Re: Cache Hit Percent below 90%
1999-07-30 11:08:36
How many pages allocated to the "Buffer Pool"? The Cache Hit is related
to its size.
Mauro
> There's 640 mb memory on the server.
> The available space for the db is 8000 mb.
> Page size: 4096.
> Total usable pages: 2048000
> Used pages: 1565443.
> Approx. amount of data being backed: 40GB
>
> Ciao Mauro asked:
>
> > Memory?
> > How much memory do you have and how big is the Buffer Pool?
> > How big the DB and how much is in use?
>
> From: Marita Gonsalves
> > Hello all,
> > I've run into a problem and I want to make sure that the
cause is
> not
> ADSM
> > before I involve anyone else on this. Background info: NT
4.0
> environment,
> > running ADSM server ver. 2 backing up 24 servers. Running
ADSM
> client
> ver.
> > 3 on 4 servers.
> >
> > I've noticed that the cahce hit pecrent keeps dropping
gradually
> over a
> > period of time. The only way I can fix this is stopping and
> starting
> the
> > ADSM server. I have increased database buffer pool, per the
ADSM
> manual
> > suggestion, from 512KB to 1014KB. The cache hit percent is
> currently
> at 77%
> > (I stopped and started the service 2days ago). The cache
wait pct
> is
> 0.
> > The total buffer requests are very high considering I just
reset
> the
> buffer
> > pool two days ago:114,983,514.
> >
> > When inventory expiration runs, I've noticed that it takes
> anywhere
> from 5 -
> > 8 hours to run. In the past it never took more than 1.5 - 2
hours
> to
> run.
> >
> > Another anomaly: scheduled backups start at 2 a.m. in the
morning.
> When I
> > come in at 8:30 a.m. one or two of the clients running ADSM
ver. 3
> client is
> > still in process. In the past, the backups were done by 6
a.m.
> No,
> data
> > has not increased. In fact, the summer is our slow time and
> backups
> should
> > be going a lot faster since the traffic on most of the
servers is
> limited.
> > School starts in two weeks and I shudder to think what it
will be
> like
> if I
> > don't find a fix for this problem.
> >
> > Can anyone tell me what the problem is? I want to be able to
> pre-empt
> any
> > problem before it gets out of control. I want to be sure
that
> this is
> not
> > an ADSM problem before I start looking at the network.
> >
> > Any suggestions would be greatly appreciated. Thanks,
> >
> > Marita Gonsalves
> > IS Consultant
> > Cary Academy
> > 919-677-1946 x4555
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