On Thu, Mar 01, 2007 at 04:41:27PM +0100, Eric Dumazet ([EMAIL PROTECTED]) wrote: > On Thursday 01 March 2007 16:32, Eric Dumazet wrote: > > On Thursday 01 March 2007 16:23, Evgeniy Polyakov wrote: > > > They are there, since ab runs only 50k requests. > > > If I change it to something noticebly more than 50/80k, ab crashes: > > > # ab -c8000 -t 600 -n800000000 http://192.168.0.48/ > > > This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0 > > > Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ > > > Copyright 2006 The Apache Software Foundation, http://www.apache.org/ > > > > > > Benchmarking 192.168.0.48 (be patient) > > > Segmentation fault > > > > > > Are there any other tool suitable for such loads? > > > I only tested httperf (which is worse, since it uses poll/select) and > > > 'ab'. > > > > > > Btw, host machine runs 100% too, so it is possible that client side is > > > broken (too). > > > > I have similar problems here, ab test just doesnt complete... > > > > I am still investigating with strace and tcpdump. > > OK... I found it. > > I had to loop on accept() : > > for (i=0; i<num; ++i) { > if (event[i].data.fd == main_server_s) { > do { > err = evtest_callback_main(event[i].data.fd); > } while (err != -1); > } > else > err = evtest_callback_client(event[i].data.fd); > } > > Or else we can miss an event forever...
The same here - I would just enable a debug to find it. # ab -c8000 -n80000 http://192.168.0.48/ This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0 Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Copyright 2006 The Apache Software Foundation, http://www.apache.org/ Benchmarking 192.168.0.48 (be patient) Completed 8000 requests Completed 16000 requests Completed 24000 requests Completed 32000 requests Completed 40000 requests Completed 48000 requests Completed 56000 requests Completed 64000 requests Completed 72000 requests Finished 80000 requests Server Software: Apache/1.3.27 Server Hostname: 192.168.0.48 Server Port: 80 Document Path: / Document Length: 3521 bytes Concurrency Level: 8000 Time taken for tests: 18.250921 seconds Complete requests: 80000 Failed requests: 0 Write errors: 0 Total transferred: 315691904 bytes HTML transferred: 287074172 bytes Requests per second: 4383.34 [#/sec] (mean) Time per request: 1825.092 [ms] (mean) Time per request: 0.228 [ms] (mean, across all concurrent requests) Transfer rate: 16891.86 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 137 884 481.1 920 3602 Processing: 567 888 163.6 985 997 Waiting: 47 455 238.2 439 921 Total: 765 1772 566.6 1911 4556 Percentage of the requests served within a certain time (ms) 50% 1911 66% 1911 75% 1912 80% 1913 90% 1913 95% 1914 98% 4438 99% 4497 100% 4556 (longest request) kano:~# -- Evgeniy Polyakov - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
