[squid-users] Squid overloading when RAID drive cache in use?

I am wondering if having cache_dir drives on a RAID controller that has
Read/Write cache turned on might cause problems? I'm fairly sure that
Squid manages the latency, etc of its cache_dir drives. The drives that
my Squids use are all on RAID controllers as single volumes. However I
recently found that if I enable Read/Write cache on the cache_dir drives
that load on the processor goes off the scale. Could it be that Squid
gets such a quick response from the drive that it thinks the drive is
super fast and thus slams it, causing it to run out of Read/Write cache
and then gets overloaded as the requests backlog? I'm hoping that this
would explain a number of my Squid servers that can be very unstable.
The cache I'm talking about is in the order of only about 128MB worth,
and from 3-4 cache_dir drives.

Peter Smith
Received on Thu Jul 10 2003 - 08:17:13 MDT