On Fri, May 20, 2016 at 12:09:01PM +0200, Ingo Molnar wrote: > > * Peter Zijlstra <pet...@infradead.org> wrote: > > > On Fri, May 20, 2016 at 10:30:08AM +0200, Peter Zijlstra wrote: > > > On Thu, May 19, 2016 at 10:39:26PM -0700, Davidlohr Bueso wrote: > > > > Specifically > > > > for the 'cascade_cond' and 'cascade_flock' programs, which exhibit > > > > hangs in libc's > > > > semop() blocked waiting for zero. > > > > > > OK; so I've been running: > > > > > > while :; do > > > bin/cascade_cond -E -C 200 -L -S -W -T 200 -I 2000000 ; > > > bin/cascade_flock -E -C 200 -L -S -W -P 200 -I 5000000 ; > > > done > > > > > > for a few minutes now and its not stuck and my machine didn't splat. > > > > > > Am I not doing it right? > > > > Hooray, it went *bang*.. > > I suspect a required step was to post about failure to reproduce! >
It is known that the bug is both intermittent and not all machines can reproduce the problem. If it fails to reproduce, it's not necessarily a methodology error and can simply be a function of luck. -- Mel Gorman SUSE Labs
