Loads of responses......toomany people to thank.....but here they are !!!!!
Cheers
AndyT
PS.....I'm using Monitor as suggested by Alan.
From: <gwertz_at_BISYS-Plans.com>
To: Andrew Tolmie <Andrew.Tolmie_at_carltontv.co.uk>
Date: 19/11/99 13:53:38
Subject: Re: Monitoring Tools for DU4.0d
You could use top. If you are using X windows, there is also a package
called Performance Monitor that ships with DEC Unix. Do a man on pmgr.
From: "Rick Morrell" <rmorrell_at_uk.oracle.com>
To: "Andrew Tolmie" <Andrew.Tolmie_at_carltontv.co.uk>
Date: 19/11/99 14:05:56
Subject: Re: Monitoring Tools for DU4.0d
Have you tried vmstat.. it give you the following info:
>vmstat 1
Virtual Memory Statistics: (pagesize = 8192)
procs memory pages intr cpu
r w u act free wire fault cow zero react pin pout in sy cs us sy
id
5 155 33 11K 40K 11K 5M 1M 2M 412 933K 0 17 266 651 0 0
100
4 156 33 11K 40K 11K 147 14 85 0 11 0 315 1K 8K 0 3
97
3 157 33 11K 40K 11K 60 0 60 0 0 0 311 1K 8K 0 3
97
Cheers,
Rick.
From: <gwertz_at_BISYS-Plans.com>
To: "Andrew Tolmie" <Andrew.Tolmie_at_carltontv.co.uk>
Date: 19/11/99 14:41:31
Subject: Re: Monitoring Tools for DU4.0d
I never really pay attention to the memory numbers from top. Keep in mind
that it's shareware and all that that implies. I have seen top get the
amount of PHYSICAL memory wrong more than once!
From: <simon.millard_at_barclays.co.uk>
To: <Andrew.Tolmie_at_carltontv.co.uk>
Date: 19/11/99 13:57:39
Subject: RE: Monitoring Tools for DU4.0d
You can always install performance manager which is on the associated
products CD. Its X based.
Also, dxsysinfo gives you a basic outline. For text based, top is an
old favourite.
Simon.Millard_at_barclays.co.uk
Group Mail: Simon S.G. Millard
From: "Butcher, Steve" <Steve.Butcher_at_compaq.com>
To: 'Andrew Tolmie' <Andrew.Tolmie_at_carltontv.co.uk>
Date: 19/11/99 14:07:04
Subject: RE: Monitoring Tools for DU4.0d
Andrew,
Take a look at Performance Manager (setld subset name PMGRxxxx). You should
find it on the Associated Products Volume 1 CD that comes with the Operating
System CD.
Regards
Steve Butcher
From: "David Hull" <David_Hull_at_Jabil.com>
To: "'Andrew Tolmie '" <Andrew.Tolmie_at_carltontv.co.uk>
Date: 19/11/99 14:15:21
Subject: RE: Monitoring Tools for DU4.0d
If you have a 4.0F box to get the software from, I understand that the
Insight Manager agents work very well on 4.0D/E. Compaq does not officially
support it, though. You can get the exact info on how from the archives.
Cheers,
David Hull
From: "Jim Fitzmaurice" <jpfitz_at_fnal.gov>
To: "Andrew Tolmie" <Andrew.Tolmie_at_carltontv.co.uk>
Date: 19/11/99 14:32:21
Subject: RE: Monitoring Tools for DU4.0d
Andy,
I use BigBrother (
http://www.bb4.com). Its primary purpose in life is to
monitor and report via e-mail or pager when user configurable thresholds are
met. Out of the box it monitors cpu usage, with a couple of easily added
extensions, (found at
http://www.deadcat.net) it can also monitor swap space
and memory. With the "larrd" extention, (Load Average, Round Robin Database,
also at
http://www.deadcat.com) it can also be configured store data in a
database and to build graphs from that data. It is OSS so you can download
it and run it at no cost, and since it's Open Source you get the souce code
so you can modify it to your tastes if you so desire. If your worried about
support, it has a mailing list that is excellent. The three primary authors
of BB participate and answer questions daily. How many support packages from
commercial companies let you ask questions directly to the programmers?
