Unidentified subject!

hello all
i'm using cobalt cacheraq i get the following warnings in my cache.log
can anybody give me a solution to solve this problem
thank you in advance
suresh

1999/09/22 12:32:06| aio_queue_request: WARNING - Request queue growing
        Queue Length = 33
1999/09/22 12:32:06| aio_queue_request: Perhaps you should increase
NUMTHREADS in aiops.c
1999/09/22 12:32:06| aio_queue_request: First 16 items on request queue
1999/09/22 12:32:06| aio_queue_request: 1 : unlink ->
/home/squid2/cache/01/38/00013800
1999/09/22 12:32:06| aio_queue_request: 2 : open ->
/home/squid2/cache/01/3A/00013A23
1999/09/22 12:32:06| aio_queue_request: 3 : close -> FD = 684
1999/09/22 12:32:06| aio_queue_request: 4 : unlink ->
/home/squid2/cache/01/73/00017377
1999/09/22 12:32:06| aio_queue_request: 5 : read -> FD = 639
1999/09/22 12:32:06| aio_queue_request: 6 : read -> FD = 223
1999/09/22 12:32:06| aio_queue_request: 7 : close -> FD = 60
1999/09/22 12:32:06| aio_queue_request: 8 : open ->
/home/squid2/cache/0D/9C/000D9CC6
1999/09/22 12:32:06| aio_queue_request: 9 : read -> FD = 407
1999/09/22 12:32:06| aio_queue_request: 10 : close -> FD = 358
1999/09/22 12:32:06| aio_queue_request: 11 : read -> FD = 286
1999/09/22 12:32:06| aio_queue_request: 12 : read -> FD = 329
1999/09/22 12:32:06| aio_queue_request: 13 : open ->
/home/squid2/cache/00/EF/0000EF0D
1999/09/22 12:32:06| aio_queue_request: 14 : unlink ->
/home/squid2/cache/01/39/0001397E
1999/09/22 12:32:06| aio_queue_request: 15 : unlink ->
/home/squid2/cache/00/A6/0000A6A1
1999/09/22 12:32:06| aio_queue_request: 16 : close -> FD = 527
  
 
1999/09/22 11:45:14| WARNING! Your cache is running out of filedescriptors
Received on Wed Sep 22 1999 - 03:47:17 MDT