Hi all,
I haven't yet solved my performance problem but I
wanted to share the following URL with anybody who is experiencing the
same problem as me:
http://www.redhat.com/magazine/001nov04/features/vm/
It introduces a lot of Linux's virtual memory configuration
parameters (/proc/sys/vm/
On Tue, 20 Jun 2006 at 5:54pm, Cyrille Bollu wrote
There are ext3 mount options you can play with, as well as options in
the
RAID controller. All of that can be non-destructive. There are also
some
mke2fs options one can play with.
You're thinking about "noatime", aren't you?
noatime c
[EMAIL PROTECTED] a écrit sur 20/06/2006
15:39:01 :
>
> There are ext3 mount options you can play with, as well as options
in the
> RAID controller. All of that can be non-destructive. There
are also some
> mke2fs options one can play with.
You're thinking about "noatime", aren't
you?
What
On Tue, 20 Jun 2006 at 2:59pm, Cyrille Bollu wrote
Joshua Baker-LePain <[EMAIL PROTECTED]> a écrit sur 20/06/2006 14:07:58 :
How much benchmarking/optimization have you done with the array?
Almost none... That's the first time I'm working with such a big
filesystem.
I ran "hdparm -t -T" wh
Joshua Baker-LePain <[EMAIL PROTECTED]> a écrit
sur 20/06/2006 14:07:58 :
> On Tue, 20 Jun 2006 at 9:47am, Cyrille Bollu wrote
>
> > The server is a Dell PowerEdge 2850 with 2 Intel Xeon 3GHz processors
and
> > 8GB RAM.
> >
> > I have one big RAID5 array made of 6 Seagate Cheetah ST337LC
10K
On Tue, 20 Jun 2006 at 9:47am, Cyrille Bollu wrote
The server is a Dell PowerEdge 2850 with 2 Intel Xeon 3GHz processors and
8GB RAM.
I have one big RAID5 array made of 6 Seagate Cheetah ST337LC 10Krpm
300GB
(http://support.euro.dell.com/support/edocs/storage/p76311sc/intro.htm).
All connec
Joshua Baker-LePain <[EMAIL PROTECTED]> a écrit
sur 19/06/2006 16:59:58 :
> On Mon, 19 Jun 2006 at 4:31pm, Cyrille Bollu wrote
>
> > But, when we purchased the backup server I agreed to follow my
boss'
> > solution (it's always him you known ;-p) to buy that cheaper
server with
> > maximum 1,5TB
[EMAIL PROTECTED] a écrit sur 19/06/2006
18:09:58 :
> >
> > Actually with AMANDA it might be a really good idea esp. with
the faster
> > drives because there's no way you can keep them streaming over
the network.
>
> Erm, I think you missed the bit where he said he's only backing up
disks
> l
--On June 19, 2006 12:09:58 PM -0400 Joshua Baker-LePain <[EMAIL PROTECTED]>
wrote:
Erm, I think you missed the bit where he said he's only backing up disks
local to the backup server (and thus the tape drive). No network
involved.
You're right, I did, my bad! :D Going back to my hole n
On Mon, 19 Jun 2006 at 10:06am, Michael Loftis wrote
--On June 19, 2006 10:59:58 AM -0400 Joshua Baker-LePain <[EMAIL PROTECTED]>
wrote:
On Mon, 19 Jun 2006 at 4:31pm, Cyrille Bollu wrote
In a configuration where amanda only backup local (SCSI) drives, are
there any benefits from using a ho
--On June 19, 2006 10:59:58 AM -0400 Joshua Baker-LePain <[EMAIL PROTECTED]>
wrote:
On Mon, 19 Jun 2006 at 4:31pm, Cyrille Bollu wrote
But, when we purchased the backup server I agreed to follow my boss'
solution (it's always him you known ;-p) to buy that cheaper server with
maximum 1,5TB
On Mon, 19 Jun 2006 at 4:31pm, Cyrille Bollu wrote
But, when we purchased the backup server I agreed to follow my boss'
solution (it's always him you known ;-p) to buy that cheaper server with
maximum 1,5TB RAID5 (6*300GB) instead of that nice DAS with up to 3,9TB
RAID5. So, to save space I crea
> >
> > What a poor hardware configuration I have here
>
> Indeed. What *is* your SCSI config. In general, you probably
want the
> tape drive at least on its own channel, if not its own card.
>
It is BAD!
OK at least my tape drive is on its own card.
