Re: [PATCH 00/09] cifs: local caching support using FS-Cache

[Suresh Jayaraman <sjayaraman-l3A5Bk7waGM@public.gmane.org>]

On 07/23/2010 02:05 PM, Stef Bon wrote:
> In my opinion there should be article published about this, describing
> fs-cache generally, and these kinds of benchmarks!

FS-Cache is nicely documented on
Documentation/filesystems/caching/fscache.txt present in the kernel
source. IIRC, LWN - http://lwn.net/ had published a couple of articles
about FS-Cache. I agree that there is little information available about
the use-cases and benchmarks.

What do you mean exactly by article? More blog entries or article in
magazines or whitepaper sort? Which one do you think has a good chance
of reaching the target audience?

Thanks,

> Using fs-cache for network filesystem is an important issue, and
> should get "exposure".
> 
> Stef Bon
> 
> 2010/7/23 Andreas Dilger <adilger-m1MBpc4rdrD3fQ9qLvQP4Q@public.gmane.org>:
>> On 2010-07-22, at 11:40, David Howells wrote:
>>> Suresh Jayaraman <sjayaraman-l3A5Bk7waGM@public.gmane.org> wrote:
>>>> As it can been seen, the performance while reading when data is cache
>>>> hot (disk) is not great as the network link is a Gigabit ethernet (with
>>>> server having working set in memory) which is mostly expected.
>>>
>>> That's what I see with NFS and AFS too.
>>>
>>>> (I could not get access to a slower network (say 100 Mb/s) where the real
>>>> performance boost could be evident).
>>
>> More interesting than a slow network is testing with more clients.  10 clients should be able to get 10x the read performance from the client-local cache, probably more than the server's peak disk/network bandwidth.
>>

-- 
Suresh Jayaraman