Could you upload the java program that is generating the graphs? I'm
curious to see how my system performs and I'm sure others are too.
David
On Thu, 18 Nov 2004 02:33:53 +0100, Ziga Mahkovec
<ziga.mahkovec@xxxxxxxx> wrote:
> On Wed, 2004-11-17 at 21:28 +0100, Arjan van de Ven wrote:
> > another interesting test might be the following:
> > disable readahead (both services), store the attached file as /tmp/files
> > and put the following near the top of /etc/rc.sysinit:
> > /usr/sbin/readahead `/bin/cat /tmp/files`
>
> I had to move it a bit further down so it gets picked up by top (which
> in turn requires /proc):
>
> --- /etc/rc.sysinit.orig
> +++ /etc/rc.sysinit
> @@ -26,8 +26,13 @@
> mount -n -t proc /proc /proc
> [ -d /proc/bus/usb ] && mount -n -t usbfs /proc/bus/usb /proc/bus/usb
> mount -n -t sysfs /sys /sys >/dev/null 2>&1
>
> +# Log top output for boot analysis
> +/usr/local/sbin/bootop start
> +
> +/usr/sbin/readahead `/bin/cat /tmp/files`
> +
> . /etc/init.d/functions
>
> # Check SELinux status
> selinuxfs=`awk '/ selinuxfs / { print $2 }' /proc/mounts`
>
> The result:
> http://www.klika.si/ziga/bootchart/bootchart-diskless.png
>
> There's a 20 MB load of files in your readahead list and they are being
> read for 15 seconds. I guess a 26.60 MB/sec 'hdparm -t' suggests room
> for improvement? Note that this is on a 4200 RPM drive.
>
>
>
> --
> Ziga
>
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>
