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From: "ross at burtonini dot com" <sourceware-bugzilla@sourceware.org>
To: elfutils-devel@sourceware.org
Subject: [Bug debuginfod/29975] New: Search concurrency doesn't respect CPU
 affinity
Date: Mon, 09 Jan 2023 17:38:22 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
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X-Bugzilla-Product: elfutils
X-Bugzilla-Component: debuginfod
X-Bugzilla-Version: unspecified
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: ross at burtonini dot com
X-Bugzilla-Status: UNCONFIRMED
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X-Bugzilla-Priority: P2
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29975

            Bug ID: 29975
           Summary: Search concurrency doesn't respect CPU affinity
           Product: elfutils
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: debuginfod
          Assignee: unassigned at sourceware dot org
          Reporter: ross at burtonini dot com
                CC: elfutils-devel at sourceware dot org
  Target Milestone: ---

I've a machine with lots of cores (256) but debuginfod doesn't respect CPU
affinity:

$ taskset -c 2 debuginfod -v
...
[Mon Jan  9 17:33:20 2023] (2351762/2351762): search concurrency 256

Instead of looking at the number of cores present, it should look at the nu=
mber
of cores available to it (sched_getaffinity()).

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