Performance of 4.x vs 5.x (Re: Lifetime of FreeBSD branches)
max at love2party.net
Tue May 24 12:41:41 PDT 2005
On Monday 23 May 2005 23:21, Matthias Buelow wrote:
> Kris Kennaway wrote:
> > One thing that probably confuses and misleads a lot of people is when
> > they build world or a kernel and notice that it's taking much longer
> > than it did under 4.x, so they assume this means that 5.x is slower
> > than 4.x. It doesn't. What it means is that 5.x and 4.x have
> > different C compilers, and gcc 3.x is much slower at compiling code
> > than gcc 2.x. You have to be very careful to draw conclusions based
> > on subjective assessments like this.
> Another thing might be that interactive response time seems to be worse.
> While I (or rather ports) unpack the firefox/thunderbird source, the
> machine is pretty much bogged down (mouse cursor jumps around, audio
> stutters...). Haven't seen that on FreeBSD since the 386 days.
I have seen this on my box. Disabling one of the USB-ports solved the
problem. I was seeing very high IRQ-rates. Check $vmstat -i during the
process to see if you have abnormal high rate jumps. It might be that we
must investigate some of our drivers to play nice with each other.
/"\ Best regards, | mlaier at freebsd.org
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