Search Postgresql Archives

Re: High I/O writes activity on disks causing images on browser to lag and not load

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



The research is based on hypotheses and assumptions which in the end can be discarded or not. I do not know these things, I am taking one step at time, learning and trying.

I don't understand what kind of research you want me to do. I don't have any performance problem other than that images seems to get stuck on occasion, with a certain amount of users.This is what I've got, and I have spent several weeks reaching this stage. I started by removing a router and arranging another internet, benchmarking the application, study the network card, switching to Apache Server and I have ruled all of them out. I have now come to the disk, and here its postgre thats most active and its starting to feel right, but I could be wrong but what other leads do I have?

Since even a select count(*) outside my application is causing this I do not understand what conclusion I should take. After all, you said it yourself, you do not get any writes, why do I ? With perfmon under heavy load I registered 4000 I/0 transefers / sec and they where all writes so I think I am getting closer.

Here is a similar one but on linux
http://archives.postgresql.org/pgsql-admin/2005-12/msg00266.php

I am will try turn the stats off, but I am not sure how that might affect the db's internal stats on how to best run a query, what indices is good or not.. ?

Thanks / Jennifer

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux