Re: info on Performance Co-Pilot (linux)

[Ken McDonell <kenmcd@xxxxxxxxxxxxxxxxx>]

n Fri, 10 Mar 2000, Ami Vider wrote:
> Hello Ken:
> 
> I need a utility to measure IO performance on a Fibre Channel board on
> Linux. We are beta testing a new Linux driver and were looking at something
> equivalent to IOMeter on NT. Do you think that Performance Co-Pilot would be
> useful? Thanks, Ami Vider

Yes.  Without any changes, Linux (and hence PCP) will deliver i/os
per second for each disk spindle ...

$ pmval disk.dev.total

metric:    disk.dev.total
host:      oss.sgi.com
semantics: cumulative counter (converting to rate)
units:     count (converting to count / sec)
samples:   all
interval:  1.00 sec

               hda                   sda                   sdb    
               2.015                 2.015                 0.0    
               0.0                   0.0                   0.0    
               0.0                   0.0                   0.0    
               7.999                 7.999                 0.0    
               0.0                   0.0                   0.0    
               0.0                   0.0                   0.0    
               0.0                   0.0                   0.0    

blocks per sec in and out are also available.

the sard patch extends this to per partition stats.