[openib-general] Re: Re: Userspace testing results (many kernels, many svn trees)

Nishanth Aravamudan nacc at us.ibm.com
Tue Jan 24 12:00:19 PST 2006


On 24.01.2006 [20:54:38 +0200], Michael S. Tsirkin wrote:
> Quoting r. Nishanth Aravamudan <nacc at us.ibm.com>:
> > Subject: Re: [openib-general] Re: Re: Userspace testing results (many kernels,many svn trees)
> > 
> > On 24.01.2006 [01:44:42 +0200], Michael S. Tsirkin wrote:
> > > Quoting r. Nishanth Aravamudan <nacc at us.ibm.com>:
> > > > > I have just uploaded a simple utility which I called clock_test which
> > > > > measures a clock once a second: this way you'll know whether mtfb 
> > > > > is measuring time properly.
> > > > 
> > > > Will it get built by running make in the perftest directory?
> > > Yes.
> > > 
> > > > Any special usage I should know about?
> > > 
> > > Look at its source, you'll see.
> > > 
> > > You just run it for a while and it will print out the time
> > > tkaen from mtfb each second.
> > > Kill it with CRTL-C.
> > 
> > With 5169, I get:
> > 
> > 1 sec = 5.37731e+14 usec
> > 1 sec = 5.37451e+14 usec
> > 1 sec = 5.3748e+14 usec
> > 1 sec = 5.37495e+14 usec
> > 1 sec = 5.37483e+14 usec
> > 1 sec = 5.37493e+14 usec
> > 1 sec = 5.37495e+14 usec
> > 1 sec = 5.37495e+14 usec
> > 1 sec = 5.37493e+14 usec
> > 1 sec = 5.37492e+14 usec
> > 1 sec = 5.37495e+14 usec
> > 1 sec = 5.37494e+14 usec
> > 
> > Thanks,
> > Nish
> > 
> 
> Hmm. First, try updating to 5174 and run clock_test.
> Second, what about this patch:

Will do...

Thanks,
Nish



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