Re: Performance / AB issue?

> > > Sent from my iPhone 5 Beta [Confidential use only] > > On 10 mei 2012, at 17:40, Matijn Woudt <tijnema@gmail.com> wrote: > >> On Thu, May 10, 2012 at 9:04 AM, Lars Nielsen <lars@lfweb.dk> wrote: >>> Hi there, >>> >>> I have apache-2.22/php 5.3.10 set up on a dedicated server but I have a >>> strange issue. >>> >>> I have made a Drupal 7 site with a mysql db. >>> >>> If I stress-test the site with : ab -c 1 -n 150 >>> http://sitename/ it >>> works >>> fine. >>> If I stress-test the site with : ab -c 2 -n 20 >>> http://sitename/ it >>> kills >>> apache. >>> If I stress-test the site with : ab -c 50 -n 1500 >>> http://sitename/static.html it works fine. >>> >>> I have set apache's errorlog to debug. But it writes nothing, either in >>> the virtualhost or in the server-file. >>> >>> Can anyone give a hint about what can be wrong? >>> >>> >> >> What do you mean with 'kills apache', does it terminate apache or does >> apache hang (eg. 100% cpu), and respond normal after the stress test >> is over? >> And what is the index of your site? A php script, or..? Do you have >> ModRewrite redirects etc? >> >> - Matijn >> >> -- >> PHP General Mailing List (http://www.php.net/) >> To unsubscribe, visit: http://www.php.net/unsub.php >> > > Can you visit the site normally? Try less verbosing in apache, that is > pretty intensive, but as you can benchmark a static file well (with > moderate high settings), i assume it is some configuration problem in > drupal. > > Greeting. > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > Hi, I can visit the site normaly, but with 2-3 concurrent ab test it fails. seen from 'ps' and 'htop' it seems that both apache and mysql continues to run normaly but it doesnt respond. If i run netstat -an after the test it shows this : Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN tcp 1 0 x.x.x.x:80 x.x.x.x:39237 CLOSE_WAIT tcp 1 0 x.x.x.x:80 x.x.x.x:39236 CLOSE_WAIT tcp 0 0 x.x.x.x:22 x.x.x.x:47383 ESTABLISHED tcp 0 0 127.0.0.1:80 127.0.0.1:34775 ESTABLISHED tcp 1 0 x.x.x.x:80 x.x.x.x:39300 CLOSE_WAIT ESTABLISHED tcp 0 0 127.0.0.1:34775 127.0.0.1:80 ESTABLISHED tcp 0 0 x.x.x.x:80 x.x.x.x:39330 ESTABLISHED tcp6 0 0 :::22 :::* LISTEN tcp6 0 0 ::1:25 :::* LISTEN So it does seem like there should be room for new tcp connections? But if I restart apache then it works again... So I guess it is a apache/php configuration issue? -- Med venlig hilsen / Best Regards LFWeb Lars Nielsen Thorsensvej 30 4800 Nykøbing Falster Tlf: +45 20 64 85 76 email : lars@lfweb.dk www : http://www.lfweb.dk