On Wed, 14 Jul 1999 21:56:38 +0200, Jamie Lokier
<lkd@tantalophile.demon.co.uk> said:
> Does this completely avoid blocking then?
> I mean, is "readaround" for block @ 128k-192k triggered by
> reading/paging within block @ 64k-128k, or is it triggered by the first
> read with 128k-192k?
No, not yet: it's something which we'll probably do eventually.
However, on any vaguely modern hardware, the track buffers on the disk
itself will keep filling once you've submitted one IO. Accessing the
next cluster will take a latency hit on the CPU, but we still get the
full disk bandwidth overall.
--Stephen
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