Possible memory leak nginx 1.1.12 with pcre and jit enabled

Daniel Carrillo daniel.carrillo at gmail.com
Fri Jan 27 11:33:40 UTC 2012

2012/1/24 Valentin V. Bartenev <ne at vbart.ru>:
> On Tuesday 24 January 2012 22:12:07 Daniel Carrillo wrote:
>> Hi all.
>> I compiled nginx against pcre 8.21 and jit enabled. With this scenario
>> in a few days the nginx processes are using more than 100MiB of RAM
>> each. The same scenario with nginx 1.1.12 compiled against the system
>> pcre library and jit disable (not available) the nginx processes are
>> not consuming more than 13MiB each (as expected).
>> CentOS 6.x
>> nginx 1.1.12
>> ./configure --with-pcre=../pcre-8.21/ --with-pcre-jit
>> --with-http_stub_status_module --with-http_ssl_module
>> --without-select_module --without-http_ssi_module
>> --without-http_userid_module --without-poll_module
>> --without-http_ssi_module --without-http_autoindex_module
>> --without-http_geo_module --without-http_map_module
>> --without-http_split_clients_module --without-http_referer_module
>> --without-http_uwsgi_module --without-http_scgi_module
>> --without-http_memcached_module --without-http_limit_conn_module
>> --without-http_limit_req_module --without-http_browser_module
>> --without-http_upstream_ip_hash_module --without-http-cache
>> --without-mail_pop3_module --without-mail_imap_module
>> --without-mail_smtp_module
>> I'm not sure if the memory leak is related to nginx, pcre,
>> configuration or a mix. Please let me know if more information is
>> needed, configuration files, etc.
> Yes, please, provide your nginx config.
> Which version is your system PCRE library? Does it leak when the "pcre_jit"
> directive is switched off?

Just for update. I sent my configuration privately to Valentin, and he
found a memory leak, he wrote a patch that works as expected, so I
think that will be fixed in 1.1.14.

Thanks so much to Valentin.

Kind regards.

More information about the nginx mailing list