Roller Query...

[Sidharth Jain <Si...@indiatimes.co.in>]

Hello Team,

I am user of roller platform @ http://blogs.timesofindia.indiatimes.com/ as tech-head; over last month, I have been facing scalability issues on the site;
Upon load-testing the application (excluding all external-domain calls/resources) for 1 hour with maximum of 100 users, following results were realized:


 *   Total transactions executed in duration are 10,489; transaction represent count of pages rendered (random home-page, post-page, tag-page & category-page)
 *   Transaction success rate being 99.056 %
 *   Average load-time for all 4 types of pages was between 20 secs - 40 secs;
 *   Worse of load-time for home-page was 67 secs;  category-list page was 55 secs;  past-page 110 secs; tag page was 60 secs

Environment configurations:

 *   App server: 4GB mem /2 CPU [tomcat server.xml connection pool allows 'maxactive' = 500; Heap-size: 512M-3GB]
 *   DB server: 16GB mem/ 8 CPU [max connections allowed = 1000]

Average load on both App & DB server was also high while load-testing duration of 1 hr:

 *   App server - 64.25714 % (CPU) / 74.69857 % (Memory utilization)
 *   DB server - 67.38429 % (CPU) / 82.72714 % (Memory utilization)

My questions are:
1)      Whether total transactions of 10489 in 1 hour (max 100 users) is decent performance or not? What should have been ideal/optimum?
2)      How to improve load-time of each respective page?

Regards
Siddharth Jain
Times Internet Limited, India

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Re: Roller Query...

[Dave <sn...@gmail.com>]

On Thu, Jun 28, 2012 at 7:06 AM, Sidharth Jain
<Si...@indiatimes.co.in> wrote:
> I am user of roller platform @ http://blogs.timesofindia.indiatimes.com/ as tech-head; over last month, I have been facing scalability issues on the site;
> Upon load-testing the application (excluding all external-domain calls/resources) for 1 hour with maximum of 100 users, following results were realized:
>
>
>  *   Total transactions executed in duration are 10,489; transaction represent count of pages rendered (random home-page, post-page, tag-page & category-page)
>  *   Transaction success rate being 99.056 %
>  *   Average load-time for all 4 types of pages was between 20 secs - 40 secs;
>  *   Worse of load-time for home-page was 67 secs;  category-list page was 55 secs;  past-page 110 secs; tag page was 60 secs
>
> Environment configurations:
>
>  *   App server: 4GB mem /2 CPU [tomcat server.xml connection pool allows 'maxactive' = 500; Heap-size: 512M-3GB]
>  *   DB server: 16GB mem/ 8 CPU [max connections allowed = 1000]
>
> Average load on both App & DB server was also high while load-testing duration of 1 hr:
>
>  *   App server - 64.25714 % (CPU) / 74.69857 % (Memory utilization)
>  *   DB server - 67.38429 % (CPU) / 82.72714 % (Memory utilization)
>
> My questions are:
> 1)      Whether total transactions of 10489 in 1 hour (max 100 users) is decent performance or not? What should have been ideal/optimum?
> 2)      How to improve load-time of each respective page?


Those are surprisingly bad results. What is your cache configuration for Roller?

- Dave