Fwd: runtest takes too long on get_local_hostname

Fwd: runtest takes too long on get_local_hostname

[Tom de Vries]

Hi,

FYI, I ran into this dejagnu problem with the dwz testsuite.

Filed as http://debbugs.gnu.org/cgi/bugreport.cgi?bug=35069 .

Thanks,
- Tom

-------- Forwarded Message --------
Subject: runtest takes too long on get_local_hostname
Date: Mon, 1 Apr 2019 12:05:50 +0200
From: Tom de Vries <tdevries@suse.de>
To: bug-dejagnu@gnu.org

Hi,

I've setup a dejagnu testsuite for the dwz component (
https://sourceware.org/git/?p=dwz.git;a=summary ).

I'm running into the following problem.

Usually the testsuite runs in 12 seconds, but sometimes it takes more
than a minute (I managed to reproduce the same problem by running a
single gcc testsuite test-case).

I tracked this down to tcl info hostname taking a long time, when:
- having a vpn session active, and
- having no network connection

I manage to work around this by editing /usr/share/dejagnu/runtest.exp
and redefining get_local_hostname like this:
...
proc get_local_hostname { } {
    return [exec hostname]
}
...

I think it's a bug that a testsuite run that tests no network
functionality slows down by a factor of 5 when there's no network
connection.

[ In absence of a fix, I would already be grateful if somebody can point
out to me how I can work around this in a site.exp or board file or some
such, I tried myself but didn't manage to make that work. ]

Thanks,
- Tom