Re: 2.2.5 optimizations for web benchmarks?

Greg Lindahl (lindahl@cs.virginia.edu)
Wed, 28 Apr 1999 13:22:17 -0400 (EDT)

> > Does the scheduler prefer processes which share vm space with the current task?
> > As I see it, threads are just special processes, so the scheduler may just
> > switch to a completely different process anyway and incur the TLB flush.
>
> Either way, if you are really worried about performance, your machine
> probably isn't running anything else significant anyway.

Why do people spend so much time making assumptions?

Some web servers run CGI scripts. If you aren't using an "in-server"
implementation of CGI, you might have substantial cpu time being
consumed by non-server processes. Even if you are using an in-server
CGI, that means some threads/processes are going to be using a lot
more CPU time than the ones serving out static pages. Thus, you
still get to worry about affinity.

-- g

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