Re: Apache::SharedMem
[EMAIL PROTECTED] wrote: > We are using IPC::MM and it works great. IPC::MM is the fastest game in town. It's only drawback is that the data is not persistent, so if you want your cache to persist across restarts it won't work for you. Apache::SharedMem and all the other modules based IPC::ShareLite or IPC::Shareable are slow. If IPC::MM won't work for you, I'd suggest MLDBM::Sync, Cache::FileCache, or Cache::Mmap. - Perrin
Re: Apache::SharedMem
We are using IPC::MM and it works great. We use it to cache about 5000 strings for our internationlized systems ( EFIGS-J right now, going to 15 languages soon ). Its pretty easy, in our startup handler we have : my $MM_SIZE = 500; my $MM_FILE = 'st_cache_mm_file'; my $st_cache_mm = IPC::MM::mm_create($MM_SIZE, $MM_FILE); my $st_cache_btree = IPC::MM::mm_make_btree_table($st_cache_mm); tie %CACHE::mmcache, 'IPC::MM::BTree', $st_cache_btree; Then we access it via the $CACHE::mmcache variable by language ID/Message ID hashes. The performance is pretty good, a huge huge improvement over direct to database calls. The way we have it configured is that each child calls a function per string. This function checkes the apache wide MM cache, if it doesn't find it then it grabs it from the DB and sticks it there for the next child to come along. We were using 'per child' caching but it was slow, expensive and gave page load speeds with a lot of variance ( .5-1.5 seconds for cache, 10 seconds for uncachced ). It was pretty nasty. We are not really expiring our cache, we just HUP apache to re-initialize it since MM is local to the root apache process. Your mileage may vary, ours is pretty good. John On Sat, 05 Oct 2002 15:40:05 -0300 Cristóvão Dalla Costa <[EMAIL PROTECTED]> wrote: >Does anyone have experience with Apache::SharedMem? I'd >like to use it to store an in-perl cache of a few >thousand database items, in order to decrease load, but I >noticed that it's version 0.09 and not updated in a year, >so I became a little suspicious. Any comments? > >Thanks. >
RE: Apache::SharedMem 0.07 installation problem
Actually, it is strange. bash$ echo $PWD /home/barancev bash$ perl -e 'print $ENV{PWD}' bash$ perl -e 'print "Oops!\n" unless exists $ENV{PWD}' Oops! bash$ By the way, `env` command does not show PWD variable too. Somebody khows what the reason can be? Once again my system configuration is bash$ uname -a Linux dallas 2.2.14-5.0 #1 Tue Mar 7 21:07:39 EST 2000 i686 unknown Looks like it is not mod_perl related topic, sorry for noise. > -Original Message- > From: Olivier Poitrey [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, October 02, 2001 1:05 PM > To: [EMAIL PROTECTED]; Modperl List > Subject: Re: Apache::SharedMem 0.07 installation problem > > > Ok, the test failed because your $ENV{PWD} is empty, I'll trap > this error on > 0.08. By the way, > why is your $ENV{PWD} empty ? > > regards > > -- > __ > _ > O l i v i e rP o i t r e y > > USA disaster support http://www.osdn.com/911.shtml* > > - Original Message - > From: "Alexei Barantsev" <[EMAIL PROTECTED]> > To: "Olivier Poitrey" <[EMAIL PROTECTED]>; "Modperl List" > <[EMAIL PROTECTED]> > Sent: Tuesday, October 02, 2001 10:50 AM > Subject: RE: Apache::SharedMem 0.07 installation problem > > > > Nothing, sir! :) The matter is that $ENV{PWD} is empty. > > > > Neither works this one: > > $ perl -MIPC::SysV -e 'print IPC::SysV::ftok(`pwd`, $<), "\n"' > > > > This variant works though: > > $ perl -MIPC::SysV -e 'chomp($pwd = `pwd`); print IPC::SysV::ftok($pwd, > $<), > > "\n"' > > -1760399103 > >
Re: Apache::SharedMem 0.07 installation problem
