[ANN] ngx_lua v0.1.5: ability to capture multiple parallel subrequests

[kindy]

        location = /t-get-lua-mem-use {
            content_by_lua '
                ngx.say("lua use " .. collectgarbage("count") .. "KB")
            ';
        }

maybe you can use this to got how many memory used by lua.
and then find out what the problem is.

On Fri, Feb 11, 2011 at 6:41 AM, Roman Vasilyev <roman at anchorfree.com> wrote:
> On 02/10/2011 02:38 PM, Roman Vasilyev wrote:
>>
>> I've updated on one of my production servers mod-lua to 0.1.5, and nginx
>> memory still growing.
>> My config is still the same
>>            location / {
>>                    include forward_proxy.conf;
>>
>>                    location = /check-spam {
>>                            internal;
>>
>>                            include spam_fastcgi.conf;
>>                    }
>>
>>                    lua_need_request_body on;
>>
>>                    rewrite_by_lua '
>>                      if ngx.var.request_method ~= "POST" then
>>                        return
>>                      end
>>                      local res = ngx.location.capture( "/check-spam", {
>> method = ngx.HTTP_POST, body = ngx.var.request_body })
>>                      local a=string.sub(res.body,0,4)=="SPAM"
>>                      if a then
>>                        return ngx.redirect("/terms-of-use.html")
>>                      end';
>>            }
>>
> Forgot to say that below is my error log with 2 very frequent messages:
>>
>> 2011/02/10 12:36:00 [alert] 3090#0: *21747555 zero size buf in output t:1
>> r:0 f:0 0000000006D42970 0000000006D42970-0000000006D42970 0000000000000000
>> 0-0 while sending request to upstream, client: 10.1.24.20, server: hss,
>> request: "POST /xxx/xxx.asmx HTTP/1.1", upstream:
>> "http://x.x.x.x/xxx/xxx.asmx", host: "xxx.com"
>> 2011/02/10 12:36:07 [alert] 3085#0: *21749071 sendfile() failed (9: Bad
>> file descriptor) while sending request to upstream, client: 10.1.16.17,
>> server: hss, request: "POST /xxx/xxx.aspx HTTP/1.1", upstream:
>> "http://x.x.x.x/xxx/xxx.aspx", host: "xxx.com"
>>
>> On 02/10/2011 02:36 AM, agentzh wrote:
>>>
>>> On Thu, Feb 10, 2011 at 6:26 PM, Alexander Kunz<akunz at ntmedia.de>  wrote:
>>>>
>>>> Thanks for sharing so many of your Nginx addons, Nginx scripting is so
>>>> exciting. I read
>>>> your 2 slides about Nginx scripting. Very intersting, are there some
>>>> more
>>>> examples or informations
>>>> about Nginx scripting?
>>>>
>>> Maybe my blog count? ;)
>>>
>>>     http://agentzh.blogspot.com/
>>>
>>> I do have the plan of writing a bunch of (detailed) tutorials on this
>>> this year.
>>>
>>>> I try out your example, you subrequest on a redis location. I use the
>>>> redis2
>>>> addon, but i
>>>> allways get in the first line the bytes for my redis request. Is there a
>>>> solution hide this information?
>>>
>>> The ngx_redis2 module returns the raw TCP response from the redis
>>> server. It's recommended to use my lua-redis-parser module (written in
>>> pure C) to parse these responses into lua data structure:
>>>
>>>     https://github.com/agentzh/lua-redis-parser
>>>
>>> If you only want to use the "get" redis command, you can try out the
>>> ngx_redis module here:
>>>
>>>     http://wiki.nginx.org/HttpRedis
>>>
>>> It returns the parsed content part of the redis response because only
>>> "get" is needed to implement.
>>>
>>>> So it would be possible to use redis2 for caching whole HTML pages.
>>>>
>>> Right, using ngx_srcache + ngx_lua + lua-redis-parser. See ngx_srcache
>>> for details:
>>>
>>>     http://github.com/agentzh/srcache-nginx-module
>>>
>>> It's much like Apache2's mod_cache, but only support silly response
>>> body caching (for now) and is 100% non-blocking. I're already using
>>> ngx_srcache + ngx_memc to cache responses via memcached in production.
>>>
>>>> Have a nice day agentzh!
>>>>
>>> Thanks! :) The same to you ;)
>>>
>>> Cheers,
>>> -agentzh
>>>
>>> _______________________________________________
>>> nginx mailing list
>>> nginx at nginx.org
>>> http://nginx.org/mailman/listinfo/nginx
>>
>>
>> _______________________________________________
>> nginx mailing list
>> nginx at nginx.org
>> http://nginx.org/mailman/listinfo/nginx
>
>
> _______________________________________________
> nginx mailing list
> nginx at nginx.org
> http://nginx.org/mailman/listinfo/nginx
>