> On Fri, May 11, 2012 at 9:53 AM, Camilo Sperberg <unreal4u@xxxxxxxxx> > wrote: >> >> >> Sent from my iPhone 5 Beta [Confidential use only] >> >> On 11 mei 2012, at 07:09, "Lars Nielsen" <lars@xxxxxxxx> wrote: >> >>> >>>> >>>> On 10 mei 2012, at 23:26, Lars Nielsen wrote: >>>> >>>>> >>>>>> >>>>>> >>>>>> Sent from my iPhone 5 Beta [Confidential use only] >>>>>> >>>>>> On 10 mei 2012, at 17:40, Matijn Woudt <tijnema@xxxxxxxxx> wrote: >>>>>> >>>>>>> On Thu, May 10, 2012 at 9:04 AM, Lars Nielsen <lars@xxxxxxxx> >>>>>>> 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@xxxxxxxx >>>>> www : http://www.lfweb.dk >>>>> >>>>> >>>>> -- >>>>> PHP General Mailing List (http://www.php.net/) >>>>> To unsubscribe, visit: http://www.php.net/unsub.php >>>>> >>>> >>>> Have you tried benchmarking a really simple php page, such as >>>> >>>> <?php echo 'hello world'; ?> >>>> >>>> ? >>>> >>>> It that works, than it is definitely an issue in Drupal's >>>> configuration >>>> and not in PHP/Apache. Additionally, you could check what happens when >>>> you >>>> try to establish a session or make a database call to rule out those >>>> as >>>> well, just make really simple tests that you know wouldn't fail and >>>> run ab >>>> on them. >>>> >>>> Greetings. >>>> >>>> >>>> -- >>>> PHP General Mailing List (http://www.php.net/) >>>> To unsubscribe, visit: http://www.php.net/unsub.php >>>> >>>> >>> Thanks! >>> >>> Now I have made >>> <?php >>>  echo "Hey from PHP!"; >>> ?> >>> >>> It runs fine from a little concurrency. But with "-c 5 -n 500" it fails >>> after 308 requests! >>> >>> >>> >>> Best Regards / Med venlig hilsen >>> >>> LFWeb >>> Lars Nielsen >>> >>> >>> -- >>> PHP General Mailing List (http://www.php.net/) >>> To unsubscribe, visit: http://www.php.net/unsub.php >>> >> >> Have you tried benchmarking from localhost? Do you have any active >> firewall? Selinux? Shorewall? Anything that could block a ddos attack? >> > > A firewall is not the case here. He's testing with -c 2 and is getting > errors, with -c 50 on a static file not. Also, blocking a DDOS attack > at only 50 connections is way too low, so I don't think that would > happen. > > - Matijn > Now i have the result of a test on localhost: ab -c 1 -n 20 http://localhost/ This is ApacheBench, Version 2.3 <$Revision: 655654 $> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Licensed to The Apache Software Foundation, http://www.apache.org/ Benchmarking localhost (be patient).....done Server Software: Apache/2.2.22 Server Hostname: localhost Server Port: 80 Document Path: / Document Length: 14463 bytes Concurrency Level: 1 Time taken for tests: 3.540 seconds Complete requests: 20 Failed requests: 0 Write errors: 0 Total transferred: 298480 bytes HTML transferred: 289260 bytes Requests per second: 5.65 [#/sec] (mean) Time per request: 177.020 [ms] (mean) Time per request: 177.020 [ms] (mean, across all concurrent requests) Transfer rate: 82.33 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 0 0 0.0 0 0 Processing: 175 177 2.1 176 182 Waiting: 153 156 1.7 155 160 Total: 175 177 2.1 176 182 Percentage of the requests served within a certain time (ms) 50% 176 66% 177 75% 177 80% 178 90% 182 95% 182 98% 182 99% 182 100% 182 (longest request) xx@grafikom:/home/xx# ab -c 2 -n 20 http://localhost/ This is ApacheBench, Version 2.3 <$Revision: 655654 $> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Licensed to The Apache Software Foundation, http://www.apache.org/ Benchmarking localhost (be patient)...apr_poll: The timeout specified has expired (70007) Total of 3 requests completed Does this give any meaning? Med venlig hilsen LFWeb Lars Nielsen -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
