I think that, as so often, it depends. If you can use the pid provider's $target and/or work (now I'm really working from old memory ;-) with the a.out (?)provider, you may be able get meaningful data ...
regards Michael On Fri, Mar 21, 2014 at 4:00 PM, Robert Mustacchi <[email protected]> wrote: > On 03/21/2014 06:58 AM, Bob Friesenhahn wrote: > > On Mon, 17 Mar 2014, Michael Schuster wrote: > > > >> One more idea that comes to mind: use dtrace to find out which part of > >> the code's being "exercised" while > >> you're testing - use something tick-based (I'm fairly sure you'll be > >> able to find something better than I'd be > >> able to cook up, so I won't ;-). Then at least you have an idea > >> whether your theory is a good one. > > > > Is DTrace actually useful for a program which runs for less than one > > second? DTrace typically collects data at 999Hz. There could be a > > shortage of samples. > > If your program runs for less than a second it's hard to get meaningful > data with any tool unless you do things such as turn off interrupts, > create processor sets, pbind, etc. as the effects of traditional > multi-user noise can be quite high. > > Robert > > > ------------------------------------------- > illumos-discuss > Archives: https://www.listbox.com/member/archive/182180/=now > RSS Feed: > https://www.listbox.com/member/archive/rss/182180/21175681-9f7ae099 > Modify Your Subscription: > https://www.listbox.com/member/?&; > Powered by Listbox: http://www.listbox.com > -- Michael Schuster http://recursiveramblings.wordpress.com/ ------------------------------------------- illumos-discuss Archives: https://www.listbox.com/member/archive/182180/=now RSS Feed: https://www.listbox.com/member/archive/rss/182180/21175430-2e6923be Modify Your Subscription: https://www.listbox.com/member/?member_id=21175430&id_secret=21175430-6a77cda4 Powered by Listbox: http://www.listbox.com
