Date: Mon, 27 Oct 2025 18:25:31 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 290579] Strange statistics zpool iostat on a heavily loaded system Message-ID: <bug-290579-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D290579 Bug ID: 290579 Summary: Strange statistics zpool iostat on a heavily loaded system Product: Base System Version: 15.0-STABLE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: viaprog@gmail.com There are two servers on 15.0-BETA2-p1, serving a lot of data. On one of them: # zpool iostat 1 capacity operations bandwidth=20 pool alloc free read write read write ---------- ----- ----- ----- ----- ----- ----- vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M vol 120G 6.15T 14 23 4.43M 7.87M And it goes on indefinitely=E2=80=94the numbers don=E2=80=99t change. On the second: # zpool iostat 1 capacity operations bandwidth=20 pool alloc free read write read write ---------- ----- ----- ----- ----- ----- ----- vol 1.26T 5.01T 9 26 5.87M 10.5M vol 1.26T 5.01T 9 26 5.87M 10.5M vol 1.26T 5.01T 9 26 5.87M 10.5M vol 1.26T 5.01T 9 26 5.87M 10.5M vol 1.26T 5.01T 9 26 5.87M 10.5M vol 1.26T 5.01T 9 26 5.87M 10.5M vol 1.26T 5.01T 9 26 5.87M 10.5M vol 1.26T 5.01T 9 26 5.87M 10.5M vol 1.26T 5.01T 9 26 5.87M 10.5M vol 1.26T 5.01T 9 26 5.87M 10.5M vol 1.26T 5.01T 9 26 5.87M 10.5M vol 1.26T 5.01T 9 26 5.87M 10.5M vol 1.26T 5.01T 9 26 5.87M 10.5M vol 1.26T 5.01T 9 26 5.87M 10.5M And this one also goes on endlessly. Even after an hour, it=E2=80=99s the s= ame numbers on both. That can=E2=80=99t be right. On an identical server with the same workload, running 14.3-RELEASE, the picture is different=E2=80=94normal: # zpool iostat 1 capacity operations bandwidth=20 pool alloc free read write read write ---------- ----- ----- ----- ----- ----- ----- vol 32.8G 6.23T 7 30 4.33M 11.3M vol 32.8G 6.23T 0 0 0 0 vol 32.8G 6.23T 0 0 0 0 vol 33.0G 6.23T 0 572 0 155M vol 33.0G 6.23T 0 0 0 0 vol 33.0G 6.23T 0 0 0 0 vol 33.0G 6.23T 0 0 0 0 vol 33.0G 6.23T 0 0 0 0 vol 33.0G 6.23T 0 180 0 80.1M vol 33.0G 6.23T 0 274 0 61.6M vol 32.6G 6.23T 0 15 0 61.1K vol 32.6G 6.23T 0 0 0 0 vol 32.6G 6.23T 0 0 0 0 --=20 You are receiving this mail because: You are the assignee for the bug.=
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