From: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
To: David Bremner <david@tethera.net>, "Rollins\,
Jameson" <jrollins@caltech.edu>,
Notmuch Mail <notmuch@notmuchmail.org>
Subject: Re: parallelize test suite
Date: Sun, 05 May 2019 11:22:50 -0400 [thread overview]
Message-ID: <87lfzllyd1.fsf@fifthhorseman.net> (raw)
In-Reply-To: <878svlhlwc.fsf@tethera.net>
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On Sat 2019-05-04 19:53:23 -0300, David Bremner wrote:
> Last time we discussed parallel test running, there we concerns about
> multiple versions of certain servers colliding with each other. This
> still seems to be at least a theoretical issue with smtp-dummy, although
> a glance suggests that it might only currently be used in T310-emacs.sh.
> I'm not sure what a robust solution is here.
>
> - gpg-agent
> - emacs
> - dtach
>
> Did I miss any other background processes run by the test suite?
>
> I can imagine gpg-agent is managed OK these days since it's started
> automagically by gpg.
gpg-agent is fine, because it's isolated by $GNUPGHOME, and each test
uses a distinct $GNUPGHOME (see GNUPGHOME="${TEST_TMPDIR}/gnupg in
test-lib.sh)
> emacs seems to use the current process id in the socket name, so that
> also should be OK, although it should maybe be replaced with something
> more robust to avoid problems with pid rollover. I _think_ including the
> test name in the emacs server would do the trick
I would have no objection to this improvement in isolation of the emacs
server processes, but i think the pid rollover race condition is so
minor that i don't think it sholud be a blocker for the adoption of this
series.
> The dtach socket is in the tmp.T* directory, so that should be OK.
>
> I wonder if a good solution would be to make running the test suite in
> parallel be opt-in (e.g. by configuration option). Or at least have a
> way to disable it for situations like CI and autobuilders.
I agree that making it possible to force serialized tests would be good.
I'd prefer that running tests in parallel be the default, though i
wouldn't object to a ./configure --serialize-tests option if someone
wants to implement it.
I actually think that CI and autobuilders *should* exercise the parallel
tests, as annoying as that might be initially, because it seems likely
to catch any other potential entanglements.
thanks for the review!
--dkg
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next prev parent reply other threads:[~2019-05-05 15:26 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-04 20:57 parallelize test suite Rollins, Jameson
2019-05-04 20:57 ` [PATCH 1/3] tests: remove some redundant pre-cleanup of the corpus MAIL_DIR Rollins, Jameson
2019-05-04 20:57 ` [PATCH 2/3] tests: remove entangling corpus index optimization Rollins, Jameson
2019-05-04 20:57 ` [PATCH 3/3] tests: run all tests in parallel, if available Rollins, Jameson
2019-05-06 4:44 ` [PATCH] tests: environment variable to specify that tests should be serialized Rollins, Jameson
2019-05-06 10:32 ` [PATCH] test: add configurable port to smtp-dummy David Bremner
2019-05-06 19:39 ` Tomi Ollila
2019-05-06 20:55 ` Daniel Kahn Gillmor
2019-05-07 10:20 ` [PATCH] test: let the OS choose a port for smtp-dummy David Bremner
2019-05-07 12:38 ` Daniel Kahn Gillmor
2019-05-08 15:59 ` Tomi Ollila
2019-05-10 10:16 ` David Bremner
2019-05-06 19:15 ` [PATCH] tests: environment variable to specify that tests should be serialized Tomi Ollila
2019-05-06 20:58 ` Daniel Kahn Gillmor
2019-05-05 10:22 ` [PATCH 1/3] tests: remove some redundant pre-cleanup of the corpus MAIL_DIR Tomi Ollila
2019-05-04 21:33 ` parallelize test suite Rollins, Jameson
2019-05-04 21:39 ` Daniel Kahn Gillmor
2019-05-04 22:53 ` David Bremner
2019-05-05 15:22 ` Daniel Kahn Gillmor [this message]
2019-05-05 16:44 ` Tomi Ollila
2019-05-06 21:39 ` Daniel Kahn Gillmor
2019-05-07 10:26 ` David Bremner
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