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Date:      Fri, 22 Sep 2017 02:37:12 +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-bX5eqNkXeJ@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-221974-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-221974-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D221974

--- Comment #2 from commit-hook@freebsd.org ---
A commit references this bug:

Author: imp
Date: Fri Sep 22 02:36:36 UTC 2017
New revision: 323894
URL: https://svnweb.freebsd.org/changeset/base/323894

Log:
  cam iosched: Bettar account IOPS for smoother performance

  Prevent cam_iosched_iops_tick() from discarding 'unspent' ios unless
  it's a new accounting interval.

  Previously ios that weren't used between ticks were lost, as a result
  the iops limiter could enforce a limit below the configured maximum.

  Obtained from: ElectroBSD
  Submitted by: Fabian Keil
  PR: 221974

Changes:
  head/sys/cam/cam_iosched.c

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