What you might want to do is enable journal based backups on the client,
this usually speeds up things a lot. On nodes with lot of small files,
finding the files that need backing-up is usually the bottleneck....
--
Remco
On Tue, 3 Jun 2003 20:43:42 +0200
Alan Whitmore <whitmora AT SAOL DOT COM> wrote:
> You may want to change your TCPWindowSize from 63 to 1024
>
> ----- Original Message -----
> From: "David Rigaudiere" <david.rigaudiere AT FR.ABNAMRO DOT COM>
> To: <ADSM-L AT VM.MARIST DOT EDU>
> Sent: Monday, May 26, 2003 3:36 PM
> Subject: Node very very slow for incremental backup
>
>
> Hi *SMers,
> I have a probleme whit a node.
>
> Client 4.2.1.15 WinNT
> Server 5.1.6.3 AIX
>
> This node is very very slow to backups.
> 14H for less 6GB !! (1H is a normal backup time)
>
> The sysadmins said "no change on this node"
>
> I can't find where is the probleme, the node
> spent a lot of time to browse files and directories.
>
> A performance analyse when node is backuping does not
> show a bottleneck (memory, CPU, I/O ...)
> I tested a selective or big restore, without problem.
> (Data transfer rate: 10,000 to 12,000 KB/sec)
>
> Maybee I must install journal based backup but "yesterday"
> it worked perfectly without it...
>
> you're my only hope, do you have an idea ?
>
>
> dsm.opt :
> =========
>
> TCPWindowSize 63
> TCPBuffSize 31
> TCPNodelay YES
> SubDir YES
> Compression YES
> CompressAlways NO
> SchedMode Polling * (behind Firewall)
>
>
>
>
> It is a session report :
> ========================
>
> Total number of objects inspected: 192,386
> Total number of objects backed up: 2,221
> Total number of objects updated: 8
> Total number of objects rebound: 0
> Total number of objects deleted: 0
> Total number of objects expired: 523
> Total number of objects failed: 0
> Total number of bytes transferred: 5.89 GB
> Data transfer time: 1,416.29 sec
> Network data transfer rate: 4,362.30 KB/sec
> Aggregate data transfer rate: 119.69 KB/sec
> Objects compressed by: 15%
> Elapsed processing time: 14:20:17
>
>
>
>
> and a trace report :
> ====================
>
> Section Total Time(sec) Average Time(msec) Frequency used
> ==================================================================
> Client Setup 0.344 344.0 1
> Process Dirs 50292.881 2250.6 22346
> Solve Tree 0.000 0.0 0
> Compute 2.677 0.0 304175
> Transaction 46.145 0.0 938009
> BeginTxn Verb 0.047 0.1 508
> File I/O 164.261 0.7 241799
> Compression 372.440 2.3 164443
> Encryption 0.000 0.0 0
> Delta 0.000 0.0 0
> Data Verb 0.297 8.3 36
> Confirm Verb 0.297 8.3 36
> EndTxn Verb 541.249 1065.5 508
> Client Cleanup 2.735 2735.0 1
>
>
>
>
> --
> David Rigaudiere -+- Administration TSM -+-
> Paris -+- 40, rue de Courcelles -+- 4e itage -+-
> david.rigaudiere AT fr.abnamro DOT com -+- 01.5621.7802
>
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