Re: The effects of WITNESS and INVARIANTS

From: Willem Jan Withagen (wjw_at_withagen.nl)
Date: 02/25/04

  • Next message: Charles Swiger: "Re: Bad performance on alpha? (make buildworld)" 
    To: "Robert Watson" <rwatson@FreeBSD.ORG>
Date: Wed, 25 Feb 2004 00:55:17 +0100

    From: "Robert Watson" <rwatson@FreeBSD.ORG>

    > There was recently a thread on the general topic of preparing FreeBSD for
    > benchmarking, which you might want to take a look at:
    >
    > http://www.bsdforums.org/forums/showthread.php?threadid=18304
    >
    > We have a lot of debugger features on, and there are a number of general
    > features that may adversely impact microbenchmarks. I thought this was
    > getting added to the FreeBSD handbook or developer's handbook somewhere,
    > but Google isn't finding it...

    I understand the concerns for testing. I saw PHK post too, and for the current
    data
    is was slightly too late because most of it was already collected.
    There are several good suggestions in there, which will require some inventive
    rewritting of the scripts. Especially once I'd like to try 2 NFS clients work on
    one server, and they need to be started "synchronously".

    Some of the suggestions are not quite possible: run no daemons....
    NFS needs to be there, but in general services need to be reduced to a bare
    minimum.

    --WjW

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  • Next message: Charles Swiger: "Re: Bad performance on alpha? (make buildworld)"

    Relevant Pages

    • Re: The effects of WITNESS and INVARIANTS
      ... > benchmarking, which you might want to take a look at: ... > We have a lot of debugger features on, and there are a number of general ... > getting added to the FreeBSD handbook or developer's handbook somewhere, ... Especially once I'd like to try 2 NFS clients work on ...
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    • Re: The effects of WITNESS and INVARIANTS
      ... > that the 5-stable fact is the turning corner for this matter. ... There was recently a thread on the general topic of preparing FreeBSD for ... We have a lot of debugger features on, and there are a number of general ... getting added to the FreeBSD handbook or developer's handbook somewhere, ...
      (freebsd-current)
    • Re: The effects of WITNESS and INVARIANTS
      ... > that the 5-stable fact is the turning corner for this matter. ... There was recently a thread on the general topic of preparing FreeBSD for ... We have a lot of debugger features on, and there are a number of general ... getting added to the FreeBSD handbook or developer's handbook somewhere, ...
      (freebsd-performance)