Isn't the Open Source Software community wonderful? I am not affiliated with
BB in any way, but I use it, contibute to it, and believe it is one of the
finest monitoring packages available. (The memory monitoring extention at
http://www.deadcat.com for Tru64 4.0d and LINUX were contributed by me.)
Jim Fitzmaurice
jpfitz_at_fnal.gov
From: <alan_at_nabeth.cxo.dec.com>
To: Andrew Tolmie <Andrew.Tolmie_at_carltontv.co.uk>
Date: 19/11/99 18:13:43
Subject: Re: Monitoring Tools for DU4.0d
Well, the base system includes vmstat and iostat which
display the information you mentioned. There's a program
called Monitor on the Freeware CDROM and available from
gatekeeper.dec.com:/pub/DEC/monitor.alpha.tar.Z that can
display the data using curses or save it to a file for
later replay or analysis. Particular to memory usage is
vmubc, which I think provides a graphic display of how
the unified buffer cache is used. There's also a suite
of programs called collect that can produce graphs of
the data it collects.
From: <Philip.Ordinario_at_bmo.com>
To: Andrew Tolmie <Andrew.Tolmie_at_carltontv.co.uk>
Date: 19/11/99 15:03:33
Subject: Re: sorry guy's
Hi,
On Unix prompt, try 'vmstat 1 10'
This will provide you CPU and memory utilisation one per second for 10
seconds.
good luck.
AND A VERY LONG ONE FROM ALAN!!!!!
From: <alan_at_nabeth.cxo.dec.com>
To: Andrew Tolmie <Andrew.Tolmie_at_carltontv.co.uk>
Date: 19/11/99 18:59:04
Subject: Re: sorry guy's
re:
"top =3D 605m out of 1020m =20
pmgr =3D %3 available"
I don't even know what you're reading, much less whether it
is accurate. 1020 MB is not a likely amount of physical
memory, but it could be an amount of page/swap space available.
605 MB could be anything and without more context is useless.
Virtual and real memory is very fluid on most modern UNIX
systems. I think most, if not all modern systems, support
a unified buffer cache, that makes a significant portion
(if not all) of free memory available to the buffer cache.
Some vendors have even gone so far as to rewrite program
that used to sequentially process files with read or write
to use mmap, which makes file data look like normal user
space memory.
There was a time when all you needed to look at for memory
was the amount of free memory. Those days are long gone.
Large amounts of "free" memory may be used in file buffers,
which are easily returned for other use by invaliding the
cache blocks. The amount of free memory may look small,
but it is trival to shuffle it around among processes. On
the other hand, what is memory is in use may be dirty and
need to be written causing a heavy I/O updating files or
paging.
So the question is, what you trying to learn about your
system? If it is whether you need more memory or not,
look at how much you're paging. Look at the tuning guide
to see what the thresholds are for starting to actively
look for free pages by paging or swapping. Then see where
your amount of free memory is in relationship to those
thresholds. If above them and you don't seem to be paging
heavily, then you probably have enough memory for the
application load at the moment. If below one of them and
you do seem to be paging, you need more.
You'll also want to look at all the options available from
vmstat to see what the detailed memory use is. If you work-
load doesn't do much file I/O, memory use will probably be
dominated by ordinary process pages. If I/O dominates, then
buffer cache usage may dominate. If the files and blocks
read and written are a relatively small subset of the total
space used, what used by the buffer cache may be enough to
cache those much of the time. If the files accessed are
larger than memory, then a big buffer cache could hurt.
attached mail follows:
Deall,
Can anyone tell me where to find a utility that monitors CPU utilisation, memory used/actual/total.......and so on....
Either xwindows or char based will do!!
AndyT
Received on Tue Nov 23 1999 - 10:58:15 NZDT