# Error in nginx\_http\_push\_module: unable to allocate message, worker subscriber queue marker in share

**URL:** <https://www.ruby-forum.com/t/error-in-nginx-http-push-module-unable-to-allocate-message-worker-subscriber-queue-marker-in-share/203691>\
**Category:** NGINX\
**Created:** [February 25, 2011, 7:11am UTC](https://www.ruby-forum.com/t/error-in-nginx-http-push-module-unable-to-allocate-message-worker-subscriber-queue-marker-in-share/203691 "2011-02-25T07:11:06Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**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 25, 2011, 7:11am UTC](https://www.ruby-forum.com/t/error-in-nginx-http-push-module-unable-to-allocate-message-worker-subscriber-queue-marker-in-share/203691/1 "2011-02-25T07:11:06Z")

</div>

Hi,  
I am using nginx\_http\_push\_module for a web service which provides real  
time visitors stats for websites using our service. The service works  
fine for couple of days but after that it stops responding and leaves  
errors like following in error.log for each subscriber or publisher  
request.

```
 2011/02/21 04:00:55 [crit] 18800#0: ngx_slab_alloc() failed: no

```

memory  
2011/02/21 04:00:55 [crit] 18800#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:00:55 [error] 18800#0: \*2812675 push module: unable  
to allocate message in shared memory, client: 127.0.0.1, server:  
[async-presence.bumpin.com](http://async-presence.bumpin.com), request: “POST  
/publish?id=a837a96c06a029d36c1503d9c450c79a HTTP/1.1”, host:  
“[async-presence.bumpin.com](http://async-presence.bumpin.com)”  
2011/02/21 04:00:58 [crit] 18798#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:00:58 [crit] 18798#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:00:58 [error] 18798#0: \*2812340 push module: unable  
to allocate worker subscriber queue marker in shared memory, client:  
213.58.208.210, server: [async-presence.bumpin.com](http://async-presence.bumpin.com), request: “GET  
/activity?id=870897807857a92dcdfdadf3721aba71&\_1298288754326= HTTP/1.1”,  
host: “[async-presence.bumpin.com](http://async-presence.bumpin.com)”, referrer:  
“[http://www.keepersofmetal.net/search/label/Visions%20of%20Atlantis](http://www.keepersofmetal.net/search/label/Visions%20of%20Atlantis)”  
2011/02/21 04:00:59 [crit] 18799#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:00:59 [crit] 18799#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:00:59 [error] 18799#0: \*2812817 push module: unable  
to allocate message in shared memory, client: 127.0.0.1, server:  
[async-presence.bumpin.com](http://async-presence.bumpin.com), request: “POST  
/publish?id=d1637e1f2fedb569c1350a6ccd6d79e2 HTTP/1.1”, host:  
“[async-presence.bumpin.com](http://async-presence.bumpin.com)”  
2011/02/21 04:00:59 [crit] 18798#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:00:59 [crit] 18798#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:00:59 [error] 18798#0: \*2812828 push module: unable  
to allocate message in shared memory, client: 127.0.0.1, server:  
[async-presence.bumpin.com](http://async-presence.bumpin.com), request: “POST  
/publish?id=f6d0850613e92edeacf3b7596aa304b3 HTTP/1.1”, host:  
“[async-presence.bumpin.com](http://async-presence.bumpin.com)”  
2011/02/21 04:01:00 [crit] 18798#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:01:00 [crit] 18798#0: ngx\_slab\_alloc() failed: no  
memory

And even when it is working it generates lots of errors  
2011/02/22 03:42:58 [alert] 4665#0: ngx\_slab\_free(): chunk is  
already free

Following are my push configurations:

```
    location /publish {
      set $push_channel_id $arg_id; #/?id=239aff3 or somesuch
      push_publisher;

      push_store_messages off; # enable message queueing
    }

    # public long-polling endpoint
    location /activity {
      push_subscriber;

      push_subscriber_concurrency broadcast;
      set $push_channel_id $arg_id;
      default_type text/plain;
      send_timeout 3600;
    }

```

And here is the output of command nginx -V  
nginx version: nginx/0.8.54  
built by gcc 4.3.3 (Ubuntu 4.3.3-5ubuntu4)  
TLS SNI support enabled  
configure arguments: --conf-path=/etc/nginx/nginx.conf  
–error-log-path=/var/log/nginx/error.log --pid-path=/var/run/nginx.pid  
–lock-path=/var/lock/nginx.lock  
–http-log-path=/var/log/nginx/access.log --with-http\_dav\_module  
–http-client-body-temp-path=/var/lib/nginx/body --with-http\_ssl\_module  
–http-proxy-temp-path=/var/lib/nginx/proxy  
–with-http\_stub\_status\_module  
–http-fastcgi-temp-path=/var/lib/nginx/fastcgi --with-debug  
–with-http\_flv\_module --add-module=/opt/nginx\_http\_push\_module-0.692

Is this behavior due to some bug in the push module or is there  
something wrong with my server configurations.

Thanks,  
Zeeshan

Posted at Nginx Forum:

> **[Error in nginx\_http\_push\_module: unable to allocate message, worker...](https://forum.nginx.org/read.php?2,178290,178290#msg-178290)**
>
> Hi, I am using nginx\_http\_push\_module for a web service which provides real time visitors stats for websites using our service. The service works fine for couple of days but after that it stops responding and leaves errors like following in error.log...

