> It's as though the disk drivers are optimized for this case (1024). I
The disk drivers are not, and they normally see merged runs of blocks so they
will see big chunks rather than 1K then 1K then 1K etc.
> behavior, but there is clearly some optimization relative to this size
> inherent in the design of Linux -- and it may be a pure accident. This
> person may be mixing and matching block sizes in the buffer cache, which
> would satisfy your explanation.
I see higher performance with 4K block sizes. I should see higher latency too
but have never been able to measure it. Maybe it depends on the file system.
It certainly depends on the nature of requests
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Nov 23 2000 - 21:00:22 EST