Async-IO

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Oskar Pearson wrote:

> Before you go and upgrade hardware, give squid-1.2 a try... the
> threads REALLY speed it up. Your machine is almost certainly spending
> all of it's time waiting for open() and close()
>
> www.linux.org.za/squid/ has 1.2 linux info

I tried to run a Squid (Squid-1.2beta20-1-henrik, Linux 2.0.32,
gcc-2.7.2.1) using the libraries (pthreads 0.7, libc 5.4.44) from the
ftp site mentioned on the above page, but it does not work well.

Symptoms:
* aio_queue_request complaints on startup
* ~2 seconds to handle cache hits
* pconn-banger failing when running more than one outstanding request at
a time (it defaults to 10).

The base installation is a RH4.2 system.

I think we need to be very careful when recommending async-io on Linux.

/Henrik

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Received on Tue Jul 29 2003 - 13:15:48 MDT