Re: batched write — Linux Kernel

On 6/19/06, Miklos Szeredi <[email protected]> wrote:

> I would think that batched write is pretty essential then to FUSE
> performance.

Well, yes essential if the this is the bottleneck in write throughput,
which is most often not the case, but sometimes it is.


I can vouch for this.  I did some experiments with an example FUSE
filesystem that discards the data in userspace.  Exporting such a
filesystem over NFS gives us 80 MB/s writes when FUSE is modified to
write with 32K block sizes.  With the standard FUSE (4K writes), we
get  closer to 50 MB/s.

Miklos



-Akshat

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Follow-Ups:
- Re: batched write
  - From: Hans Reiser <[email protected]>

References:
- [PATCH] updated reiser4 - reduced cpu usage for writes by writing more than 4k at a time (has implications for generic write code and eventually for the IO layer)
  - From: Hans Reiser <[email protected]>
- Re: [PATCH] updated reiser4 - reduced cpu usage for writes by writing more than 4k at a time (has implications for generic write code and eventually for the IO layer)
  - From: Christoph Hellwig <[email protected]>
- batched write
  - From: "Vladimir V. Saveliev" <[email protected]>
- Re: batched write
  - From: Andrew Morton <[email protected]>
- Re: batched write
  - From: Hans Reiser <[email protected]>
- Re: batched write
  - From: Nix <[email protected]>
- Re: batched write
  - From: Hans Reiser <[email protected]>
- Re: batched write
  - From: Miklos Szeredi <[email protected]>
- Re: batched write
  - From: Hans Reiser <[email protected]>
- Re: batched write
  - From: Miklos Szeredi <[email protected]>

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