[squid-users] Re: Squid Seems to be Rate-Limiting TCP_HIT Downloads

Adrian Chadd wrote:

> On Fri, Jun 08, 2007, RW wrote:
>> I'm using Squid 2.6.13 locally on a FreeBSD 6.2 Desktop PC with a ufs
>> store, and I am seeing slow download speeds on TCP_HIT downloads, which
>> should be instantaneous on localhost. With cache misses I get normal
>> fluctuating speeds, but with hits I get a steady 20KB/s per connection,
>> which suggests there is some kind of rate-limiting going on.
>
> Try running aufs rather than ufs. FreeBSD-6 has perfectly functional
> threading support for disk IO.

This is a single user PC and any I'm seeing this with a single download,
with large files. There shouldn't be any significant difference in the
download of a single 5MB file between aufs and ufs on a system with no
other workload. And it's always a round 20KB/s, if I start a second,
simultaneous download it also runs at exactly 20KB/s.

This either a bug or a feature, I can't see 20KB/s being a disk access
bottleneck.
Received on Fri Jun 08 2007 - 10:15:27 MDT