[TYPO3-dev] Typo3 Performance

[Nicolas Cohen]

Dmitry Dulepov wrote:
> Hi!
> 
> Nicolas Cohen wrote:
>  > Hi i did another vmstat while using ab to test 100 requests with 10 
> concurrent. As you can see memory stays ok, but cpu raises and goes down.
> 
> Now I see :) It does not look bad, though you have more time spent 
> inside system than my server. Let's see. In the output below "us" is how 
> much time (in %) system spent in user mode (doing your tasks), "sy" is 
> system mode (swap, thread management, etc), "id" is idle.
> 
>  >  us sy id wa
>  >  2 0 98  0
>  >  92 8 0  0
>  >  88 12  0  0
>  >  86 14  0  0
>  >  86 14  0  0
>  >  58 7 35  0
>  >  0 0 100  0
> 
> Oops!
> 
>  >  0 0 100  0

third column is not sy, its id us:0 sy:0 id:100, i think it means 100% idle

> 
> More "oops".
> 
>  >  0 0 100  0
> 
> 3 seconds spending in system calls only???
> 
>  >  0 0 99  1

still third column
> 
> Now see mine:
> 
> us sy id wa
> 14  2 81  2
> 48  6 43  3
> 41  6 50  2
> 10  3 87  0
> 13  5 80  3
> 32  4 61  3
> 45  6 43  6
> 18  4 77  0
> 20  4 73  3
> 21  3 77  0
> 
> Average QPS that I have at the moment is 550, 35 apache rq/s with 86% if 
> 2xx and 3xx responses and system mostly idle.
> 
> Now let's do this. Execute "mysqladmin extended-status" and see value 
> for "Threads-cached". I think it is 0.

it is 0 indeed

> 
> By the way, ab shows this in your report:
>  > Non-2xx responses:      98
> 
> Why so?
> 

i wonder the same