On Sat, Aug 25, 2007 at 08:37:33AM -0500, Neil Gunton wrote:
I'm curious as to whether anyone has experience of software RAID in
Linux giving better overall performance on RAID10 than a RAID card such
as the Adaptec 2015S.
Server: Dual Opteron 265, 1.8GHz, i.e. 4 cores total, 4GB RAM,
On Sun, Aug 26, 2007 at 02:01:24AM -0400, Lennart Sorensen wrote:
Linux software raid (at least for raid 0 and 1 and combinations) is
often faster than what a hardware raid card can do, and almost certainly
better than what any fakeraid pulls off (since their drivers are often
crap at doing
Lennart Sorensen wrote:
If you have a fast cpu and you aren't using it for anything else (like
is often the case on a file server) and if you don't cause your pci bus
to be saturated, then software raid will probably be faster than
hardware raid in general.
Interesting stuff. So how do you
Hi Neil (2007.08.26_16:00:10_+0200)
I guess I will try and do a test with bonnie++ using both the hardware
and software RAID... will that be a reasonable test of the differences?
I've had a *bad* experince with hardware RAID...
On Sun, Aug 26, 2007 at 01:15:00PM +, Douglas A. Tutty wrote:
If the raid card was PCI-e, would it matter?
Certainly better than plain PCI. More bandwidth.
Worst case for the bus would be data to and from the drive's cache. For
SATA-II, that's 300 MB/s. So to write to two drives at
On Sun, Aug 26, 2007 at 09:00:10AM -0500, Neil Gunton wrote:
Interesting stuff. So how do you test your pci bus saturation?
I just figure it out by the numbers. Maximum on plain PCI is 33MHz x
32bit = 132MB/s. There is a bit of overhead so expect maybe 100MB/s
actual throughput. 66MHz pci
Lennart Sorensen wrote:
Linux software raid (at least for raid 0 and 1 and combinations) is
often faster than what a hardware raid card can do, and almost certainly
better than what any fakeraid pulls off (since their drivers are often
crap at doing the raid in software). raid 5 on the other
On Sun, Aug 26, 2007 at 09:46:26AM -0500, Neil Gunton wrote:
I guess the reason the YouTube guys used hardware RAID 1 and then put
software RAID 0 on top of that is that this means only sending the data
once, but with the kernel doing the striping you get improved
parallelization by seeing
On Sat, Aug 25, 2007 at 09:58:46AM -0400, Chris Ahlstrom wrote:
Is there any way to list all the dependencies of a package, or do a
manual verification of the web of dependencies? The Examine/!Apply in
aptitude is helpful.
apt-cache show packagename
dpkg --info package.deb
To see what files
Lennart Sorensen wrote:
SCSI has no purpose to me anymore. SATA or SAS is the only type of
drive I will consider for use. SAS is really quite impresive, although
I tend to just use SATA for what I do. I don't run servers in my
current job (someone elses job, and they do use SAS drives).
* Lennart Sorensen [EMAIL PROTECTED] [2007-08-26 10:55:37 -0400]:
apt-cache show packagename dpkg --info package.deb
To see what files a package is using: dpkg -L packagename
To see what package owns a file: dpkg -S /path/to/filename
Thanks!
--
Tux rox!
--
To UNSUBSCRIBE, email to
I am using oo 2.0.4 and linux 2.6.18-4-amd64. How do I
upgrade open office without pulling everything else along
with it?
Thanks, Don
On Sat, 25 Aug 2007, Michael wrote:
Date: Sat, 25 Aug 2007 22:12:32 +0200
From: Michael [EMAIL PROTECTED]
To: debian-amd64@lists.debian.org
Subject: Re:
Looks like gnash works now at least for youtube stuff.
(Still not for myspace.)
Otherwise you can play flash flv files externally with vlc plugin.
# Machine: x86_64
# Kernel: Linux 2.6.22-rc5-amd64 (custom)
# Debian GNU/Linux lenny/sid
# Installed:
libc6 2.6.1-1
gnash
Aptitude has nice scenario resolvers.
It looks odd to someone not used to ncurses GUI and admittedly it's very
special.
But when it comes to difficult problems where you need intelligence and details
there's probably nothing better, besides the apt commandline tools and dpkg
itself.
It's
Michael, thanks very much. I have only used apt-*
previously, I will check out aptitude. --Don
On Sun, 26 Aug 2007, Michael wrote:
Aptitude has nice scenario resolvers.
It looks odd to someone not used to ncurses GUI and admittedly it's very
special.
But when it comes to difficult
On 08/25/07 01:22:50PM +0200, Michael wrote:
Thanks Lennart, thanks Jim, for the good points.
I think i can accept the matter of facts ;)
It's generally a great fun to read your postings.
Just let me say thx here for sharing your insight.
That should apply to all those real freaks on
On Sun, Aug 26, 2007 at 01:12:26PM -0500, Don Montgomery wrote:
Michael, thanks very much. I have only used apt-*
previously, I will check out aptitude. --Don
WARNING:
aptitude keeps track of which packages you requested explicitly, and
which were only installed to satisfy a dependency.
Just to avoid confusion...cpuset seems to be the kernel thing, and taskset is
the related userspace tool ?
What is an 'optical imbalance'?
If one pane of the load-monitor is green and the other is black ;)
It looks like it's not 'balanced' but you really clarified that issue now.
--
To
On Sun, 26 Aug 2007, [EMAIL PROTECTED] wrote:
On Sun, Aug 26, 2007 at 01:12:26PM -0500, Don Montgomery wrote:
Michael, thanks very much. I have only used apt-*
previously, I will check out aptitude. --Don
WARNING:
aptitude keeps track of which packages you requested explicitly, and
which
So, if I have that right, I need to keep a close eye on
what aptitude offers to uninstall, if I previously used
'apt-get install package' extensively?
You always need to have a close eye on packages being additionally uninstalled.
I can abort, and use aptitude to install/reinstall said
On Sun, Aug 26, 2007 at 09:59:47AM -0500, Neil Gunton wrote:
Interesting! Unfortunately, this is an existing server, it's all I've
got and I have to make the best of it. I would certainly be willing to
ditch the Adaptec RAID card if it helped improve things for software
RAID. I vaguely know
On 08/26/07 11:26:27PM +0200, Michael wrote:
Just to avoid confusion...cpuset seems to be the kernel thing, and taskset is
the related userspace tool ?
Yes taskset is the userland tool for setting CPU affinity but it's only
for setting CPU affinity while cpusets also restrict the nodes
On Sun, Aug 26, 2007 at 10:42:40AM -0400, Lennart Sorensen wrote:
I just figure it out by the numbers. Maximum on plain PCI is 33MHz x
32bit = 132MB/s. There is a bit of overhead so expect maybe 100MB/s
actual throughput. 66MHz pci would double that, 64bit PCI would double
it too, and PCI-X
Googling for a solution, the only one seems to
be to buy a partitioning proprietary software that knows how to resize
NTFS partitions with Vista on it. Has anybody been successful resizing
such a partition to create space for a dual boot system?
Dear Seb,
This past spring I bought a Dell
Hi,
when I try to start xsane I get the following erroremessage.
GdkPixbuf-WARNING **: Error loading XPM image loader: Bildlader-Modul konnte
nicht geladen
werden: /usr/lib32/gtk-2.0/2.10.0/loaders/libpixbufloader-xpm.so:
/usr/lib32/gtk-2.0/2.10.0/loaders/libpixbufloader-xpm.so:
wrong ELF
25 matches
Mail list logo
