Thanks Cansu, I fixed the rlimit problem. I can run 1400 users on each frontend but I can't run it for even 2000 users even on 3 frontends. I even tried to add one more load generator but no luck. I monitor the network, cpu, memory and disk and nothing seems to be saturated. What is the maximum number of users you ever seen in a successful run? I dont get any specific error, it just fail as I increase the number of users. I don't know where to look for the problem. May I ask what do you think?
Regards On Wed, May 7, 2014 at 6:29 PM, Cansu Kaynak <[email protected]> wrote: > Dear Reza, > > The "Too many open files” error typically occurs because of the value of > “open files” in ulimit settings. > Make sure that you set that value to unlimited and the setting is not > valid only for the current shell (you might need to modify > */etc/security/limits > *to change the system-wide settings). > > Hope this helps. > Let us know if you have more questions. > > -- > Cansu > > On 07 May 2014, at 01:24, reza azimi <[email protected]> wrote: > > Hello folks, > > I'm having problem scaling up web serving benchmark. My configuration is > as follow I have 2 front ends 1 backend 1 memcached(I figure it out how to > set it up based on cloudstone documents) and 1 load generator. I used the > patch for the file store so I load it with 102 users as instructed. since > each of server has 8 cores and 72 gigs of memory I increase the > "*worker_processes" > in the nginx.conf and *pm.max_children = 8 in php-fpm.conf. I ran 1200 > users with one frontend without any error. (except Average images loaded > per Home Page <3) but when I try to run even with 1800 users on two front > end I get these errors: > > UIDriverAgent[0].1803.doLogin: Too many open files > UIDriverAgent[0].1803.doTagSearch: Too many open files > IDriverAgent[0].1803.doHomePage: Too many open files > .... > Image at > http://128.148.@@.@@@/fileService.php?cache=false&file=E72642T.jpg size > of 383 bytes is too small. Image may not exist > ... > > > I tried to use this > link<http://www.cyberciti.biz/faq/linux-unix-nginx-too-many-open-files/>and > solve the problem but it didnt work. > I've checked my cpu, memory usage using top and they are still below 20% > in all nodes. Can you help me find the parameters that I have changed and > also if I have to do anything to increase number of users. > My question is what should I do if I want to increase the usage of my > servers? I think the answer is increase the number of users so how I should > increase them and have successful run ? > Let me know if you need any other information > Appreciate your help in advance. > > Regards > Reza > > > > > > >
