I would not change the TCPWINDOWSIZE for this client - 63 is what we recommend for this platform.
The trace you sent indicates a large percentage of time being spent (97%) in the process dirs category. This category represents the amount of time spent inspecting directories and files before any backups occur. Journaling in this case definitely would help reduce the maount of time for the backup. Additional questions:
1. Are there any "deep" directory structures that have recently
been introduced on the system?
2. Have there recently been any new applications added to the box
that have added substantially to the number of files on the box?Look into journaling - it will definitely help.
At 08:43 PM 6/3/2003 +0200, you wrote:
You may want to change your TCPWindowSize from 63 to 1024
----- Original Message ----- From: "David Rigaudiere" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> 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 -+- [EMAIL PROTECTED] -+- 01.5621.7802
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Money is not the root of all evil - full backups are.
Isn't there considerable irony in conservatives persistently trying to thwart conservation?
