Re: high load average -> slow builds

[Jonathan Larmour <jifl@jifvik.org>]

On 15/01/13 08:45, Jim Meyering wrote:
> 
> top - 08:39:36 up 812 days, 17:27,  2 users,  load average: 22.23, 26.47, 25.77
> Tasks: 318 total,  16 running, 299 sleeping,   0 stopped,   3 zombie
> Cpu(s): 18.3% us,  7.7% sy, 43.6% ni, 15.7% id, 14.5% wa,  0.2% hi,  0.0% si
> Mem:  16631336k total, 15213152k used,  1418184k free,   199780k buffers
> Swap:  2096376k total,    22868k used,  2073508k free, 12319912k cached
> 
>   PID USER      PR  NI %CPU    TIME+  %MEM  VIRT  RES  SHR S COMMAND
> 13593 apache    33   8 67.9   0:07.56  0.4 73536  67m 1516 R python
>  8219 bugzilla  25   0 56.0  26:17.24  3.1  506m 502m 3104 R email_in.pl

That email_in.pl is odd. There's one running now, occupying full CPU, and
has been running for 45 mins and counting. It comes from this:

bugzilla 25689 25675 25689  0    1 17:31 ?        00:00:00
/qmail/bin/preline sh -c /www/gcc/bugzilla/email_in.pl -v
2>>/sourceware/bugzilla/email_in.log || exit 99

Presumably started directly from qmail. I tried stracing the perl script
instance itself, but whatever it's doing is all user space.

It seems too much of a coincidence that it's there at the top when you
looked and when I looked.

The log at this time includes:

Comments cannot be longer than 65535 characters.

which seems fair enough as a one-off, except this log message seems to get
triggered a lot - about once an hour, which doesn't seem right.

Also:
SENDER=gcc-bugzilla@gcc.gnu.org
which implies bugzilla was the one sending the mail.

Has the script got stuck, perhaps sending ever larger email in a loop? Or
is someone abusing it?

It's hard for me to see what the email is it's dealing with. Perhaps
someone more familiar with bugzilla can work out where (or if) it spools
it temporarily.

Jifl
-- 
--["No sense being pessimistic, it wouldn't work anyway"]-- Opinions==mine