On 26/01/2018 18:33, Dianne Skoll wrote:
Hi,
Something went badly wrong with clamd recently; it's stuck with
hundreds/thousands of open files per process and interrupting mail flow.
When a scanning thread finishes, I see this in the strace output.
(I ran clamdscan /etc/hosts as a test):
[pid 3707] 02:11:01 sendto(295, "/etc/hosts: OK\n", 15, 0, NULL, 0) = 15
[pid 3707] 02:11:01 shutdown(295, SHUT_RDWR) = 0
[pid 3707] 02:11:01 close(295) = 0
[pid 3707] 02:11:01 futex(0x1933c3c,
FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 387, {1516950691, 0}, ffffffff)
= -1 ETIMEDOUT (Connection timed out)
[pid 3707] 02:11:31 futex(0x1933c10, FUTEX_WAKE_PRIVATE, 1) = 0
[pid 3707] 02:11:31 madvise(0x7fae6affe000, 8368128, MADV_DONTNEED) = 0
[pid 3707] 02:11:31 _exit(0) = ?
[pid 3707] 02:11:31 +++ exited with 0 +++
So it scans the file, says it's OK. and then hangs in the futex for 30
seconds.
HELP! This is causing major outages for many of our customers.
It might be useful to let us know some rather minor and truly
insignificant things, such as what version of ClamAV you are running,
and, perhaps, what Operating System you are running it on?
Alas, I fear that our collective crystal balls are currently cloudy, and
do not supply the information required...
Cheers,
Gary B-)
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