Comments for Peter Williams http://pezra.barelyenough.org/blog Mon, 12 May 2008 04:23:27 +0000 http://wordpress.org/?v=2.5 Comment on mod_proxy_balancer Is A Two Timing Hussy by Casey http://pezra.barelyenough.org/blog/2008/04/mod_proxy_balancer-is-a-two-timing-hussy/#comment-50434 Casey Thu, 08 May 2008 18:02:43 +0000 http://pezra.barelyenough.org/blog/?p=328#comment-50434 <p>Peter, I too have seen this same issue with mod_proxy_balancer and some long running queries. It happens exactly how you described it too ... connection 1 starts the long running query, conn 2 and 3 finish ... and four is stuck waiting for 1 to finish. Unfortunately at this point we have just increased the number of mongrels and tuned the long running queries. It seems to have helped for now - but definitely not an optimal solution. I would be interested to see how HAProxy worked for you.</p> <p>Keep me posted. Casey</p> Peter,
I too have seen this same issue with mod_proxy_balancer and some long running queries. It happens exactly how you described it too … connection 1 starts the long running query, conn 2 and 3 finish … and four is stuck waiting for 1 to finish. Unfortunately at this point we have just increased the number of mongrels and tuned the long running queries. It seems to have helped for now - but definitely not an optimal solution. I would be interested to see how HAProxy worked for you.

Keep me posted.
Casey

]]> Comment on Java Daemon by Prakash http://pezra.barelyenough.org/blog/2005/03/java-daemon/#comment-49335 Prakash Fri, 02 May 2008 19:13:00 +0000 http://pezra.barelyenough.org/wordpress/?p=74#comment-49335 <p>I have a requirement to write a java daemon in Unix, which will be an java application. For example say abc.java. which should print "hello world" whenever i call the application. I have few questions is - How to make a call to a daemon ? Do i have to extend Thread in my abc.java class to runn continuesly in the background?</p> <p>Thanks</p> I have a requirement to write a java daemon in Unix, which will be an java application. For example say abc.java. which should print “hello world” whenever i call the application. I have few questions is -
How to make a call to a daemon ?
Do i have to extend Thread in my abc.java class to runn continuesly in the background?

Thanks

]]> Comment on Java Daemon by DP http://pezra.barelyenough.org/blog/2005/03/java-daemon/#comment-49295 DP Fri, 02 May 2008 15:18:39 +0000 http://pezra.barelyenough.org/wordpress/?p=74#comment-49295 <p>Thanks for the excellent tutorial Peter. I was able to create a java-based daemon modeled after your approach and saved hours (probably days?) of time. Great job!</p> Thanks for the excellent tutorial Peter. I was able to create a java-based daemon modeled after your approach and saved hours (probably days?) of time. Great job!

]]> Comment on Humane Interfaces by kuri http://pezra.barelyenough.org/blog/2005/12/humane-interfaces/#comment-48640 kuri Tue, 29 Apr 2008 09:46:06 +0000 http://pezra.barelyenough.org/blog/?p=186#comment-48640 <p>if myarray.first.is_a ?(thingy)’ vs. ‘ myArray(0).Class.getName(), etc,etc; it is more natural to humans like a programming lang should be (after all, what’s the point?). Also you can state that conditional many ways if that is more natural to you, using one of the 78 available methods.</p> if myarray.first.is_a ?(thingy)’ vs. ‘ myArray(0).Class.getName(), etc,etc; it is more natural to humans like a programming lang should be (after all, what’s the point?). Also you can state that conditional many ways if that is more natural to you, using one of the 78 available methods.

]]> Comment on mod_proxy_balancer Is A Two Timing Hussy by Peter Williams http://pezra.barelyenough.org/blog/2008/04/mod_proxy_balancer-is-a-two-timing-hussy/#comment-48563 Peter Williams Mon, 28 Apr 2008 17:05:21 +0000 http://pezra.barelyenough.org/blog/?p=328#comment-48563 <p>Glenn,</p> <p>That does not appear to be exactly what I want. I don't want requests dispatched to the least busy backend. I want them dispatched to a not busy backend. If there is not an idle backend available, I want them queued until there is one.</p> <p>Basically any balancer algorithm with the ability to set a max connections on each backend (that actually worked) would solve my problem. Once there is a balancer for nginx that has that I am there.</p> Glenn,

That does not appear to be exactly what I want. I don’t want requests dispatched to the least busy backend. I want them dispatched to a not busy backend. If there is not an idle backend available, I want them queued until there is one.

Basically any balancer algorithm with the ability to set a max connections on each backend (that actually worked) would solve my problem. Once there is a balancer for nginx that has that I am there.

