On Mar 28, 2005, at 5:21 PM, Stas Bekman wrote:
Andrew Weiland wrote:
Is it possible to replicate the functionality of application pooling in IIS 6 with mod_perl2 and apache 2?
I've looked at Registry scripts but at this point am unsure as to how they can help me with more than one application.
Andrew, please explain what's IIS' application pooling.
Hi Andrew, Stats. The answer I believe is no.
Application pooling basically lets you set up IIS sites and ODBC connnects in "shared"
mode (aka low or medium memory models) from IIS5. Then you're websites can share the same memory footprint.
Correct me if I'm wrong, but I believe this was being talked about for perl6/modperl3 and solar variables.
No, it already exists in mp2 + threaded Apache mpms + perl5.8.x, including the solar variables (see the threads::shared manpage for more details). The opcode tree is shared between the threads:
http://perl.apache.org/docs/2.0/user/performance/mpm.html#Memory_Requirements_in_Threaded_MPM
The problem is that there are too many problems with ithreads. And starting a new thread in the heavily loaded server is prohibitively expensive. Liz has implemented forks.pm as a drop-in replacement for threads.pm, to make things much faster.
On windows depending on your theading model, you might avoid the over head of code size x # of children.
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