But, when we purchased the backup s
On Mon, Jun 19, 2006 at 08:43:04AM -0400, Joshua Baker-LePain wrote:
> On Mon, 19 Jun 2006 at 2:40pm, Cyrille Bollu wrote
>
> >Does anybody knows about the --with-maxtapeblocksize used by RedHat ES
> >3.3?
>
> I doubt it's used, but it's easy enough to find out -- download the SRPM
> and look in
On Mon, 19 Jun 2006 at 10:03am, Jon LaBadie wrote
I used stinit to specify block sizes for my "new to me" LTO-1.
Some of the resulting devices at 32K, others at 128., or 256K.
Surprise to me, when I ran amtapetype, specifying a matching
blocksize, the transfer rate was slower than at 32K. About
On Mon, 19 Jun 2006 at 3:59pm, Cyrille Bollu wrote
Wow...That's better:
[EMAIL PROTECTED] cron.d]# time dd if=/dev/zero of=/dev/nst0 bs=2048k
^^^
Great idea! ;) (cf my previous email)
count=1024
1024+0 records in
1024+0 records out
real0m27
On Mon, 19 Jun 2006 at 3:56pm, Cyrille Bollu wrote
ouch I just ran the test and the speed sank to about 6MB/s...
I guess I'm stretching another component...
What SCSI card do you have the drive hooked to? Is (are) your hard
drive(s) on the same card and/or the same chain? You may want to t
out 6MB/s...
I guess I'm stretching another component...
grrr...
Cyrille Bollu <[EMAIL PROTECTED]>
Envoyé par : [EMAIL PROTECTED]
19/06/2006 14:59
A
Joshua Baker-LePain
<[EMAIL PROTECTED]>
cc
amanda-users@amanda.org
Objet
Re: tar's default block size
& sho
ain <[EMAIL PROTECTED]>
19/06/2006 14:43
A
Cyrille Bollu <[EMAIL PROTECTED]>
cc
amanda-users@amanda.org
Objet
Re: tar's default block size
& shoe-shinning
On Mon, 19 Jun 2006 at 2:40pm, Cyrille Bollu wrote
> Does anybody knows about the --with-maxta
On Mon, Jun 19, 2006 at 02:59:16PM +0200, Cyrille Bollu enlightened us:
> indeed...
>
> Thank you for your answers Joshua, I will try a "dd" with bs=2048k. Then
> probably I will compile amanda...
>
> Bouh I don't like to do that in a production environment
>
Understandable. I have some ti
llu <[EMAIL PROTECTED]>
cc
amanda-users@amanda.org
Objet
Re: tar's default block size
& shoe-shinning
On Mon, 19 Jun 2006 at 2:40pm, Cyrille Bollu wrote
> Does anybody knows about the --with-maxtapeblocksize used by RedHat
ES
> 3.3?
I doubt it's used, but it'
On 2006-06-19 14:43, Joshua Baker-LePain wrote:
On Mon, 19 Jun 2006 at 2:40pm, Cyrille Bollu wrote
Does anybody knows about the --with-maxtapeblocksize used by RedHat ES
3.3?
I doubt it's used, but it's easy enough to find out -- download the SRPM
and look in the spec file.
or: $ amadmi
On Mon, 19 Jun 2006 at 2:40pm, Cyrille Bollu wrote
Does anybody knows about the --with-maxtapeblocksize used by RedHat ES
3.3?
I doubt it's used, but it's easy enough to find out -- download the SRPM
and look in the spec file.
--
Joshua Baker-LePain
Department of Biomedical Engineering
Duke
Does anybody knows about the --with-maxtapeblocksize
used by RedHat ES 3.3?
Cyrille
Joshua Baker-LePain <[EMAIL PROTECTED]>
Envoyé par : [EMAIL PROTECTED]
19/06/2006 11:02
A
Cyrille Bollu <[EMAIL PROTECTED]>
cc
amanda-users@amanda.org
Objet
Re: tar's default
On Mon, 19 Jun 2006 at 10:05am, Cyrille Bollu wrote
Could someone tell me if there are any possibilities to change the block
size tar is using when backuping with amanda?
I'm asking this because we have recently bought an IBM ULTRIUM-TD3 LTO3
drive here and Amanda reports an average write rate
Hi all,
Could someone tell me if there are any possibilities
to change the block size tar is using when backuping with amanda?
I'm asking this because we have recently
bought an IBM ULTRIUM-TD3 LTO3 drive here and Amanda reports an average
write rate of only 17MB/s (when the maximum speed should
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