Hi Dirk-Willem,
Can you please clarify your mentioning the bucket-brigade footprint?
Are they so slow they make memory-based cache no more efficient then
disk-based one? Or the opposite: sendfile() works so well that serving
content from memory is not any faster?
I'm developing an Apache output filter for highly loaded servers and
proxies that juggles small-size buckets and brigades extensively. I'm
not at the stage yet where I can do performance tests but if I knew
this would definitely impact performance, I would perhaps switch to
fixed-size buffers straight away...
Thank you.
KC
On 26 Mar 2008, at 14:43, Dirk-Willem van Gulik wrote:
On Mar 25, 2008, at 8:04 PM, Akins, Brian wrote:
Use really small files so you won't fill up pipe. Using 1 1x1 gif,
I run
out of CPU before I run out of bandwidth.
Agreed. This is what I was working on.
My cache size is smaller and is in /dev/shm.
In that case - you are not going to see any delta with a mem-disk or
real disk :). I am hoping that mod_mem_cache can be made faster
though -- as it can in theory dispense with a lot more than just
mod_memmap. But the footprint of the bucked-brigades seems such that
it barely matters (and I am right now stuck on the CPU which has the
ethernet card its IRQ beeing way too afine).
Dw
