Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

Johann Borck
2007-03-01T20:20:11Z

David Lang wrote:
>
> On Thu, 1 Mar 2007, Johann Borck wrote:
>
>> I reported this a while ago and suggested to have the number of
>> pending accepts reported with the event to save that last syscall.
>> I created an ab replacement based on kevent, and at least with my
>> machines, which are comparable to each other, the load on client
>> dropped from 100% to 2% or something. ab just doesn't give meaningful
>> results (if the client is not way more powerful). With that new
>> client I get very similar results for epoll and kevent, from 1000
>> through to 26000 concurrent requests, the results have been posted on
>> kevent-homepage in october, I just checked it with new version, but
>> there's no significant difference.
>>
>> this is the benchmark with kevent-based client:
>> http://tservice.net.ru/~s0mbre/blog/2006/10/11#2006_10_11
>> btw, each result is average over 1,000,000 requests
>>
>> and just for comparison, this is on the same machines using ab:
>> http://tservice.net.ru/~s0mbre/blog/2006/10/08#2006_10_08
>
> is this client avaialble? and what patches need to be added to the
> kernel to use it?
>
It's based on an older version of kevent, so I'll have to adapt it a bit
for use with recent patch, no other than kevent is necessary. I'll post
a link when it's cleaned up, if you want.

Johann
> David Lang
>