nofib’s cacheprof’s Allocations not deterministic
Hi, with most of nofib, one expects at least the Allocation numbers to be reliably and deterministic. This is not the case with cacheprof, they seem to wibble around by ~0.2%, which is strange. Has anyone else noticed this yes, and if so, tried to find out the cause? Is it expected and desired, or a bug somewhere? Greetings, Joachim -- Joachim “nomeata” Breitner mail@joachim-breitner.de • http://www.joachim-breitner.de/ Jabber: nomeata@joachim-breitner.de • GPG-Key: 0x4743206C Debian Developer: nomeata@debian.org
On 10/12/13 18:30, Joachim Breitner wrote:
Hi,
with most of nofib, one expects at least the Allocation numbers to be reliably and deterministic. This is not the case with cacheprof, they seem to wibble around by ~0.2%, which is strange.
Has anyone else noticed this yes, and if so, tried to find out the cause? Is it expected and desired, or a bug somewhere?
It is neither expected nor desired, and if you could do anything to diagnose it further that would be great. Sometimes programs do things like generate a random temporary filename, and that can lead to non-deterministic allocation. If this program is doing something like that, we should fix it so it doesn't. Cheers, Simon
Just chiming in to say that I have also noticed that cacheprof's allocation
wiggles. I've seen it on linux and on mac
On Tue, Dec 10, 2013 at 12:30 PM, Joachim Breitner wrote: Hi, with most of nofib, one expects at least the Allocation numbers to be
reliably and deterministic. This is not the case with cacheprof, they
seem to wibble around by ~0.2%, which is strange. Has anyone else noticed this yes, and if so, tried to find out the
cause? Is it expected and desired, or a bug somewhere? Greetings,
Joachim --
Joachim “nomeata” Breitner
mail@joachim-breitner.de • http://www.joachim-breitner.de/
Jabber: nomeata@joachim-breitner.de • GPG-Key: 0x4743206C
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participants (3)
-
Joachim Breitner -
Nicolas Frisby -
Simon Marlow