Subject: Re: Lousy filesystem performance, or is it my motherboard?
To: Thor Lancelot Simon <firstname.lastname@example.org>
From: Kim Andersen <email@example.com>
Date: 12/01/1994 00:37:49
> After months of piddling around with awful IDE disks on my machine at home,
> I went and plugged in the BT445S I'd bought with the machine, and bought
> myself a Micropolis 1-gig disk. (roughly equivalent to the ST312000N/
> Fujitsu 2694/et al.; a 5400RPM, 8ms drive).
[rest of deleted]
I would guess on filesystem lay-out. The default parameter to newfs doesn't
really match modern drives.
Try making your filesys with eg.: newfs -d 0 -a 4 -n 1
I seem to recall from some testing here that especially the rotational delay
has a *significant* influence on the speed.
My system is a 486/33 w/AHA154B and among other drives a Micropolis 2210
Running iozone gives this:
16 512 858169 526096
16 1024 998049 643051
16 2048 1002223 631910
16 4096 1024250 649775
16 8192 1012505 685623