Anonymous_User Absent Member.
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Cache buffer memory decreased with 50% after nightly backup

We just upgraded from NW60 to NW65.

Now I see (in Monitor / System Resources) that after the nightly backup
that Cache buffer memory has been dropped (on our Backup Media
server) from 60% to 30% and then most of the memory is the "Miscellaneous
memory" (System Resources in Monitor). That does not seem to be right is
it? In NW60 this did not happen.

The 2nd server that is being backed up through an Agent does not have
this symptom.

Both servers are patched up to NW65 Sp5 and NW65os5a. We use Backup Exec
9.0 version 4202. The server is an Compaq ML350G3 with internal AIT tape
drive.

Frank




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11 Replies
Anonymous_User Absent Member.
Absent Member.

Re: Cache buffer memory decreased with 50% after nightly backup

6.5 definitely uses more memory -- how much memory is installed on this
server?


--
Barry Schnur
Novell Support Connection Volunteer Sysop
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Anonymous_User Absent Member.
Absent Member.

Re: Cache buffer memory decreased with 50% after nightly backup

3 Gbit of memory is installed on the server


> 6.5 definitely uses more memory -- how much memory is installed on this
> server?
>
>
> --
> Barry Schnur
> Novell Support Connection Volunteer Sysop


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Anonymous_User Absent Member.
Absent Member.

Re: Cache buffer memory decreased with 50% after nightly backup

OK -- plenty of RAM installed, does the memory 'return' to being
available later, or is it continually 'draining' out of cache buffer
memory.



--
Barry Schnur
Novell Support Connection Volunteer Sysop
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Anonymous_User Absent Member.
Absent Member.

Re: Cache buffer memory decreased with 50% after nightly backup

I mean 3 gigabyte

> 3 Gbit of memory is installed on the server
>
>
> > 6.5 definitely uses more memory -- how much memory is installed on

this
> > server?
> >
> >
> > --
> > Barry Schnur
> > Novell Support Connection Volunteer Sysop

>


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Anonymous_User Absent Member.
Absent Member.

Re: Cache buffer memory decreased with 50% after nightly backup

When a backup is done on Friday night and I look on Sunday for the amount
of cache buffers I see that the memory is not returned yet. So it looks
like the server is continually 'draining' out of cache buffer memory.
As a precaution I restart the server every morning to get the cache
buffers available again.

Frank


> OK -- plenty of RAM installed, does the memory 'return' to being
> available later, or is it continually 'draining' out of cache buffer
> memory.
>
>
>
> --
> Barry Schnur
> Novell Support Connection Volunteer Sysop


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Anonymous_User Absent Member.
Absent Member.

Re: Cache buffer memory decreased with 50% after nightly backup

You definitely shouldn't need to restart daily -- that can cause other
problems. Can you let it run without a restart a few days to see if
the 'draining buffers' gets worse on the subsequent days?


> When a backup is done on Friday night and I look on Sunday for the amount
> of cache buffers I see that the memory is not returned yet. So it looks
> like the server is continually 'draining' out of cache buffer memory.
> As a precaution I restart the server every morning to get the cache
> buffers available again.
>



--
Barry Schnur
Novell Support Connection Volunteer Sysop
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Anonymous_User Absent Member.
Absent Member.

Re: Cache buffer memory decreased with 50% after nightly backup

Hi,

try to limit the cache memory from tsafs.nlm by changing the load statement
to

tsafs.nlm /NoCachingMode (for nothing, mostly faster on incremental backups)
or
tsafs.nlm //CacheMemoryThreshold=1 (1 = 1 % and so on)

See also TID:
http://support.novell.com/cgi-bin/search/searchtid.cgi?10091980.htm

Cheers
Andreas
--
http://www.eckertweb.de

<f.velpen@chello.nl> schrieb im Newsbeitrag
news:vBqrg.3687$6c7.3158@prv-forum2.provo.novell.com...
> We just upgraded from NW60 to NW65.
>
> Now I see (in Monitor / System Resources) that after the nightly backup
> that Cache buffer memory has been dropped (on our Backup Media
> server) from 60% to 30% and then most of the memory is the "Miscellaneous
> memory" (System Resources in Monitor). That does not seem to be right is
> it? In NW60 this did not happen.
>
> The 2nd server that is being backed up through an Agent does not have
> this symptom.
>
> Both servers are patched up to NW65 Sp5 and NW65os5a. We use Backup Exec
> 9.0 version 4202. The server is an Compaq ML350G3 with internal AIT tape
> drive.
>
> Frank
>
>
>
>



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Anonymous_User Absent Member.
Absent Member.

