Hi Sebastian,
I don't know if this will help at all, but I remember having a

Cyrus-IMAP server that always had a fair amount of disk I/O and tons of

open files that would exhibit the similar behavior. Unfortunately, it

wasn't running GENERIC  (had RAIDFRAME and a couple of other things

enabled), it was running an old OpenBSD 3.6 (amd64) system and I didn't

have time to debug the issue since it was a production box, so I just

changed the /usr/src/sys/uvm/uvm_map.h KMAP_ENT #define to be 4000

instead of 1000, recompiled the kernel, and also added crontab entries

to stop and start most of the daemons running on that machine

frequently, and that kept it up long enough to migrate the data off of it.
I know it's incredibly kludgey and hackish, but it worked temporarily

Best of luck,

Tico
Sebastian Reitenbach wrote:
>Hi list,

quoted text
>

>I have two servers, one running 4.0 and one with 3.9, they are used as web

>servers, with a

>mysql database running on them. Both are more or less idle, but I have seem

>these messages

>in /var/log/messages on both servers:

>bsd: uvm_mapent_alloc: out of static map entries

>

>I found this thread, where someone has seen the same problem:

>http://marc.theaimsgroup.com/?l=openbsd-tech&m=115959929717470&w=2

>

>The servers are either freezing completely, or may still answer on pings, and

>carp

>communication, but it is not possible to log in via ssh, or contact the apache

>server.

>

>this is the output on one of the servers, just after new start:

># vmstat -s|grep 'kernel map';grep uvm /var/log/messages

>         36 kernel map entries

>Jan 24 08:01:30 www /bsd: uvm_mapent_alloc: out of static map entries

>Jan 29 07:10:06 www /bsd: uvm_mapent_alloc: out of static map entries

>Feb 22 22:39:41 www /bsd: uvm_mapent_alloc: out of static map entries

>

>here the other running for ten days:

># vmstat -s|grep 'kernel map';grep uvm /var/log/messages

>        672 kernel map entries

>Jan 24 08:01:30 www /bsd: uvm_mapent_alloc: out of static map entries

>Jan 29 07:10:06 www /bsd: uvm_mapent_alloc: out of static map entries

>Feb 22 22:39:41 www /bsd: uvm_mapent_alloc: out of static map entries

>

>as I read the message of the other thread, I can change some kernel option, but

>if I

>understand the message above correctly, with changing the options, i can only

>extend the

>time before a new freeze or problems.

>Is there anything else I can do to keep the machines up and running?

>

>

>kind regards

>Sebastian