Re: poor performance on big machine

["Simon 'corecode' Schubert" <corecode@xxxxxxxxxxxx>]

Matthew Dillon wrote:
>     Is the machine swapping?  Look at the SWAP PAGER stats with systat -vm 1.

I did not configure a swap partition, if that's sufficient information.  The box has 4GB RAM (which seem not to be completely usable, the kernel writes at bootup something like 512MB above 4GB ignored).

>     If it is swapping heavily for long periods of time this is usually an
>     indication of not having enough memory for the process load.  DragonFly
>     is pretty good at keeping things running even during periods of heavy
>     paging loads but something still has to give and it usually winds up
>     being the disk efficiency.

No, it is not swapping.  It was the start-of-build period when all build processes initialize their chroots and add pkg_add all necessary packages.  It's nothing big, just something I've noticed a couple of times.  Maybe we just need some sort of I/O scheduler.

cheers
 simon