That's true but not recommended. You see, if your cache is significantly
higher than the 5000 default, ovwdb will use more CPU and take longer to
initialize. It allocates more cache when required, and then copies the all
the old objects into the new cache before destroying the old one. And it
may have to do this several times if you set the size to zero. Yes, it
works but most folks don't like the overhead or the time penalty for
complete initialization. So you save cycles by estimating the correct cache
size for him. How many times has someone complained on this forum about
his NetView being slow and then reported that raising the cache size fixed
his problem? When your estimate is too low, it builds the cache in the
same fashion as it does when you tell it to use zero.
James Shanks
Tivoli (NetView for UNIX) L3 Support
"MENEZES, ALAIN" <a.menezes@ASLK-CGER.BE> on 05/20/99 12:39:08 PM
Please respond to Discussion of IBM NetView and POLYCENTER Manager on
NetView <NV-L@UCSBVM.UCSB.EDU>
To: NV-L@UCSBVM.UCSB.EDU
cc: (bcc: James Shanks/Tivoli Systems)
Subject: Re: ovwdb - high CPU
This works fine ...
A little addition : when you configure a cache size 0, ovwdb can use as
much as it needs for its cache !
Thanks again
---------------------
Alain Menezes
ASLK-CGER Services GIE Tel.: +32 2 228.55.74
Rue Foss
é-aux-Loups, 48 Fax.: +32 2
228.83.69
1000 Bruxelles Email:
a.menezes@aslk-cger.be
> -----Original Message-----
> From: James Shanks [SMTP:James_Shanks@TIVOLI.COM]
> Sent: jeudi 20 mai 1999 17:40
> To: NV-L@UCSBVM.UCSB.EDU
> Subject: Re: ovwdb - high CPU
>
> Do ovobjprint -S and look at the number of objects. Then check the
> ovwdb
> cache size (ps -ef | grep ovwdb and look at the -n value). Is the
> cache
> size at least 20 per cent bigger? If not, use the Configure menu in
> the
> Tivoli GUI to make it that way. Then restart the daemons and see what
> happens.
>
> James Shanks
> Tivoli (NetView for UNIX) L3 Support
>
>
>
> "MENEZES, ALAIN" <a.menezes@ASLK-CGER.BE> on 05/20/99 11:26:03 AM
>
> Please respond to Discussion of IBM NetView and POLYCENTER Manager on
> NetView <NV-L@UCSBVM.UCSB.EDU>
>
> To: NV-L@UCSBVM.UCSB.EDU
> cc: (bcc: James Shanks/Tivoli Systems)
> Subject: ovwdb - high CPU
>
>
>
>
>
> Hi all,
>
> I've copied a NetView DB from one server to another (tar, reset_ci)
> both
> on the same subnet. Everything seems fine except that the ovwdb
> process
> uses an average 70% of CPU ... At first I thought the db was
> synchronizing, but the transfer has been done 7 days ago !!!
>
> Could anyone help me investigate the problem ?
>
> Thanks.
>
> Al
> ---------------------
> Alain Menezes
> ASLK-CGER Services GIE Tel.: +32 2 228.55.74
> Rue Foss << File: ATT04852.txt >>
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