Re: [Trac] Long timeout when modifying a ticket

Le 03/04/2026 =C3=A0 12:17, Clemens Feige a =C3=A9crit=C2=A0:
>=20
> 'Jean-Marc Lasgouttes' via Trac Users wrote on 03.03.2026 at 16:38:
>> Daer Trac users,
>>
>> We have a trac installation that worked well until fairly recently.=20
>> Now, every time one tries to modify a ticket, nothing happens for a=20
>> minute or so, and then the modification is done.
>>
>> This is not a matter of load on the server, it looks more like a=20
>> timeout somewhere.
>>
>> I see nothing of interest in trac.log. Have you already experienced=20
>> such a situation? Where should I look?>
> In our TRAC (on Linux) we can sometimes (not always) see long delays on=
=20
> ticket creation / modification which seem to be related to TRAC=20
> notification via e-mail.
>=20
> Check if you have enabled notification via e-mail or "CC" field in your=
=20
> ticket.

Thank you for your answer that makes me follow up on this subject as I=20
should have done earlier. It turned out that the issue was that

It seems the "lock" was a mailing problem, i.e., for whatever reason
smtp.osuosl.org started to be resolved in ipv6 way, that freezes
for 10=C2=A0mins and then switches back to ipv4.

We switched the glibc resolver to prefer IPv4 over IPv6 for
all applications. Mail seems to work fine again and trac is back.

Sorry for not letting you know earlier. Thanks to Jun for suggesting=20
creating a fill debug log, that was useful.

JMarc

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