Re: batched write

Hans Reiser
2006-06-19T16:39:49Z

Miklos Szeredi wrote:

>>Forgive myn utter ignorance of fuse, but does it currently context
>>switch to user space for every 4k written through VFS?
>>
>>
>
>Yes, unfortunately it does, so fuse would benefit from batched writing
>as well, with some constraint on the number of locked pages to avoid
>DoS against the page cache.
>
>Miklos
>
>
>
>
I would think that batched write is pretty essential then to FUSE
performance. If we could then get the glibc authors to not sabotage the
using of a large block size to indicate that we like large IOs (see
thread on fseek implementation), reiser4 and FUSE would be all set for
improved performance. Even without glibc developer cooperation, we will
get a lot of benefits.