On Wed, Nov 12, 2008 at 01:36:32PM +0100, Gisle Aas wrote: > > On Wed, Nov 12, 2008 at 11:39, <[EMAIL PROTECTED]> wrote: > > Log: > > Format negative time values as seconds, not nanoseconds. > > I don't have anything against the change; I just wonder if there are > circumstances where the profiler would measure negative time?
Some. Very small negative values can happen eg on SMP systems with unstable clocks http://search.cpan.org/~timb/Devel-NYTProf/lib/Devel/NYTProf.pm#CAVEATS (the worst I've encountered was an XenU system) especially when using a non-monotonic clock. Larger negative values can appear in the subroutine profiler for recursive subs, due to the way the time spent recursing is 'missing'. Tim. --~--~---------~--~----~------------~-------~--~----~ You've received this message because you are subscribed to the Devel::NYTProf Development User group. Group hosted at: http://groups.google.com/group/develnytprof-dev Project hosted at: http://perl-devel-nytprof.googlecode.com CPAN distribution: http://search.cpan.org/dist/Devel-NYTProf To post, email: [email protected] To unsubscribe, email: [EMAIL PROTECTED] -~----------~----~----~----~------~----~------~--~---
