Summary of results:
RAID0:
Changing vfs.read_max 8 -> 16 and MAXPHYS 128k -> 1M
increased read performance significantly from 129Mb/s to 199MB/s
Max raw device speed here was 234Mb/s
FS -> Raw device: 35Mb/s 14.9% performance loss
RAID5:
Changing vfs.read_max 8 -> 16 produced a small increase
129M
On Mon, 2 May 2005, Poul-Henning Kamp wrote:
> In message <[EMAIL PROTECTED]>, Eric Anderson writes:
>
> >Don't mean to be terse here, but I'm talking about the same test done an
> >two different RAID5 configurations, with different disks, and not just
> >me - other users in this very thread see
> All partitions / file system creation was done using the OS default
> tool i.e. FreeBSD: sysinstall, Suse: yast
Perhaps the defaults are a bit dangerous. If you have the time, could
you post results with freebsd mounting asynchronously (add async as an
option in the fstab) and linux mounting
AW> I can produce the same effect here with
AW> dd if=/dev/zero of=/dev/null bs=400k count=1
AW> (no disc involved). It gets very nasty with bs=1m
I understand it, i want to know how to give more priority for
sound subsystem instead another dev IO.
--
Best regards,
Andrey
--- Andrey Smagin <[EMAIL PROTECTED]> wrote:
> driver :) ) or call of SB buffer fill. How to diagnose what
> uninterruptable
> process(or in system function) can to lock CPU for so much time
> (1 sound buffer - 4096 bytes 4096/176400=~23ms) ? And, please,
> help me with
> tuning of sound performanc
Hi ALL,
I not sure that it only low disk performance, but.
When i copying /usr/src tree from file server (AMD K6-2 225) to my Duron
1133(1GB RAM), speed is about 3-4MBytes/s. But played music on my PC is some
gappy. Also removing /usr/ports tree have same much effect for music. I set
large b
On 05/02/05 23:37, Petri Helenius wrote:
Robert Watson wrote:
The next thing that would be quite nice to measure is the rate of I/O
transactions per second we can get to the disk using the disk device
directly, with a minimal transaction size. I have a vague
recollection that you have to be car
