Re: Re: dmesg timestamps vs uptime

2009-02-26 Thread Ben Hutchings
On Wed, 2009-02-25 at 23:06 -0500, Yaroslav Halchenko wrote: > Hi Ben, > > Thanks -- that is a nice pointer (i.e. /proc/sched_debug), but I still > can't match everything up in my mind... could you gimme a little hint? > > I guess the .clock (in sched_debug) is the interesting one, but it > doesn

Re: Re: dmesg timestamps vs uptime

2009-02-25 Thread Yaroslav Halchenko
Hi Ben, Thanks -- that is a nice pointer (i.e. /proc/sched_debug), but I still can't match everything up in my mind... could you gimme a little hint? I guess the .clock (in sched_debug) is the interesting one, but it doesn't match up to the "time" reported by the kernel... $> sudo tcpdump -i bon

Re: dmesg timestamps vs uptime

2009-02-25 Thread Ben Hutchings
On Wed, 2009-02-25 at 20:47 -0500, Yaroslav Halchenko wrote: > My today reported (and reassigned to linux2.6) bug #517122 > doesn't gimme rest. One of the problem of analysis of traces is that > some times are recorded since epoch, some are the kernel's "uptime". > what puzzles me is: > > * Diffe

Re: dmesg timestamps vs uptime

2009-02-25 Thread Yaroslav Halchenko
I guess kernel/sched_clock.c gave me the answer to the 1st question... even answered why I saw some timestamps jumping backwards while I was monitoring debug msgs of RPC + NFS , I guess they came from different CPUs now I wonder if there is a tool which would "work" along some other process and mo