[Mailman-Users] Big problems with stale lockfiles on large list...
mailman at howlingfrog.com
Fri Apr 27 22:09:33 CEST 2001
Running Mailman-2.0.1, with Python 1.5.2 on a RedHat 6.2 machine along
w/Apache-1.3.14 and Sendmail-8.11.0, and am having some serious grief with
stale lockfiles on one of our lists. List contains ~60k addresses on it,
and has constant traffic to the WWW administration pages. Not high volume
for sending msgs though (only one or two a day) as its a
I'm finding, though, that the WWW processes are regularly creating stale
locks that sit around and hold everything up. For fun, I tried using "ab"
(ApacheBench) to fire up five concurrent "subscribe" requests to our box,
and saw that it regularly ended up creating stale locks and blocking out
the rest of the system. Worse yet, I'm not seeing any useful information
in the "logs/errors" file, nor am I getting anything useful in
"logs/locks" (other than seeing that some process got a lock, did its
thing, and then shut itself down _WITHOUT_ releasing the lock).
>From reading through the notes in "Default.py", it outlines that the
locking timeouts are probably one of the most important things that can be
"tuned". I'm not, however, having any luck in finding information that
outlines how these values should be tuned for BIG lists.
I'm presuming that what I'm running into is more of a config/tuning issue
than a serious bug, as I'm sure I can't be the only person running lists
Any and all information, tips, pointers, or suggestions are welcome.
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