ADSM-L

Re: Performance: Process Dirs

2000-07-21 12:27:52
Subject: Re: Performance: Process Dirs
From: "Thomas A. La Porte" <tlaporte AT ANIM.DREAMWORKS DOT COM>
Date: Fri, 21 Jul 2000 09:27:52 -0700
It is my understanding that the "Process Dirs" indicates the time
ADSM spends examining the objects in the filespace in an effort
to determine those objects that must be backed up. I would guess
that your 1 million files are arrayed across approximately 99,543
directories.

The only way I know of to solve this "problem" is to break it
down into smaller problems, either by creating smaller
filespaces on the client, or breaking them up using the
VIRTUALMOUNTPOINT option to create virtual filespaces.

I believe that with the 3.7 NT client, the new option
"RESOURCEUTILIZATION" that allows you to multiplex your client
sessions may be useful, however, that may also require a 3.7
server.

 - Tom

Thomas A. La Porte
DreamWorks Feature Animation
tlaporte AT anim.dreamworks DOT com

On Fri, 21 Jul 2000, Dieter Herzog wrote:

>Hi
>
> We have problems to backup (incremental
> procedure)a NT-System (100 GB, 1 Million of
> files).
> ADSM server Version 3.1.2.5 (OS/390 R2.8)
> ADSM Client Version 3.7
>
> We activated a client detail trace
> during an incremental backup and the trace
> information is:
>
> Final Detailed Instrumentation statistics
>
>Elapsed time: 16884.969 s
>Section      Total Time(sec)  Average Time(msec)  Frequency used
>
>------------------------------------------------------------------
>Client Setup        4.109         4109.0              1
>Process Dirs    16613.330          166.9          99543
>Solve Tree          0.000            0.0              0
>Compute             0.200            0.0          12989
>Transaction       260.754            1.9         138849
>BeginTxn Verb       0.000            0.0             31
>File I/O           30.766            3.8           8147
>Compression        64.004            4.9          12992
>Data Verb          22.931            4.5           5115
>Confirm Verb        0.000            0.0              2
>EndTxn Verb        19.281          622.0             31
>Client Cleanup      1.422         1422.0              1
>
>
> The ADSM client is spending the bulk of its time
> during the "Process Dirs" process.
> What is it doing ?
> Suggestion to solve this problem ?
>
> Thanks in advance
> Dieter
>
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