in there the disk wasn't bottlenecking
anymore...
Dave
- Original Message -
From: Bill Stoddard [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Wednesday, January 01, 2003 6:38 AM
Subject: RE: [PATCH] remove some mutex locks in the worker MPM
it may also have to do with caching we were doing
the [PATCH]
remove some mutex locks in the worker MPM thread)... so we kind of gave up
on mod_mem_cache. This is kind of how this discussion branched off of that
thread, sorry I didn't state that clearly earlier.
It would be nice if there were some kind of shared cache, shared between
processes
Aaron Bannert wrote:
The patch looks good at first glance. Have you done any testing
to see how much it improves performance (on UP and MP machines)
and if it has any effect when APR is build with generic atomics?
Here are the performance numbers that I have. I ran
httpd-2.1.0-dev on an
- Original Message -
From: Brian Pane [EMAIL PROTECTED]
Sent: Thursday, January 02, 2003 2:19 PM
For large files, I'd anticipate that mod_cache wouldn't provide much
benefit
at all. If you characterize the cost of delivering a file as
time_to_stat_and_open_and_close +
it may also have to do with caching we were doing (mod_mem_cache crashed and
burned,
What version were you running? What was the failure? If you can give me enough
info to debug the problem, I'll work on it.
Bill
Subject: RE: [PATCH] remove some mutex locks in the worker MPM
it may also have to do with caching we were doing (mod_mem_cache crashed
and
burned,
What version were you running? What was the failure? If you can give me
enough
info to debug the problem, I'll work on it.
Bill
The patch looks good at first glance. Have you done any testing
to see how much it improves performance (on UP and MP machines)
and if it has any effect when APR is build with generic atomics?
-aaron
On Tuesday, December 31, 2002, at 05:30 PM, Brian Pane wrote:
I'm working on replacing some
I'm working on replacing some mutex locks with atomic-compare-and-swap
based algorithms in the worker MPM, in order to get better concurrency
and lower overhead.
Here's the first change: take the pool recycling code out of the
mutex-protected critical region in the queue_info code. Comments
- Original Message -
From: David Burry [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Tuesday, December 31, 2002 5:54 PM
Subject: Re: [PATCH] remove some mutex locks in the worker MPM
Ohh this sounds like an awesome optimization... I noticed mutex
contentions
were extremely high on a very high traffic
