ADSM-L

Re: ADSM client "sleeping" during backup

1997-03-03 04:13:27
Subject: Re: ADSM client "sleeping" during backup
From: Peter Duempert <c0034003 AT RZIBM214.RZ.TU-BS DOT DE>
Date: Mon, 3 Mar 1997 10:13:27 +0100
Hi folks,
   we experienced a similar behaviour, which was due to processing
thousand's of links in a directory, which the WWW-harvester had
produced. It took hours and we aborted the run. So check if there is a
directory with a huge number of entries in it and take some action on it.
Btw: we tried with Exclude, but this didn't work 
> >----------
> >From:  Richard Sims[SMTP:rbs AT bu DOT edu]
> >Sent:  Friday, February 28, 1997 10:37 AM
> >To:    ADSM-L AT vm.marist DOT edu
> >Subject:       Re: ADSM client "sleeping" during backup
> >
> >>     From 20:53 until 3:49, we got nothing done. But MeasureWare shows that
> >>     dsmc cpu utilization was nearly 100% during that time. (There is other
> >>     work running on the machine, after all!)
> >>
> >>     This happens every night on this system.
> >>
> >>     Any ideas about what could be causing this aberrant behavior?
> >
> >This kind of behavior during backup is typically a function of the structure
> >and
> >content of the client file system.  Remember that the client first asks the
> >server for the details on all relevant files previously backed up, and then
> >it is
> >up to the client to run through its file system comparing files against this
> >list
> >so as to determine if the file needs to be backed up.  If the dsmc is getting
> >mired in doing this, it's worth checking the file system for links and mounts
> >which may cause redundant/wasteful path traversals.  If you know when this
> >started
> >you can try to identify any system change which might contribute to this.
> >In any case it's worth looking over any client's file system structure from
> >time
> >to time to identify irregularities which can throw off any function which is
> >walking the file system.             Richard Sims, Boston University OIT
> >
> 

-- 
MfG / Ciao         - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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Peter Dümpert                                   Email: p.duempert AT tu-bs DOT 
de
Rechenzentrum der Technischen Universität       Fax  : ++49/531/391-5549
D 38092 Braunschweig                            Tel  : ++49/531/391-5535
 
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