Jeff Pang wrote:
rihad:
But what about Posix threads & Async IO? (./configure
--enable-async-io=2 ...)? Don't they take advantage of multiple
CPUs/cores/cache_dirs?
Yes Async-IO benefits from multi-cpu on disk IO, if you're using it.
Squid's main daemon is a single process, that benefits nothing from SMP
system.
Since disk I/O is often the bottleneck (given enough RAM), it can be
said that, thanks to async I/O, Squid mostly scales well to the number
of CPUs, issuing several disk I/O operations simultaneously &
asynchronously, so it can proceed to execute the main loop without
waiting for I/O completion? In that case that part of the FAQ needs
updating, I guess.
