Date: Fri, 01 Sep 2017 10:30:19 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 221974] cam iosched: The iops limiter should enforce limits below the quanta value and should not discard 'unspent' ios Message-ID: <bug-221974-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D221974 Bug ID: 221974 Summary: cam iosched: The iops limiter should enforce limits below the quanta value and should not discard 'unspent' ios Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Keywords: patch Severity: Affects Some People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: fk@fabiankeil.de Flags: mfc-stable11? Created attachment 185971 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D185971&action= =3Dedit cam iosched: Enforce iop limits below the quanta value and preserve "unspen= t" ios Currently the iops limiter allows at least one iop per tick, as a result limits below the quanta value aren't enforced. ios that aren't used between ticks are lost, as a result the iops limiter can enforce a limit significantly below the configured maximum. The attached patch set fixes both issues. Obtained from: ElectroBSD --=20 You are receiving this mail because: You are the assignee for the bug.=
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