Ok, I figured it out. Since we use Qlogic branded adapters and QLA driver
instead of the QLC driver there was a setting we needed to change in
/kernel/drv/qla2300.conf. It is the equipment of the pci-max-read-request
variable in qlc.conf.
# PCI-X Maximum Memory Read Byte Count.
#Range: 0
> I'm watching the duplication job that the vault spawns to
> copy the backup from VTL to LTO3. For the bptm process that
> is doing the read from VTL:
>
> <2> io_init: buffer size for read is 64512
>
> Obviously, I want to use a high buffer size for reads, but I
> already have SIZE_DATA_BUFF
Marianu, Jonathan wrote:
> My recollection is that during duplication from VTL to tape , it uses the mpx
> originally set in the policy unless it is throttled down by the vault policy
> but you cant increase it. The MPX is what is so interesting to examine in
> truss because I observed that a
Ok, I think I might have discovered something key to my poor performance..
I'm watching the duplication job that the vault spawns to copy the backup from
VTL to LTO3. For the bptm process that is doing the read from VTL:
<2> io_init: buffer size for read is 64512
Obviously, I want to use a hi
Also, there are no lines in the bptm logfile showing
> "mpx_setup_restore_shm" for these PIDs...
>
> -devon
>
> ____________
>
> From: Mike Andres [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, November 21, 2007 9:49 AM
> To: Justin Piszcz
>
> "mpx_setup_restore_shm" for these PIDs...
>
> -devon
>
> ________
>
> From: Mike Andres [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, November 21, 2007 9:49 AM
> To: Justin Piszcz
> Cc: Peters, Devon C; VERITAS-BU@mailman.eng.auburn.edu
My recollection is that during duplication from VTL to tape , it uses
the mpx originally set in the policy unless it is throttled down by the
vault policy but you can't increase it. The MPX is what is so
interesting to examine in truss because I observed that any multiplexing
will impact the duplic
for these PIDs...
-devon
From: Mike Andres [mailto:[EMAIL PROTECTED]
Sent: Wednesday, November 21, 2007 9:49 AM
To: Justin Piszcz
Cc: Peters, Devon C; VERITAS-BU@mailman.eng.auburn.edu
Subject: RE: [Veritas-bu] T2000 vaulting performance with VTL/LTO3
Thanks.
Something you wrote didn't sound quite right.
Bpbkar writes to the child bptm using TCP sockets which is a bottleneck.
The child bptm process or processes, depending on MPX, write to shared
memory, The parent bptm reads from shared memory and writes it to the
tape.
I still use 5.1 so this may be
ED]
Sent: Wednesday, November 21, 2007 6:59 AM
To: Mike Andres
Cc: Peters, Devon C; VERITAS-BU@mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] T2000 vaulting performance with VTL/LTO3
Buffers in memory to disk would be dependent on how much cache the raid
controller has yeah?
Justin.
On Wed, 21 N
CTED]
Sent: Wed 11/21/2007 8:58 AM
To: Mike Andres
Cc: Peters, Devon C; VERITAS-BU@mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] T2000 vaulting performance with VTL/LTO3
Buffers in memory to disk would be dependent on how much cache the raid
controller has yeah?
Justin.
On Wed, 21 Nov 20
efinitively?
>
>
>
> From: [EMAIL PROTECTED] on behalf of Peters, Devon C
> Sent: Tue 11/20/2007 1:32 PM
> To: VERITAS-BU@mailman.eng.auburn.edu
> Subject: Re: [Veritas-bu] T2000 vaulting performance with VTL/LTO3
>
>
>
> Chris,
>
> To me it looks like there
--
Date: Fri, 16 Nov 2007 10:00:18 -0800
From: Chris_Millet <[EMAIL PROTECTED]>
Subject: [Veritas-bu] T2000 vaulting performance with VTL/LTO3
To: VERITAS-BU@mailman.eng.auburn.edu
Message-ID: <[EMAIL PROTECTED]>
I'm starting to experiment with the use of T2000 for med
<[EMAIL PROTECTED]>
Subject: [Veritas-bu] T2000 vaulting performance with VTL/LTO3
To: VERITAS-BU@mailman.eng.auburn.edu
Message-ID: <[EMAIL PROTECTED]>
I'm starting to experiment with the use of T2000 for media servers. The
backup server is a T2000 8 core, 18GB system. There is a
The MPX setting of the original backup can greatly influence the speed
of your duplications.
I'm not *telling* you to use a high mpx but it is something to consider
testing.
It is very interesting to open up two ssh sessions, put them side by
side and run a truss on both the reading and writin
-Original Message-
From: Andre Smith [mailto:[EMAIL PROTECTED]
Sent: Saturday, 17 November 2007 8:58 AM
To: VERITAS-BU@mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] T2000 vaulting performance with VTL/LTO3
Depending on how many streams and write drives are running
concurrently, check you
Chris,
Which version of Solaris are you using. You might have a look on the
following URL. There are some parameters to tune for the T2000.
http://www.sun.com/servers/coolthreads/tnb/parameters.jsp#2
Besides, what does the bptm logs say about the buffers? According to you
settings, you have only
illet
Sent: Friday, November 16, 2007 11:57 AM
To: VERITAS-BU@mailman.eng.auburn.edu
Subject: [Veritas-bu] T2000 vaulting performance with VTL/LTO3
Seems like that shouldn't be the case, but OK i'll try it. Our Qlogic rep states this
adapter should be fully capable of 380MB/sec, full d
No other activity on the server except for the read stream from VTL and the
write stream to LTO3. There are a couple GB allocated for shmmem.
+--
|This was sent by [EMAIL PROTECTED] via Backup Central.
|Forward SPAM to [EMAIL P
Depending on how many streams and write drives are running
concurrently, check your shared memory settings in /etc/system.
On Nov 16, 2007, at 1:00 PM, Chris_Millet <[EMAIL PROTECTED]
> wrote:
>
> I'm starting to experiment with the use of T2000 for media servers.
> The backup server is a
T2000 vaulting performance with VTL/LTO3
Seems like that shouldn't be the case, but OK i'll try it. Our Qlogic rep
states this adapter should be fully capable of 380MB/sec, full duplex, on both
ports, simultaneously. "best in industry" And the T2000 is no slouch
Seems like that shouldn't be the case, but OK i'll try it. Our Qlogic rep
states this adapter should be fully capable of 380MB/sec, full duplex, on both
ports, simultaneously. "best in industry" And the T2000 is no slouch in the
PCI-E department.
+---
nding" and the other "receiving" you will see better total
throughput.
Paul
--
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf
> Of Chris_Millet
> Sent: November 16, 2007 1:00 PM
> To: VERITAS-BU@mailman.eng.auburn.edu
&g
I'm starting to experiment with the use of T2000 for media servers. The backup
server is a T2000 8 core, 18GB system. There is a Qlogic QLE2462 PCI-E dual
port 4Gb adapter in the system that plugs into a Qlogic 5602 switch. From
there, one port is zoned to a EMC CDL 4400 (VTL) and a few HP L
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