Date: Fri, 17 Apr 1998 11:36:01 +1000 From: John Saunders <john.saunders@scitec.com.au> To: lrios <lrios@ziplink.net> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: Linux And FreeBSD Message-ID: <3536B201.5716C1D7@scitec.com.au> References: <Pine.BSF.3.96.980416143919.1928E-100000@zip1.ziplink.net>
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Your problem is with disk speed not memory management.
Try this and then tell us which system is faster...
1) Edit your /etc/fstab file.
2) For all of your ufs filesystems, change the options from "rw"
to "rw,async".
3) Save the file and reboot.
Now you are playing on a level field.
By default FreeBSD uses a slow but safe disk access method, by
default Linux uses fast but unsafe.
Then if you need more performance use the ccd device to create
a striped partition across those 2 drives of yours for your /var
(and /var/spool if you have it) filesystems.
Cheers.
lrios wrote:
> Could someone please explain to me why a Linux 75 mhz machine kicks the
> hell out of a FreeBSD with a Pentium II 266mhz 256M Ram and two ultra-wide
> fast SCSI drives???
>
> I love BSD but for performance reasons linux may be my choice.
>
> Any performance tips would be helpful...
>
> My linux machine puts out about 700 (locally)emails a minute while BSD
> only puts
> out about 200... my limits appear to configured properly. My kernel
> options have been set.. Is there anything that I'm missing to get this
> machine to work??? The only difference between the two is that the Linux
> Box is working like a dog while the BSD box doesn't go above .05 load and
> stays around 90 idle
>
> What are the differences in memory managers between the two??
> I've got a consultant here trying to get linux to do everything but with
> the numbers I'm seeing it's hard to stay loyal.. Please help!!
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