[Sysadmins] file descriptor limits

[Serge]

Здравствуйте!

в логах squid наблюдаю такие сообщения:
2008/02/23 19:40:17| WARNING! Your cache is running out of filedescriptors
2008/02/23 19:40:33| WARNING! Your cache is running out of filedescriptors
2008/02/23 19:40:49| WARNING! Your cache is running out of filedescriptors
2008/02/23 19:41:05| WARNING! Your cache is running out of filedescriptors
2008/02/23 19:41:21| WARNING! Your cache is running out of filedescriptors

документация по squid говорит, что нужно изменить "file descriptor limits"

как правильно это сделать?
сейчас у меня:

ulimit -aS

core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
max nice                        (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 16382
max locked memory       (kbytes, -l) 32
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
max rt priority                 (-r) 0
stack size              (kbytes, -s) 10240
cpu time               (seconds, -t) unlimited
max user processes              (-u) 512
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited