Instead of using threadspeed or other simple malloc/free test, i used
naviserver and Tcl pages as test for allocators.
Using ab from apache and stresstest it for thousand requests i test
several allocators. And
having everything the same except LD_PRELOAD the difference seems pretty
clear. Hoard/TCmalloc/Ptmalloc2 all
slower than zippy, no doubt. Using threadtest although, tcmalloc was
faster than zippy, but in real life it behaves differently.
So, i would suggest to you to try hit naviserver with nedmalloc. If it
will be always faster than zippy, than you got what you want. Other
thinks to watch, after each test see the size of nsd process.
I will try nedmaloc as well later today
Stephen Deasey wrote:
On 12/16/06, Zoran Vasiljevic <[EMAIL PROTECTED]> wrote:
Are you sure? AFAIK, we just go down to Tcl_Alloc in Tcl library.
The allocator there will not allow you that. There were some discussions
on comp.lang.tcl about it (Jeff Hobbs knows better). As they (Tcl)
just "inherited" what aolserver had at that time (I believe V4.0)
the same what applies to AS applies to Tcl and indirectly to us.
Yeah, pretty sure. You can only use Tcl objects within a single
interp, which is restricted to a single thread, but general
ns_malloc'd memory chunks can be passed around between threads. It
would suck pretty hard if that wasn't the case.
We have a bunch of reference counted stuff, cache values for example,
which we share among threads and delete when the reference count drops
to zero. You can ns_register_proc from any thread, which needs to
ns_free the old value...
Here's the (a?) problem:
http://www.bozemanpass.com/info/linux/malloc/Linux_Heap_Contention.html
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