Occasional truncated responses with nginx+passenger

Heya,
I’m having problems with our nginx setup (nginx 0.7.67 -> passenger
2.2.15 -> rails 2.3.6, all running on Solaris 5.11). Most requests
are fine, but occasionally - maybe every 1 in 50 - I get a truncated
response.

I set up a test script that repeatedly requests a page that’s 22kb
long. Every so often I get a truncated response body, truncated to a
multiple of 5KB - usually 15kb. The header content length still
indicates 22kb, but only 15kb are transferred according to the
access.log.

I wrote some Rack middleware to at least check that the responses
coming out of Rails were sane, which leaves nginx and/or passenger.
Any suggestions on tracing it further?

-Jonathan

On Mon, Jul 26, 2010 at 06:40:44PM +0100, Jonathan del Strother wrote:

access.log.

I wrote some Rack middleware to at least check that the responses
coming out of Rails were sane, which leaves nginx and/or passenger.
Any suggestions on tracing it further?

Is anything in nginx error_log ?


Igor S.
http://sysoev.ru/en/

On 26 July 2010 18:40, Jonathan del Strother [email protected]
wrote:

access.log.

I wrote some Rack middleware to at least check that the responses
coming out of Rails were sane, which leaves nginx and/or passenger.
Any suggestions on tracing it further?

I got a response from one of the Phusion guys - apparently it’s a
kernel bug in Solaris when using Ruby 1.8. So I guess nginx is off
the hook for this one :slight_smile:

Nope, not even with a debug log level & passenger_log_level 3.

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