On 04/08/10, Rory Campbell-Lange (rory AT campbell-lange DOT net) wrote:
> On 03/08/10, Dan Langille (dan AT langille DOT org) wrote:
> > On 8/3/2010 7:09 PM, Rory Campbell-Lange wrote:
>
> > > Yes, a batch insert is faster than a specfic insert, but the latter
> > > should be done at the "written-to-tape" transaction time, and could be
> > > done asynchronously, but in a transaction.
> >
> > So... don't use batch-insert. Go the single insert approach. I dare
> > you. ;)
>
> Yes, I'm trying! I'm trying to do it properly by recompiling debian
> stable backports and I'm running into library dependancy problems.
Done. I've recompiled with batch inserts set to off.
I tested spooling to see how this would work although it isn't strictly
necessary for my situation (a single server with AoE and internal
storage and a locally attached tape drive). The backup started running
off disk at around 100MB/s and then spooling at around 100MB/s. The disk
copy slowed down dramatically over the weekend due to contention due to
some external MD5 audits and rsync processes.
I'm now going to play with non-spooled backups and some options such as
noatime.
Build OS: x86_64-pc-linux-gnu debian 5.0.5
JobId: 1
Job: HAbkp.2010-08-06_15.46.23_03
Backup Level: Full
Client: "clwbackup-fd" 5.0.2 (28Apr10)
x86_64-pc-linux-gnu,debian,5.0.5
FileSet: "HAfileset" 2010-08-06 15:46:23
Pool: "HAPool" (From Job resource)
Catalog: "MyCatalog" (From Client resource)
Storage: "CLW_LTO4" (From Job resource)
Scheduled time: 06-Aug-2010 15:46:07
Start time: 06-Aug-2010 15:46:25
End time: 09-Aug-2010 18:23:16
Elapsed time: 3 days 2 hours 36 mins 51 secs
Priority: 10
FD Files Written: 7,706,717
SD Files Written: 7,706,717
FD Bytes Written: 7,337,839,018,613 (7.337 TB)
SD Bytes Written: 7,339,475,824,330 (7.339 TB)
Rate: 27317.7 KB/s
Software Compression: None
VSS: no
Encryption: no
Accurate: no
Volume name(s): HA-01|HA-02|HA-03|HA-04|HA-05|HA-06|HA-07
Volume Session Id: 1
Volume Session Time: 1281090914
Last Volume Bytes: 896,114,386,944 (896.1 GB)
Non-fatal FD errors: 0
SD Errors: 0
FD termination status: OK
SD termination status: OK
Termination: Backup OK
--
Rory Campbell-Lange
rory AT campbell-lange DOT net
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