0464c0f3c34c09b /sys/dev/nvme/nvme_qpair.c | |
| parent | 710becdd96ed18951479603da62e66f9880a4a5d (diff) | |
| download | src-c37fc318c480325d211fd20f79b05ffb6edd42b5.tar.gz src-c37fc318c480325d211fd20f79b05ffb6edd42b5.zip | |
Keep track of the number of retried commands.
Retried commands can indicate a performance degredation of an nvme drive. Keep
track of the number of retries and report it out via sysctl, just like number of
commands an interrupts.
Notes
Notes:
svn path=/head/; revision=350146
Diffstat (limited to 'sys/dev/nvme/nvme_qpair.c')
| -rw-r--r-- | sys/dev/nvme/nvme_qpair.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/dev/nvme/nvme_qpair.c b/sys/dev/nvme/nvme_qpair.c index 098b6d63f532..7c28f04213a7 100644 --- a/sys/dev/nvme/nvme_qpair.c +++ b/sys/dev/nvme/nvme_qpair.c @@ -393,6 +393,8 @@ nvme_qpair_complete_tracker(struct nvme_qpair *qpair, struct nvme_tracker *tr, error = nvme_completion_is_error(cpl); retry = error && nvme_completion_is_retry(cpl) && req->retries < nvme_retry_count; + if (retry) + qpair->num_retries++; if (error && (print_on_error == ERROR_PRINT_ALL || (!retry && print_on_error == ERROR_PRINT_NO_RETRY))) { @@ -684,6 +686,7 @@ nvme_qpair_construct(struct nvme_qpair *qpair, uint32_t id, qpair->num_cmds = 0; qpair->num_intr_handler_calls = 0; + qpair->num_retries = 0; qpair->cmd = (struct nvme_command *)queuemem; qpair->cpl = (struct nvme_completion *)(queuemem + cmdsz); prpmem = (uint8_t *)(queuemem + cmdsz + cplsz); |