]]> Comment on mod_proxy_balancer Is A Two Timing Hussy by Glenn Rempe http://pezra.barelyenough.org/blog/2008/04/mod_proxy_balancer-is-a-two-timing-hussy/#comment-48562 Glenn Rempe Mon, 28 Apr 2008 16:32:29 +0000 http://pezra.barelyenough.org/blog/?p=328#comment-48562 <p>Your solution is likely waiting in Nginx + the Upstream Fair module.</p> <p>Nginx is a fantastic (and lightweight) reverse proxy and the Upstream fair load balancer loads your back end processes according to usage.</p> <p>The module is here.</p> <p>http://github.com/gnosek/nginx-upstream-fair/tree/master</p> <p>Glenn</p> Your solution is likely waiting in Nginx + the Upstream Fair module.

Nginx is a fantastic (and lightweight) reverse proxy and the Upstream fair load balancer loads your back end processes according to usage.

The module is here.

http://github.com/gnosek/nginx-upstream-fair/tree/master

Glenn

]]> Comment on Load Testing and Virtualization Tools by Robert Iakobashvili http://pezra.barelyenough.org/blog/2008/03/load-testing-and-virtualization-tools/#comment-44574 Robert Iakobashvili Mon, 24 Mar 2008 10:16:20 +0000 http://pezra.barelyenough.org/blog/2008/03/load-testing-and-virtualization-tools/#comment-44574 <p>Peter, Thanks for your great introduction into curl-loader.</p> <p>If you can and wish to release your scripts under an open-source license, please, either post them inlined to the curl-loader-devel mailing list or to me.</p> <p>Thank you in advance. Sincerely, Robert Iakobashvili A curl-loader maintainer.</p> Peter,
Thanks for your great introduction into curl-loader.

If you can and wish to release your scripts under an open-source license, please, either post them inlined to the curl-loader-devel mailing list or to me.

Thank you in advance.
Sincerely,
Robert Iakobashvili
A curl-loader maintainer.

]]> Comment on Load Testing and Virtualization Tools by Glenn Rempe http://pezra.barelyenough.org/blog/2008/03/load-testing-and-virtualization-tools/#comment-43762 Glenn Rempe Tue, 18 Mar 2008 04:14:29 +0000 http://pezra.barelyenough.org/blog/2008/03/load-testing-and-virtualization-tools/#comment-43762 <p>Do think you would be able to share any of the load generating ruby scripts you wrote for curl-loader as a starting point for us? (You can email them to me at the address provided if you like)</p> <p>Much appreciated.</p> Do think you would be able to share any of the load generating ruby scripts you wrote for curl-loader as a starting point for us? (You can email them to me at the address provided if you like)

Much appreciated.

]]> Comment on Nicer phpDoc Comments by Peter Williams http://pezra.barelyenough.org/blog/2006/10/nicer-phpdoc-comments/#comment-43634 Peter Williams Mon, 17 Mar 2008 03:56:45 +0000 http://pezra.barelyenough.org/blog/2006/10/nicer-phpdoc-comments/#comment-43634 <p>Spot,</p> <p>I have heard tale of VIM having the ability to be customized and that seems be an abomination to all for which VI stands. :) Which is a long way of saying, I don't have a shortcut like this for VIM. Good luck, though.</p> Spot,

I have heard tale of VIM having the ability to be customized and that seems be an abomination to all for which VI stands. :) Which is a long way of saying, I don’t have a shortcut like this for VIM. Good luck, though.

]]> Comment on Nicer phpDoc Comments by Spot http://pezra.barelyenough.org/blog/2006/10/nicer-phpdoc-comments/#comment-43572 Spot Sun, 16 Mar 2008 13:46:16 +0000 http://pezra.barelyenough.org/blog/2006/10/nicer-phpdoc-comments/#comment-43572 <p>I know asking this to an Emacs fan is like the Soviet Union asking the United States for a cookie during the Cold War, but...</p> <p>We all use VIM on our project, and while we have full PHP syntax highlighting, I completely agree with what you are saying here. In fact I think if the comments were highlighted it would be easier for me to get my developers to actually document stuff. :)</p> <p>Do you know of any shortcut like this for VIM?</p> I know asking this to an Emacs fan is like the Soviet Union asking the United States for a cookie during the Cold War, but…

We all use VIM on our project, and while we have full PHP syntax highlighting, I completely agree with what you are saying here. In fact I think if the comments were highlighted it would be easier for me to get my developers to actually document stuff. :)

Do you know of any shortcut like this for VIM?

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