From: "fche at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: elfutils-devel@sourceware.org
Subject: [Bug debuginfod/28249] New: httpd-buildid-after-you gadget locks on wrong url
Date: Thu, 19 Aug 2021 16:02:25 +0000 [thread overview]
Message-ID: <bug-28249-10460@http.sourceware.org/bugzilla/> (raw)
https://sourceware.org/bugzilla/show_bug.cgi?id=28249
Bug ID: 28249
Summary: httpd-buildid-after-you gadget locks on wrong url
Product: elfutils
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: debuginfod
Assignee: unassigned at sourceware dot org
Reporter: fche at redhat dot com
CC: elfutils-devel at sourceware dot org
Target Milestone: ---
bug #27673 added a "after-you" waiting system into debuginfod, which is
intended to prevent the server from trying to service multiple concurrent
requests for the exact same debuginfo artifact. This saves wear & tear & time,
as the non-first queries can use the fdcache to fish out the result, rather
than decompressing etc. again.
Unfortunately, the code has a one-liner bug. It uses the string "/buildid" as
the unique key, not the whole URL, so it in effect limits debuginfod to
servicing exactly one buildid request at a time, which was not intentional.
02144 unique_set_reserver<string> after_you(busy_urls, url1);
url1 is the wrong key. :-(
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next reply other threads:[~2021-08-19 16:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-19 16:02 fche at redhat dot com [this message]
2021-08-19 17:14 ` [Bug debuginfod/28249] " fche at redhat dot com
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