Jeff,

When I type "perfstat" I get "perfstat not found". I did "priv set advanced" and found a "perf" command (but no perfstat). The only option is "perf report -t" which produced:

perf report -t

Perf Report Version 1

Samples: 7329671

Frequency: 1

cdnum1: 1038710 38488 3426 138 22 9 6 5 3 52722

cdnum2: 543270 126577 36953 9109 4025 1692 667 181 71 106277

cdnum3: 230170 82123 33869 12996 6076 3845 2422 1703 1362 90714

cdnum4: 152915 63635 29893 13241 6708 3709 2687 2503 4811 93892

cdnum5: 135915 51888 29791 15378 8257 4580 3192 2680 4408 100901

cdnum6: 139924 51186 30567 17450 10232 6176 4404 3692 4676 117282

cdnum7: 138287 48939 32252 20119 12588 8374 5898 5391 6875 144420

cdnum8: 83495 40740 30123 21557 15359 10684 8479 8567 11637 169717

cdnum9: 66735 34774 28842 23522 17792 14866 13893 16663 20827 237357

cdnum10: 133965 87836 99059 108707 109359 112678 111389 103683 93904 1526115

disk KB: 822731548 28129216776 1729351976

disk ops: 2643322965 101821809 134794311

There are two volumes and each is less than 75% full. There was a time about three months ago when it was over 80% but not recently

The OS version is:

NetApp Release 6.4.5: Wed Jul 14 04:27:30 PDT 2004

I'm attaching an MRTG graph that shows how it was cruising along with about 50Mbps peak usage until about a week ago when it appears that peak usage nearly doubled. We've been searching for a way to account for such an increase in usage with no success.

monthly-graph

_____

From: Jeff Mohler [mailto:jeff.mohler@signasys.com] Sent: Saturday, February 26, 2005 10:19 PM To: Fahy, Michael; toasters@mathworks.com Subject: RE: F720 head upgrade?

Run a perfstat..or at least tell us what its been up to.

Has the file system been full or over 80% for any period of time?

A perfstat will shed a TON of light.

Id be glad to peek at it if you sent the output my way.

:)

-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com]On Behalf Of Fahy, Michael Sent: Saturday, February 26, 2005 8:44 PM To: toasters@mathworks.com Subject: F720 head upgrade?

My good old F720 seems to have run out of gas. It is now running at 100% CPU utilization all the time and application performance has gotten really bad.

I'm hoping to be able to upgrade the head and still use the three drive shelves. But I'm wondering why I'm seeing this poor performance all of a sudden and if it really is normal behavior.

The F720 has a gigabit network interface but network usage never goes over 10%. When network usage gets to 5%, which would mean 50 Mbps, the CPU hits 100% and stays there.

Is that really the maximum capacity of an F720?

The three drive shelves are:

Shelf 0: EDM Kernel Version : 0.4 App. Version : 0.0

Shelf 1: VEM Kernel Version : 2.5 App. Version : 3.1

Shelf 2: VEM Kernel Version : 2.5 App. Version : 3.1

What options do I have for replacing the head with a faster one that would work with these shelves?