---

<div class="post-metadata">

**Author:** ![zeeshan.m.malik](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/z/278dde/32.png) [@zeeshan.m.malik](https://www.ruby-forum.com/u/zeeshan.m.malik)\
**Post date:** [February 27, 2011, 5:02pm UTC](https://www.ruby-forum.com/t/error-in-nginx-http-push-module-unable-to-allocate-message-worker-subscriber-queue-marker-in-share/203691/2 "2011-02-27T17:02:20Z")

</div>

nginx\_http\_push\_module exists some bugs now.

The author uses a global pool to allocate small memory, while free it  
when  
use up. As we known,Nginx won’t free small memory until we destory it.  
So it  
leads to memory leaks.

see:[http://blog.lifeibo.com](http://blog.lifeibo.com) for more informations.

lizi

at 2011-2-25，14:09，“zeeshan.m.malik” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ：

Hi,  
I am using nginx\_http\_push\_module for a web service which provides real  
time visitors stats for websites using our service. The service works  
fine for couple of days but after that it stops responding and leaves  
errors like following in error.log for each subscriber or publisher  
request.

```
2011/02/21 04:00:55 [crit] 18800#0: ngx_slab_alloc() failed: no

```

memory  
2011/02/21 04:00:55 [crit] 18800#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:00:55 [error] 18800#0: \*2812675 push module: unable  
to allocate message in shared memory, client: 127.0.0.1, server:  
[async-presence.bumpin.com](http://async-presence.bumpin.com), request: “POST  
/publish?id=a837a96c06a029d36c1503d9c450c79a HTTP/1.1”, host:  
“[async-presence.bumpin.com](http://async-presence.bumpin.com)”  
2011/02/21 04:00:58 [crit] 18798#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:00:58 [crit] 18798#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:00:58 [error] 18798#0: \*2812340 push module: unable  
to allocate worker subscriber queue marker in shared memory, client:  
213.58.208.210, server: [async-presence.bumpin.com](http://async-presence.bumpin.com), request: “GET  
/activity?id=870897807857a92dcdfdadf3721aba71&\_1298288754326= HTTP/1.1”,  
host: “[async-presence.bumpin.com](http://async-presence.bumpin.com)”, referrer:  
“[http://www.keepersofmetal.net/search/label/Visions%20of%20Atlantis](http://www.keepersofmetal.net/search/label/Visions%20of%20Atlantis)”  
2011/02/21 04:00:59 [crit] 18799#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:00:59 [crit] 18799#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:00:59 [error] 18799#0: \*2812817 push module: unable  
to allocate message in shared memory, client: 127.0.0.1, server:  
[async-presence.bumpin.com](http://async-presence.bumpin.com), request: “POST  
/publish?id=d1637e1f2fedb569c1350a6ccd6d79e2 HTTP/1.1”, host:  
“[async-presence.bumpin.com](http://async-presence.bumpin.com)”  
2011/02/21 04:00:59 [crit] 18798#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:00:59 [crit] 18798#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:00:59 [error] 18798#0: \*2812828 push module: unable  
to allocate message in shared memory, client: 127.0.0.1, server:  
[async-presence.bumpin.com](http://async-presence.bumpin.com), request: “POST  
/publish?id=f6d0850613e92edeacf3b7596aa304b3 HTTP/1.1”, host:  
“[async-presence.bumpin.com](http://async-presence.bumpin.com)”  
2011/02/21 04:01:00 [crit] 18798#0: ngx\_slab\_alloc() failed: no  
memory  
2011/02/21 04:01:00 [crit] 18798#0: ngx\_slab\_alloc() failed: no  
memory

And even when it is working it generates lots of errors  
2011/02/22 03:42:58 [alert] 4665#0: ngx\_slab\_free(): chunk is  
already free

Following are my push configurations:

```
   location /publish {
     set $push_channel_id $arg_id; #/?id=239aff3 or somesuch
     push_publisher;

     push_store_messages off; # enable message queueing
   }

   # public long-polling endpoint
   location /activity {
     push_subscriber;

     push_subscriber_concurrency broadcast;
     set $push_channel_id $arg_id;
     default_type text/plain;
     send_timeout 3600;
   }

```

And here is the output of command nginx -V  
nginx version: nginx/0.8.54  
built by gcc 4.3.3 (Ubuntu 4.3.3-5ubuntu4)  
TLS SNI support enabled  
configure arguments: --conf-path=/etc/nginx/nginx.conf  
–error-log-path=/var/log/nginx/error.log --pid-path=/var/run/nginx.pid  
–lock-path=/var/lock/nginx.lock  
–http-log-path=/var/log/nginx/access.log --with-http\_dav\_module  
–http-client-body-temp-path=/var/lib/nginx/body --with-http\_ssl\_module  
–http-proxy-temp-path=/var/lib/nginx/proxy  
–with-http\_stub\_status\_module  
–http-fastcgi-temp-path=/var/lib/nginx/fastcgi --with-debug  
–with-http\_flv\_module --add-module=/opt/nginx\_http\_push\_module-0.692

Is this behavior due to some bug in the push module or is there  
something wrong with my server configurations.

Thanks,  
Zeeshan

Posted at Nginx Forum:

> **[Error in nginx\_http\_push\_module: unable to allocate message, worker...](https://forum.nginx.org/read.php?2,178290,178290#msg-178290)**
>
> Hi, I am using nginx\_http\_push\_module for a web service which provides real time visitors stats for websites using our service. The service works fine for couple of days but after that it stops responding and leaves errors like following in error.log...