Re: rails 2 and slow external services

On Mon, Dec 13, 2010 at 10:35 PM, Eric Wong <normalperson <at> yhbt.net> wrote:
> ghazel <at> gmail.com wrote:
>> On Mon, Dec 13, 2010 at 8:57 PM, Eric Wong <normalperson <at> yhbt.net> wrote:
>> > ghazel <at> gmail.com wrote:
>> I'm running a bit of my traffic through some Rainbows! right now, but I got:
>>
>> 2010/12/14 02:30:24 [error] 3183#0: *9229917 upstream timed out (110:
>> Connection timed out) while reading response header from upstream,
>> client: 1.2.3.4, server: mysite.com, request: "GET /blah HTTP/1.1",
>> upstream: "http://unix:/tmp/rainbows.sock:/blah", host: "mysite.com",
>> referrer: "https://foofoo.com"
>> 2010/12/14 04:28:25 [error] 3182#0: *9440717 upstream timed out (110:
>> Connection timed out) while reading response header from upstream,
>> client: 5.6.7.8, server: mysite.com, request: "GET /blah HTTP/1.1",
>> upstream: "http://unix:/tmp/rainbows.sock:/blah", host: "mysite.com"
>>
>> From nginx in the error log. My proxy_read_timeout is 300, and my
>> listen backlog is 2048 (for now...). Basically my Rainbows! config is
>> identical to my Unicorn config, where I have not seen that happen,
>> except I added "Rainbows! { use :ThreadPool; worker_connections 100
>> }".
>
> Was your app hitting the Unicorn kill -9 timeout frequently before?  In
> Rainbows!, the kill -9 timeout only kicks in when the entire
> interpreter/VM is stuck due to a broken C extension or bug in Ruby.
>
> If it's some component of your app taking a long time (and relying on
> the Unicorn kill -9 timeout), you can try the Rainbows::ThreadTimeout
> middleware: http://rainbows.rubyforge.org/Rainbows/ThreadTimeout.html

I'm not sure how I would know that - I'm not actually sure which
timeout you mean. "timeout" in the config/unicorn.rb and
config/rainbows.rb is 300, same as proxy_read_timeout. Is that it? Are
you saying when that is hit that Rainbows! and Unicorn act
differently?

-Greg
_______________________________________________
Rainbows! mailing list - rainbows-talk <at> rubyforge.org
http://rubyforge.org/mailman/listinfo/rainbows-talk
Do not quote signatures (like this one) or top post when replying