From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <sourceware-bugzilla@sourceware.org>
Received: by sourceware.org (Postfix, from userid 48)
 id E6929386184F; Wed, 31 Mar 2021 16:41:50 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E6929386184F
From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: elfutils-devel@sourceware.org
Subject: [Bug debuginfod/27673] [debuginfod] Handle source requests for same
 buildid more efficiently
Date: Wed, 31 Mar 2021 16:41:50 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: elfutils
X-Bugzilla-Component: debuginfod
X-Bugzilla-Version: unspecified
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: enhancement
X-Bugzilla-Who: vries at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: unassigned at sourceware dot org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-27673-10460-q6Nj8BO4Kh@http.sourceware.org/bugzilla/>
In-Reply-To: <bug-27673-10460@http.sourceware.org/bugzilla/>
References: <bug-27673-10460@http.sourceware.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://sourceware.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: elfutils-devel@sourceware.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Elfutils-devel mailing list <elfutils-devel.sourceware.org>
List-Unsubscribe: <https://sourceware.org/mailman/options/elfutils-devel>,
 <mailto:elfutils-devel-request@sourceware.org?subject=unsubscribe>
List-Archive: <https://sourceware.org/pipermail/elfutils-devel/>
List-Help: <mailto:elfutils-devel-request@sourceware.org?subject=help>
List-Subscribe: <https://sourceware.org/mailman/listinfo/elfutils-devel>,
 <mailto:elfutils-devel-request@sourceware.org?subject=subscribe>
X-List-Received-Date: Wed, 31 Mar 2021 16:41:51 -0000

https://sourceware.org/bugzilla/show_bug.cgi?id=3D27673

--- Comment #5 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Frank Ch. Eigler from comment #4)
> > debuginfod:
> > - when receiving a source request and ENOENT, send as reply the list of
> >   available files for the buildid
> >=20
> > client:
> > - when receiving a list of available files for a buildid, store it and
> >   use it to reply to source requests related to the buildid. That is,
> >   if the file is not in the list, reply with -2.  Otherwise, send a
> >   request to debuginfod, and expect it to succeed.
>=20
> Interesting.  A more first-class solution could be a new webapi to
> enumerate source files: a "/buildid/HEXCODE/sourcelist" query that
> returns a structured piece of data.  This can be computed by debuginfod
> fairly rapidly.  The client could cache that and use it to drive a
> negative-cache hit on a subsequent source query.

Agreed, it would be good to have this kind of functionality available more
generically.

Then the client (preferably the elfutils client itself using some setting,
otherwise the part using the elfutils client) could upon the first source
request send a sourcelist request in parallel, to have the latencies of the=
 two
requests overlap.

--=20
You are receiving this mail because:
You are on the CC list for the bug.=