What is your cache_replacement_policy directive set to? --------------------------------------------- Chad E. Naugle Tech Support II, x. 7981 Travel Impressions, Ltd. >>> Rajkumar Seenivasan <rkcp613@xxxxxxxxx> 9/22/2010 1:55 PM >>> I have a strange issue happening with my squid (v 3.1.8) 2 squid servers with sibling - sibling setup in accel mode. after running the squid for 2 to 3 days, the HIT rate has gone down. from 50% HIT to 34% for TCP and from 34% HIT to 12% for UDP. store.log shows that even fresh requests are NOT getting stored onto disk and getting RELEASED rightaway. This issue is with both squids... store.log entry: 1285176036.341 RELEASE -1 FFFFFFFF 7801460962DF9DCA15DE95562D3997CB 200 1285158415 -1 1285230415 application/x-download -1/279307 GET http://.... requests have a max-age of 20Hrs. squid.conf: cache_dir aufs /squid/var/cache 20480 16 256 cache_mem 1536 MB memory_pools off cache_swap_low 50 cache_swap_high 55 refresh_pattern . 0 20% 1440 filesystem is resizerfs with RAID-0. only 11GB used for the cache. $cat /proc/sys/fs/file-nr 640 0 1525202 $ cat /proc/sys/fs/file-max 1525202 Any help is highly appreciated. thanks. Travel Impressions made the following annotations ------------------------------------------------------------- "This message and any attachments are solely for the intended recipient and may contain confidential or privileged information. If you are not the intended recipient, any disclosure, copying, use, or distribution of the information included in this message and any attachments is prohibited. If you have received this communication in error, please notify us by reply e-mail and immediately and permanently delete this message and any attachments. Thank you."