Ok, the test failed because your $ENV{PWD} is empty, I'll trap this error on 0.08. By the way, why is your $ENV{PWD} empty ? regards -- ___ O l i v i e rP o i t r e y USA disaster support http://www.osdn.com/911.shtml* - Original Message - From: "Alexei Barantsev" <[EMAIL PROTECTED]> To: "Olivier Poitrey" <[EMAIL PROTECTED]>; "Modperl List" <[EMAIL PROTECTED]> Sent: Tuesday, October 02, 2001 10:50 AM Subject: RE: Apache::SharedMem 0.07 installation problem > Nothing, sir! :) The matter is that $ENV{PWD} is empty. > > Neither works this one: > $ perl -MIPC::SysV -e 'print IPC::SysV::ftok(`pwd`, $<), "\n"' > > This variant works though: > $ perl -MIPC::SysV -e 'chomp($pwd = `pwd`); print IPC::SysV::ftok($pwd, $<), > "\n"' > -1760399103 > > > -Original Message- > > From: Olivier Poitrey [mailto:[EMAIL PROTECTED]] > > Sent: Tuesday, October 02, 2001 12:24 PM > > To: [EMAIL PROTECTED]; Modperl List > > Subject: Re: Apache::SharedMem 0.07 installation problem > > > > > > What this command return on your system: > > > > $ perl -MIPC::SysV -e 'print IPC::SysV::ftok($ENV{PWD}, $<), "\n"' > > > > best regards > > > > -- > > __ > > _ > > O l i v i e rP o i t r e y > > > > USA disaster support http://www.osdn.com/911.shtml > > > > - Original Message - > > From: "Alexei Barantsev" <[EMAIL PROTECTED]> > > To: "Modperl List" <[EMAIL PROTECTED]> > > Sent: Tuesday, October 02, 2001 8:32 AM > > Subject: Apache::SharedMem 0.07 installation problem > > > > > > > I have problems with Apache::SharedMem 0.07 installation. > > > > > > Here is my configuration: > > > > > > bash$ uname -a > > > Linux dallas 2.2.14-5.0 #1 Tue Mar 7 21:07:39 EST 2000 i686 unknown > > > > > > bash$ perl -v > > > This is perl, v5.6.1 built for i686-linux > > > > > > And here is 'make test' report: > > > > > > bash$ make test TEST_VERBOSE=1 > > > PERL_DL_NONLAZY=1 > > > > > /usr/bin/perl5.00503 -Iblib/arch -Iblib/lib > > -I/usr/lib/perl5/5.00503/i386-li > > > nux -I/usr/lib/perl5/5.005 > > > 03 -e 'use Test::Harness qw(&runtests $verbose); $verbose=1; runtests > > > @ARGV;' t/*.t > > > t/assign..1..8 > > > ok 1 > > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1073. > > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1075. > > > Apache::SharedMem object creation missing rootkey parameter. at > > t/assign.t > > > line 14 > > > dubious > > > Test returned status 2 (wstat 512, 0x200) > > > DIED. FAILED tests 2-8 > > > Failed 7/8 tests, 12.50% okay > > > t/import..1..5 > > > ok 1 > > > ok 2 > > > ok 3 > > > ok 4 > > > ok 5 > > > ok > > > t/smartlock...1..16 > > > ok 1 > > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1073. > > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1075. > > > Apache::SharedMem object creation missing rootkey parameter. at > > > t/smartlock.t line 14 > > > dubious > > > Test returned status 2 (wstat 512, 0x200) > > > DIED. FAILED tests 2-16 > > > Failed 15/16 tests, 6.25% okay > > > t/timedoutlock1..8 > > > ok 1 > > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1073. > > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1075. > > > Apache::SharedMem object creation missing rootkey parameter. at > > > t/timedoutlock.t line 14 > > > dubious > > > Test returned status 2 (wstat 512, 0x200) > > > DIED. FAILED tests 2-8 > > > Failed 7/8 tests, 12.50% okay > > > t/zdestroy1..3 > > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1073. > > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1075. > > > Apache::SharedMem object creation missing rootkey parameter. at > > t/zdestroy.t > > > line 14 > > > dubious > > > Test returned status 2 (wstat 512, 0x200) > > > DIED. FAILED tests 1-3 > > > Failed 3/3 tests, 0.00% okay > > > Failed Test Stat Wstat Total Fail Failed List of Failed > > > > > -- > > -- > > > --- > > > t/assign.t 2 512 87 87.50% 2-8 > > > t/smartlock.t 2 51216 15 93.75% 2-16 > > > t/timedoutlock.t2 512 87 87.50% 2-8 > > > t/zdestroy.t2 512 33 100.00% 1-3 > > > Failed 4/5 test scripts, 20.00% okay. 32/40 subtests failed, > > 20.00% okay. > > > make: *** [test_dynamic] Error 2 > > > > > > -- > > > Alexei Barantsev, ISP RAS > > > E-mail: [EMAIL PROTECTED] > > > ICQ : 3959207 > > > > > > > > > >
