user/dev discussion of public-inbox itself
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From: Eric Wong <e@80x24.org>
To: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Cc: meta@public-inbox.org
Subject: Re: httpd 502s [was: trying to figure out 100% CPU usage in nntpd...]
Date: Wed, 11 Sep 2019 17:12:50 +0000
Message-ID: <20190911171250.vqqpaeb7sn34hv3s@dcvr> (raw)
In-Reply-To: <20190911102436.GA21959@pure.paranoia.local>

Konstantin Ryabitsev <konstantin@linuxfoundation.org> wrote:
> To give some more data points, downgrading to f4f0a3be still shows a
> number of /tmp/PerlIO* (deleted) entries, but the number of pipes stays
> the same over time. If I switch to the latest master, the number of
> broken pipes grows steadily following each git pull (in the hundreds
> after 10 minutes of running).

Thanks for that info, did those deleted entries eventually go
away (perhaps after several minutes)?

Kinda difficult to tie those to the corresponding TCP connection
atm, though.  I should probably put the TCP socket inode number
into the pre-unlink tempfile name to make that relationship
traceable.

> I've downgraded lore.kernel.org to f4f0a3be for now to avoid the
> resource exhaustion.

I'll try to reproduce it later today or this week.

  reply index

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-08 10:45 [PATCH] nntp: regexp always consumes rbuf if "\n" exists Eric Wong
2019-09-08 10:52 ` trying to figure out 100% CPU usage in nntpd Eric Wong
2019-09-09 10:05   ` Konstantin Ryabitsev
2019-09-09 17:53     ` Eric Wong
2019-09-10  8:38       ` Konstantin Ryabitsev
2019-09-10 18:12         ` Eric Wong
2019-09-11  2:22           ` httpd 502s [was: trying to figure out 100% CPU usage in nntpd...] Eric Wong
2019-09-11 10:24             ` Konstantin Ryabitsev
2019-09-11 17:12               ` Eric Wong [this message]
2019-09-11 17:36                 ` Konstantin Ryabitsev
2019-09-12  0:05                   ` Eric Wong
2019-09-12  2:49                     ` Eric Wong
2019-09-12  8:35                       ` Eric Wong
2019-09-12 11:37                         ` Konstantin Ryabitsev
2019-09-13  3:12                           ` Eric Wong
2019-09-13  7:03                             ` Eric Wong
2019-09-13  9:01                             ` Eric Wong
2019-09-13 18:07                             ` Konstantin Ryabitsev
2019-09-14  5:25                               ` Eric Wong
2019-09-11  9:44           ` trying to figure out 100% CPU usage in nntpd Konstantin Ryabitsev
2019-09-11 17:12             ` Eric Wong

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