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zil: add stats for commit failure/fallback (#16315)

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There's no good way to tell when a ZIL commit fails and falls back to a
transaction sync, other than perhaps a throughput drop. This adds
counters so we can see when it happens and why.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.

Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
This commit is contained in:
Rob Norris
2024-07-26 09:53:59 +10:00
committed by GitHub
parent 2fc646160f
commit 7ddc1f737f
3 changed files with 40 additions and 0 deletions
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cmd/zilstat.in
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@@ -43,6 +43,9 @@ cols = {
"obj": [12, -1, "objset"],
"cc": [5, 1000, "zil_commit_count"],
"cwc": [5, 1000, "zil_commit_writer_count"],
"cec": [5, 1000, "zil_commit_error_count"],
"csc": [5, 1000, "zil_commit_stall_count"],
"cSc": [5, 1000, "zil_commit_suspend_count"],
"ic": [5, 1000, "zil_itx_count"],
"iic": [5, 1000, "zil_itx_indirect_count"],
"iib": [5, 1024, "zil_itx_indirect_bytes"],