Comments on: MongoDB and Symfony. Yes? :) Part 2: Simple Queries http://blog.jasonmooberry.com/2009/08/mongodb-and-symfony-yes-part-2-simple-queries/ Stuff I did for you. Thu, 22 Jul 2010 08:06:15 -0700 http://wordpress.org/?v=2.8.4 hourly 1 By: Jason Mooberry http://blog.jasonmooberry.com/2009/08/mongodb-and-symfony-yes-part-2-simple-queries/comment-page-1/#comment-1122 Jason Mooberry Tue, 13 Jul 2010 05:24:52 +0000 http://blog.jasonmooberry.com/?p=3#comment-1122 Thanks for the feedback. I think there's a lot of factors that are going to show up in production which I didn't consider and was really hoping to just get some sense of the speed differences. I'd be interested to see how even these tests would run on current versions of MongoDB given the development that has taken place since I did this. Thanks for the feedback. I think there’s a lot of factors that are going to show up in production which I didn’t consider and was really hoping to just get some sense of the speed differences. I’d be interested to see how even these tests would run on current versions of MongoDB given the development that has taken place since I did this.

]]> By: Marcel M. Cary http://blog.jasonmooberry.com/2009/08/mongodb-and-symfony-yes-part-2-simple-queries/comment-page-1/#comment-1022 Marcel M. Cary Tue, 29 Jun 2010 03:17:39 +0000 http://blog.jasonmooberry.com/?p=3#comment-1022 Regarding: "and after several tests the average response time was 950ms" Seems to me that measuring a "warm" system would tend to down-play the importance of on-disk layout and highlight the efficiency of in-memory, CPU-bound computation. But that won't scale past a memory-sized dataset. Another scenario that would reflect a disk-sized dataset might involve clearing various caches, such as the MySQL query cache and the OS-level filesystem buffer cache, between runs. Together, the warm and cold measurements might bracket what you'd expect in a production system? Regarding: “and after several tests the average response time was 950ms”

Seems to me that measuring a “warm” system would tend to down-play the importance of on-disk layout and highlight the efficiency of in-memory, CPU-bound computation. But that won’t scale past a memory-sized dataset.

Another scenario that would reflect a disk-sized dataset might involve clearing various caches, such as the MySQL query cache and the OS-level filesystem buffer cache, between runs.

Together, the warm and cold measurements might bracket what you’d expect in a production system?

]]> By: Jason Mooberry http://blog.jasonmooberry.com/2009/08/mongodb-and-symfony-yes-part-2-simple-queries/comment-page-1/#comment-307 Jason Mooberry Tue, 13 Apr 2010 07:36:32 +0000 http://blog.jasonmooberry.com/?p=3#comment-307 Hey Gilles. Yeah there's definitely some optimizations to be done here. But MongoDB seems to roll pretty quick with their versions so these benches really should be redone. Or not. Sometimes you just have to dig in and see what works best for your particular application. Hey Gilles. Yeah there’s definitely some optimizations to be done here. But MongoDB seems to roll pretty quick with their versions so these benches really should be redone. Or not. Sometimes you just have to dig in and see what works best for your particular application.

]]> By: Jason Mooberry http://blog.jasonmooberry.com/2009/08/mongodb-and-symfony-yes-part-2-simple-queries/comment-page-1/#comment-306 Jason Mooberry Tue, 13 Apr 2010 07:24:54 +0000 http://blog.jasonmooberry.com/?p=3#comment-306 hehe. yeah been really busy and finally getting back to this site. :) sorry. there will be no part 3. hehe. yeah been really busy and finally getting back to this site. :) sorry. there will be no part 3.

]]> By: Gilles http://blog.jasonmooberry.com/2009/08/mongodb-and-symfony-yes-part-2-simple-queries/comment-page-1/#comment-116 Gilles Mon, 08 Feb 2010 13:24:57 +0000 http://blog.jasonmooberry.com/?p=3#comment-116 Did you care about query cache to run the mysql queries? Did you disable it? If it can help you comprehend why MyISAM has the best record full counting system, your test reminded me there is a trick on the myisam tables : they directly store how many rows each table has and do not count them so... which is not the same with multi-versioning handling like InnoDB. Did you care about query cache to run the mysql queries? Did you disable it?
If it can help you comprehend why MyISAM has the best record full counting system, your test reminded me there is a trick on the myisam tables : they directly store how many rows each table has and do not count them so… which is not the same with multi-versioning handling like InnoDB.

]]> By: Tuner http://blog.jasonmooberry.com/2009/08/mongodb-and-symfony-yes-part-2-simple-queries/comment-page-1/#comment-88 Tuner Sat, 09 Jan 2010 10:06:22 +0000 http://blog.jasonmooberry.com/?p=3#comment-88 Great tests! Waiting for more to come! :) Great tests! Waiting for more to come! :)

]]> By: Eno http://blog.jasonmooberry.com/2009/08/mongodb-and-symfony-yes-part-2-simple-queries/comment-page-1/#comment-3 Eno Tue, 06 Oct 2009 00:38:51 +0000 http://blog.jasonmooberry.com/?p=3#comment-3 Where's part 3? :-) Where’s part 3? :-)

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