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

[Nishanth Aravamudan]

On 24.01.2006 [23:19:52 +0200], Michael S. Tsirkin wrote:
> Quoting r. Nishanth Aravamudan <nacc at us.ibm.com>:
> > Subject: Re: [openib-general] Re: Re: Userspace testing results (manykernels, many svn trees)
> > 
> > On 24.01.2006 [21:39:23 +0200], Michael S. Tsirkin wrote:
> > > Quoting r. Roland Dreier <rdreier at cisco.com>:
> > > > Subject: Re: [openib-general] Re: Re: Userspace testing results (manykernels, many svn trees)
> > > > 
> > > >     Michael> 1 sec = 5.37731e+14 usec
> > > > 
> > > >     Michael> which seems to indicate something's still wrong.
> > > > 
> > > > BTW this number is pretty close to 2^32 times bigger than 1e6, so the
> > > > problem is probably still using long long to return the result of
> > > > mftb (which will result in shifting the result by 32 bits, ie
> > > > multiplying by 2^32).
> > > 
> > > Hmm.
> > > Maybe make clean wasnt run after updating?
> > > Could it be un on rev 5174?
> > 
> > Heh, here's what happens with 5174:
> > 
> > Correlation coefficient r^2: 0.773428 < 0.9
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 1 sec = inf usec
> > 
> > And so forth...
> > 
> > Thanks,
> > Nish
> 
> Hmm. Looks like mftb is returning wrong data.
> Could you uncomment lines setting DEBUG and DEBUG_DATA at the top?
> This will print all mftb values out.

Sure -- but I won't be able to for a few hours, I have to run to class.
Sorry!

Thanks,
Nish