Re: [tlug] Fast HTTP Talk, Httperf and Libevent, Pre-talk Hacking Session

[Edward Middleton <ejdmiddleton@example.com>]

Curt Sampson wrote:
> On 2008-11-06 11:39 +0900 (Thu), Edward Middleton wrote:
>
>   
> > I tried out the CVS version last night on an amd64 machine.  It works  
> > well up to a rate of 550 connection/second but segfaults above that.   
> >     
>
> Is it related to the connection rate, or the number of file descriptors
> in use? 
>   

It looks like the crash with caused by running out of file descriptors, 
it not seems to be just dying without any message.
I tried again with ab after increasing the number of threads and got the 
following

# ab -k -n 100000 -c 3000 http://blog.vortorus.net/

Server Software:        nginx/0.5.37
Server Hostname:        blog.vortorus.net
Server Port:            80

Document Path:          /
Document Length:        21179 bytes

Concurrency Level:      3000
Time taken for tests:   108.462 seconds
Complete requests:      100000
Failed requests:        0
Write errors:           0
Keep-Alive requests:    100000
Total transferred:      2152071584 bytes
HTML transferred:       2117970220 bytes
Requests per second:    921.99 [#/sec] (mean)
Time per request:       3253.846 [ms] (mean)
Time per request:       1.085 [ms] (mean, across all concurrent requests)
Transfer rate:          19376.75 [Kbytes/sec] received

Connection Times (ms)
             min  mean[+/-sd] median   max
Connect:        0   58 627.6      0    9029
Processing:    88 3142 461.7   3103    5407
Waiting:       87 3140 461.4   3097    5407
Total:        273 3200 588.8   3115    9708

Percentage of the requests served within a certain time (ms)
 50%   3115
 66%   3269
 75%   3342
 80%   3373
 90%   3570
 95%   3842
 98%   3966
 99%   4348
100%   9708 (longest request)


Edward