unicorn Ruby/Rack server user+dev discussion/patches/pulls/bugs/help
 help / color / mirror / code / Atom feed
From: Cedric Maion <cedric@maion.com>
To: mongrel-unicorn@rubyforge.org
Subject: `kill -SIGTRAP <worker pid>` to get a live ruby backtrace + generate backtrace when murdering worker due to timeout
Date: Sat, 23 Jun 2012 18:12:23 +0200	[thread overview]
Message-ID: <1340467944-23621-1-git-send-email-cedric@maion.com> (raw)

Hi,

The following patch allows dumping of live Ruby backtraces of running workers by sending a TRAP signal (kill -5) to the worker PID.
The master also automatically generates a backtrace when it kills a worker due to timeout: this helps identifying what was doing the worker and hopefully give a hint of what was taking so much time.

Kind regards,

    Cedric

PS: not subscribed to the ML, so please CC: me when replying. Thanks!
_______________________________________________
Unicorn mailing list - mongrel-unicorn@rubyforge.org
http://rubyforge.org/mailman/listinfo/mongrel-unicorn
Do not quote signatures (like this one) or top post when replying

             reply	other threads:[~2012-06-23 16:29 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-06-23 16:12 Cedric Maion [this message]
2012-06-23 16:12 ` [PATCH] `kill -SIGTRAP <worker pid>` to get a live ruby backtrace + generate backtrace when murdered worker due to timeout Cedric Maion
2012-06-23 18:55   ` [PATCH] `kill -SIGTRAP <worker pid>` Eric Wong
2012-06-24 11:05     ` Cedric Maion
2012-06-25  3:59       ` Eric Wong

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: https://yhbt.net/unicorn/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1340467944-23621-1-git-send-email-cedric@maion.com \
    --to=cedric@maion.com \
    --cc=mongrel-unicorn@rubyforge.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this public inbox

	https://yhbt.net/unicorn.git/

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).