Re: Asynchronous I/O

From: Duane Wessels <wessels>
Date: Tue, 15 Oct 96 15:03:56 -0700 writes:

>Joe Ramey assures me that Asynch I/O is supported for Squid on certain
>platforms. Obviously I am a duffus since I cna't find any reference,
>but I remember this point also.
>Any kind soul able to unconfuse me here?
>I am curious regarding support of Asynch I/O in Squid (I am running
>1.0.17) and its impact on cacheing disk speed.

Some support was added to the 1.1 strain. But as currently implemented
it probably makes disk performance worse. This is essentially because
of the routines in src/disk.c which will write a list of blocks to disk
per invocation from select(). The current asynch_io functions only
write one block per invocation.

Duane W.
Received on Tue Oct 15 1996 - 15:03:57 MDT

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