Re: improving Reiserfs Performance

[Yiannis Mavroukakis <jander@darthvader.us>]

Jos Houtman wrote:

> Yiannis Mavroukakis wrote:
>
>> Jos Houtman wrote:
>>
>>> Hello list,
>>>
>>> First of all, We are a website that provide picture albums to its 
>>> users.
>>> At moment we host almost 2 million, which are served in 5 different 
>>> formats from icons to 700x500.
>>> We store all there files on our NAS server and serve these with 
>>> SQUID proxys.
>>>
>>> But we are having performance problems, and I'am orientating myself 
>>> for possible fields of improvement.
>>>
>> [snip]
>> Have you considered the fact that your bottleneck may be over NFS?
>>
>> Y.
>
>
> I most certainly did, and it is a problem, but iam trying to work my 
> way bottom up.
> It's a bit hard to say anything about NFS performance while the 
> filesystem/disks
> could be causing the majority of the delays.
>
> After i did my best on the this level i intend to look at NFS in more 
> depth, but any hints/tips you allready have are welcome.
>
> jos
>
>
ReiserFS actually performs the best under heavy hammering and thousands 
of files IMHO ;)
Changing to RAID10 will improve performance
Reiser4: again IMHO not yet, although your site would make a nice test 
bed :)
Have you done any localised (i.e. not over a network) testing on the 
filesystem? If not, you'll be stabing in the dark for reasons, at least 
in my book.
Do you have a stock kernel or have you 'custom' compiled yours?


Y

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