Messages in this thread |  | | From | "Magnus Naeslund(b)" <> | Subject | Re: 2.2.17: do_try_to_free_pages fails, no OOM | Date | Tue, 7 Nov 2000 12:11:34 +0100 |
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From: "Matthew Sanderson" <matthew@DaMOO.csun.edu> > I'm running 2.2.17 vanilla on a UP x86 box, and getting occasionally a > couple of 'VM: do_try_to_free_pages failed' messages. > The system appears to be running perfectly. It's almost out of real RAM, > but has about 100M swap unused. > > I can't figure out how this happens. Specifically, how come the call to > swap_out in do_try_to_free_pages didn't swap something out, return true, > and avoid that message being printed? > kswapd is not acting up in any way; the system doesn't appear to be OOM. > > If this isn't a bug then can we remove this printk'd message? > If it does seem to be a bug and someone'll give me a crash course on this > area of the VM I'll investigate further. I notice do_try_to_free_pages can > be called either from kswapd, or under what look like memory-pressure > conditions elsewhere. > > I'm not on lkml, so please cc me on any replies. > > --matt >
I have this problem with one of my servers with kernel 2.2.16, and then postgresql freaked out saying something like "AllocSet: memory exhausted". I changed to 2.2.17, and the messages stopped turning up in the logs, but pgsql still failes sometimes. I have to restart the daemon completely to get it working again. I dunno if there's something wrong with pgsql's memory/shared mem management, or if it's the kernels fault. (On 2.0.38 pgsql(different version tho) + box has a 700 day uptime)
Example log (2.2.16): Oct 24 00:01:34 gimme kernel: VM: do_try_to_free_pages failed for postmaster... Oct 24 00:01:34 gimme kernel: VM: do_try_to_free_pages failed for klogd... Oct 24 00:01:34 gimme kernel: VM: do_try_to_free_pages failed for caspd... Oct 24 00:07:39 gimme kernel: VM: do_try_to_free_pages failed for postmaster...
Magnus Naeslund
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