Re: Cache buffer memory decreased with 50% after nightly backup

oops, pls only one / not // on tsafs.nlm /CacheMemoryThreshold=1 (1 = 1 %
and so on)

"Andreas Eckert" <andreas_no-spam_@eckert_no-spam_web.de> schrieb im
Newsbeitrag news:ZMasg.4572$6c7.1946@prv-forum2.provo.novell.com...
> Hi,
>
> try to limit the cache memory from tsafs.nlm by changing the load
> statement to
>
> tsafs.nlm /NoCachingMode (for nothing, mostly faster on incremental
> backups)
> or
> tsafs.nlm //CacheMemoryThreshold=1 (1 = 1 % and so on)
>
> See also TID:
> http://support.novell.com/cgi-bin/search/searchtid.cgi?10091980.htm
>
> Cheers
> Andreas
> --
> http://www.eckertweb.de
>
> <f.velpen@chello.nl> schrieb im Newsbeitrag
> news:vBqrg.3687$6c7.3158@prv-forum2.provo.novell.com...
>> We just upgraded from NW60 to NW65.
>>
>> Now I see (in Monitor / System Resources) that after the nightly backup
>> that Cache buffer memory has been dropped (on our Backup Media
>> server) from 60% to 30% and then most of the memory is the "Miscellaneous
>> memory" (System Resources in Monitor). That does not seem to be right is
>> it? In NW60 this did not happen.
>>
>> The 2nd server that is being backed up through an Agent does not have
>> this symptom.
>>
>> Both servers are patched up to NW65 Sp5 and NW65os5a. We use Backup Exec
>> 9.0 version 4202. The server is an Compaq ML350G3 with internal AIT tape
>> drive.
>>
>> Frank
>>
>>
>>
>>

>
>



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Anonymous_User Absent Member.
Absent Member.

Re: Cache buffer memory decreased with 50% after nightly backup

On Sun, 09 Jul 2006 06:38:36 -0700, <f.velpen@chello.nl> wrote:

>> 3 Gbit of memory is installed on the server

> I mean 3 gigabyte


I was hoping that was just a slip of the tongue...else you'd have 1/8 of
the memory we were expecting 😉

Barry's usually pretty good at helping, so I'll leave you in his hands.

/dps

--
Using Opera's revolutionary e-mail client: http://www.opera.com/m2/
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Anonymous_User Absent Member.
Absent Member.

Cache buffer memory decreased with 50% after nightly backup

I would start by upgrading to at least Backup Exec 9.1, preferred 9.2.

If I remember correctly BE 9.0 is not supported and reportedly had issues
on netware 6.5.

that would be a start, I have about 70 6.5 sp3-5 servers running BE 9.1.x
or 9.2.x and dont have this issue.

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Anonymous_User Absent Member.
Absent Member.

Cache buffer memory decreased with 50% after nightly backup

I installed Backup Exec 9.2 on the media server and an 9.2 Agent on the
other server (revision number 1391).

Now I get an error message on the Media Server:
Could not connect to ACTUA_SERVER1.NetWare File System/ACTUA_SERVER1/PRO-
GRAMMATUUR:. The login credentials may be incorrect. All selections for
this device will be skipped

The secondary server however is is backed up correctly through the Agent.

The memory problem seems to be solved.

Both servers are running NW6.5 SP5/NW65os5a and TsaUP19.

Frank




> I would start by upgrading to at least Backup Exec 9.1, preferred 9.2.
>
> If I remember correctly BE 9.0 is not supported and reportedly had

issues
> on netware 6.5.
>
> that would be a start, I have about 70 6.5 sp3-5 servers running BE

9.1.x
> or 9.2.x and dont have this issue.
>


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