Yep, I'm familiar with XDebug and KCacheGrind. As you say, though, it
doens't (as far as I am aware) offer the particular data that I'm after.
We've already got cachegrind gurus working on the code who know how to
use it better than I do. :-) What I'm looking for is "see this big
cache object we've been building up in memory for this whole page
request? Now that we're done with the page, how big is it, really?"
--Larry Garfield
user@xxxxxxxxxxxxxx wrote:
ON Linux I have kcacheGrind setup with Xdebug and I find it is a nice
little thing to have. It won't tell you the memory consumed but it will
find cycles and display object maps. if you have Kcachegrind it is
likely you have valgrind installed.
http://www2.mandriva.com/
http://valgrind.org/
http://kcachegrind.sourceforge.net/html/Home.html
http://xdebug.org/
Larry Garfield wrote:
Hi folks. I have a complicated PHP app that is eating up more memory
than I think it should. I have a couple of theories as to where it
could be going, but I need some way to verify it.
There are a number of large data structures (mostly arrays) that get
built up throughout the course of the request. What I'd like to be
able to do is at certain points check to see how much memory those
data structures are using. Because they're not all built at once, the
usual "check memory before, build, check after" routine won't work.
Plus, that gets screwed up by PHP's use of copy-on-write at times.
I know that it would result in essentially over-reporting, but I would
ideally like to be able to ignore the copy-on-write issue and say "if
this variable were the only thing in memory (and its dependents, of
course, for a nested array), what would its memory usage be? I just
have no idea how to do that.
Anyone have a suggestion for how to accomplish that?
--Larry Garfield
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