I also tried on my QuadXeon workstation and on an old P3 (with old lenny (iotop version 0.2-3)) - all of the different ways to call "iotop -b -n1" show the problem. On all nodes.
Seems not to be related to the number of CPUs. Since the output starts right away, to me it looks like there aren't two snapshots taken (or there is no time delay between the both). But that wouldn't explain the different behaviour on our machines. Regards, uwe > -----Original Message----- > From: Paul Wise [mailto:p...@debian.org] > Sent: Samstag, 26. Februar 2011 06:15 > To: Maier, Uwe; 614...@bugs.debian.org > Cc: Guillaume Chazarain > Subject: Re: Bug#614978: iotop: All values 0.0 when using -b parameter > > On Fri, 2011-02-25 at 13:14 +0000, Maier, Uwe wrote: > > > Hi Paul, > > a.) fails here too > > b.) fails here > > c.) fails here > > > > Seems your system is different than mine (smp?). > > I have a 4-core Intel i7 processor, you seems to have many more > processors than I do. > > Guillaume, is the number of CPUs likely to affect the kernel APIs used > by iotop or would this be an issue in the iotop code? > > -- > bye, > pabs > > http://wiki.debian.org/PaulWise
