Re: 1. thread switching time? (Krassimir Slavchev)

[ Available lists | Index of freebsd-performance | Month of Oct 2008 | Week of 31 Oct 2008 | Raw email | View thread | Wrap long lines | Reply | Tag ]
From
Julian Elischer <julian@elischer.org>
Date
31 Oct 2008 08:12:59
Subject
Re: 1. thread switching time? (Krassimir Slavchev)
Message-ID
490AB750.9040505@elischer.org

In reply to
References to

[ Hide this part ]
Krassimir Slavchev wrote:

>
> Also, I am able to set HZ=100000 but the thread switching time is still
> ~1ms.

You must be talking about the time that a thread can run before it is
pushed out by other threads? I know I've seem many x 10,000 context
switches in some cases, i.e. look at very high interrupt rates
etc. so I guess I'm not sure what you are measuring..

at one time the scheduling quantum was independent of Hz.
I am not sure how true that is now..




Elapsed time: 0.085 seconds