# Memory leaks nginx with lua memc upstream\_keepalive modules/ **URL:** \ **Category:** NGINX\ **Created:** [February 16, 2012, 5:53pm UTC](https://www.ruby-forum.com/t/memory-leaks-nginx-with-lua-memc-upstream-keepalive-modules/216903 "2012-02-16T17:53:03Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![luislavena](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/0ea827/32.png) [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Post date:** [February 16, 2012, 5:53pm UTC](https://www.ruby-forum.com/t/memory-leaks-nginx-with-lua-memc-upstream-keepalive-modules/216903/1 "2012-02-16T17:53:03Z")
[root@VKRT083 /home/fish]# uname -a FreeBSD VKRT083.local 8.2-RELEASE-p3 FreeBSD 8.2-RELEASE-p3 #0: Tue Sep 27 18:45:57 UTC 2011 removed\_email\_address@domain.invalid:/usr/obj/usr/src/sys/GENERIC amd64 [root@VKRT083 /home/fish]# /usr/local/nginx/sbin/nginx -V nginx version: nginx/1.0.12 built by gcc 4.2.1 20070719 [FreeBSD] configure arguments: –add-module=…/chaoslawful-lua-nginx-module-7cb4e09/ –add-module=…/ngx\_http\_upstream\_keepalive-d9ac9ad67f45 –add-module=…/simpl-ngx\_devel\_kit-24202b4/ –add-module=…/agentzh-memc-nginx-module-4007350/ [root@VKRT083 /home/fish]# ps axuww|grep ngi – skip some strings – root 14076 0.0 0.0 13488 2620 ?? Is 12:45PM 0:00.02 nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/new.conf (nginx) fish 14077 0.0 0.0 29872 7624 ?? S 12:45PM 1:31.10 nginx: worker process (nginx) fish 14078 0.0 9.1 2702512 2287312 ?? S 12:45PM 1:56.73 nginx: worker process (nginx) fish 14080 0.0 0.0 29872 7772 ?? S 12:45PM 1:30.19 nginx: worker process (nginx) fish 14081 0.0 8.6 2622640 2173000 ?? S 12:45PM 1:52.28 nginx: worker process (nginx) fish 14082 0.0 0.0 31920 9888 ?? S 12:45PM 1:40.60 nginx: worker process (nginx) fish 14083 0.0 0.0 31920 9948 ?? S 12:45PM 1:38.71 nginx: worker process (nginx) fish 14085 0.0 0.0 29872 7640 ?? S 12:45PM 1:48.66 nginx: worker process (nginx) fish 14086 0.0 5.9 1520816 1480176 ?? S 12:45PM 1:55.11 nginx: worker process (nginx) fish 14087 0.0 0.0 31920 9864 ?? S 12:45PM 1:36.69 nginx: worker process (nginx) fish 14089 0.0 0.0 29872 7752 ?? S 12:45PM 1:44.56 nginx: worker process (nginx) fish 14091 0.0 0.0 29872 6148 ?? S 12:45PM 1:47.95 nginx: worker process (nginx) fish 14094 0.0 0.0 29872 7200 ?? S 12:45PM 1:44.58 nginx: worker process (nginx) fish 14099 0.0 14.4 4895920 3620924 ?? S 12:45PM 1:50.18 nginx: worker process (nginx) fish 14103 0.0 0.0 31920 8576 ?? S 12:45PM 1:40.24 nginx: worker process (nginx) fish 14104 0.0 0.0 29872 7864 ?? S 12:45PM 1:45.71 nginx: worker process (nginx) fish 14106 0.0 0.0 29872 7824 ?? S 12:45PM 1:36.71 nginx: worker process (nginx) fish 14107 0.0 0.0 29872 6752 ?? S 12:45PM 1:46.78 nginx: worker process (nginx) Posted at Nginx Forum: > **[Memory leaks nginx with lua memc upstream\_keepalive modules/](https://forum.nginx.org/read.php?2,222489,222489#msg-222489)** > > \[root@VKRT083 /home/fish\]# uname -a FreeBSD VKRT083.local 8.2-RELEASE-p3 FreeBSD 8.2-RELEASE-p3 #0: Tue Sep 27 18:45:57 UTC 2011 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 \[root@VKRT083 /home/fish\]#... ---
**Author:** ![fish\_ka\_praha](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/eada6e/32.png) [@fish\_ka\_praha](https://www.ruby-forum.com/u/fish_ka_praha)\ **Post date:** [February 16, 2012, 5:54pm UTC](https://www.ruby-forum.com/t/memory-leaks-nginx-with-lua-memc-upstream-keepalive-modules/216903/2 "2012-02-16T17:54:17Z")
head of nginx.conf [root@VKRT083 /home/fish]# cat /usr/local/nginx/conf/new.conf user fish; worker\_processes 32; pid logs/nginxnew.pid; #worker\_priority -5; worker\_rlimit\_nofile 32000; events { worker\_connections 32000; use kqueue; } http { include mime.types; default\_type application/octet-stream; ``` log_format main '$remote_addr - $remote_user [$time_local] ``` $request ’ '“$status” $body\_bytes\_sent “$http\_referer” ’ ‘“$http\_user\_agent” “$http\_x\_forwarded\_for”’; ``` server_names_hash_bucket_size 512; sendfile on; tcp_nopush on; tcp_nodelay on; gzip on; gzip_comp_level 1; gzip_min_length 1000; gzip_proxied any; gzip_disable "MSIE [1-6]\."; gzip_types application/x-javascript text/plain application/xml; server_tokens off; keepalive_timeout 15; ignore_invalid_headers on; reset_timedout_connection on; ``` upstream backend {server 192.168.10.5:11211; keepalive 512 single;} upstream tycoon0 {server 192.168.10.6:11111; keepalive 512 single;} upstream tycoon1 {server 192.168.10.7:11111; keepalive 256 single;} Posted at Nginx Forum: > **[Re: Memory leaks nginx with lua memc upstream\_keepalive modules/](https://forum.nginx.org/read.php?2,222489,222490#msg-222490)** > > \[root@VKRT083 /home/fish\]# uname -a FreeBSD VKRT083.local 8.2-RELEASE-p3 FreeBSD 8.2-RELEASE-p3 #0: Tue Sep 27 18:45:57 UTC 2011 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 \[root@VKRT083 /home/fish\]#... ---
**Author:** ![fish\_ka\_praha](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/eada6e/32.png) [@fish\_ka\_praha](https://www.ruby-forum.com/u/fish_ka_praha)\ **Post date:** [February 17, 2012, 5:07am UTC](https://www.ruby-forum.com/t/memory-leaks-nginx-with-lua-memc-upstream-keepalive-modules/216903/3 "2012-02-17T05:07:38Z")
On Fri, Feb 17, 2012 at 12:52 AM, fish\_ka\_praha [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > –add-module=../simpl-ngx\_devel\_kit-24202b4/ > –add-module=../agentzh-memc-nginx-module-4007350/ Thank you for the report. But could you show me your Lua code? Or could you prepare a minimized example that can reproduce this leak? Without knowing how you actually use ngx\_lua, I’m afraid we cannot find the real cause here 🙂 Thanks! -agentzh