RE: Apache::SharedMem 0.07 installation problem
Nothing, sir! :) The matter is that $ENV{PWD} is empty. Neither works this one: $ perl -MIPC::SysV -e 'print IPC::SysV::ftok(`pwd`, $<), "\n"' This variant works though: $ perl -MIPC::SysV -e 'chomp($pwd = `pwd`); print IPC::SysV::ftok($pwd, $<), "\n"' -1760399103 > -Original Message- > From: Olivier Poitrey [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, October 02, 2001 12:24 PM > To: [EMAIL PROTECTED]; Modperl List > Subject: Re: Apache::SharedMem 0.07 installation problem > > > What this command return on your system: > > $ perl -MIPC::SysV -e 'print IPC::SysV::ftok($ENV{PWD}, $<), "\n"' > > best regards > > -- > __ > _ > O l i v i e rP o i t r e y > > USA disaster support http://www.osdn.com/911.shtml > > - Original Message - > From: "Alexei Barantsev" <[EMAIL PROTECTED]> > To: "Modperl List" <[EMAIL PROTECTED]> > Sent: Tuesday, October 02, 2001 8:32 AM > Subject: Apache::SharedMem 0.07 installation problem > > > > I have problems with Apache::SharedMem 0.07 installation. > > > > Here is my configuration: > > > > bash$ uname -a > > Linux dallas 2.2.14-5.0 #1 Tue Mar 7 21:07:39 EST 2000 i686 unknown > > > > bash$ perl -v > > This is perl, v5.6.1 built for i686-linux > > > > And here is 'make test' report: > > > > bash$ make test TEST_VERBOSE=1 > > PERL_DL_NONLAZY=1 > > > /usr/bin/perl5.00503 -Iblib/arch -Iblib/lib > -I/usr/lib/perl5/5.00503/i386-li > > nux -I/usr/lib/perl5/5.005 > > 03 -e 'use Test::Harness qw(&runtests $verbose); $verbose=1; runtests > > @ARGV;' t/*.t > > t/assign..1..8 > > ok 1 > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1073. > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1075. > > Apache::SharedMem object creation missing rootkey parameter. at > t/assign.t > > line 14 > > dubious > > Test returned status 2 (wstat 512, 0x200) > > DIED. FAILED tests 2-8 > > Failed 7/8 tests, 12.50% okay > > t/import..1..5 > > ok 1 > > ok 2 > > ok 3 > > ok 4 > > ok 5 > > ok > > t/smartlock...1..16 > > ok 1 > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1073. > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1075. > > Apache::SharedMem object creation missing rootkey parameter. at > > t/smartlock.t line 14 > > dubious > > Test returned status 2 (wstat 512, 0x200) > > DIED. FAILED tests 2-16 > > Failed 15/16 tests, 6.25% okay > > t/timedoutlock1..8 > > ok 1 > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1073. > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1075. > > Apache::SharedMem object creation missing rootkey parameter. at > > t/timedoutlock.t line 14 > > dubious > > Test returned status 2 (wstat 512, 0x200) > > DIED. FAILED tests 2-8 > > Failed 7/8 tests, 12.50% okay > > t/zdestroy1..3 > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1073. > > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1075. > > Apache::SharedMem object creation missing rootkey parameter. at > t/zdestroy.t > > line 14 > > dubious > > Test returned status 2 (wstat 512, 0x200) > > DIED. FAILED tests 1-3 > > Failed 3/3 tests, 0.00% okay > > Failed Test Stat Wstat Total Fail Failed List of Failed > > > -- > -- > > --- > > t/assign.t 2 512 87 87.50% 2-8 > > t/smartlock.t 2 51216 15 93.75% 2-16 > > t/timedoutlock.t2 512 87 87.50% 2-8 > > t/zdestroy.t2 512 33 100.00% 1-3 > > Failed 4/5 test scripts, 20.00% okay. 32/40 subtests failed, > 20.00% okay. > > make: *** [test_dynamic] Error 2 > > > > -- > > Alexei Barantsev, ISP RAS > > E-mail: [EMAIL PROTECTED] > > ICQ : 3959207 > > > > >
Re: Apache::SharedMem 0.07 installation problem
What this command return on your system: $ perl -MIPC::SysV -e 'print IPC::SysV::ftok($ENV{PWD}, $<), "\n"' best regards -- ___ O l i v i e rP o i t r e y USA disaster support http://www.osdn.com/911.shtml - Original Message - From: "Alexei Barantsev" <[EMAIL PROTECTED]> To: "Modperl List" <[EMAIL PROTECTED]> Sent: Tuesday, October 02, 2001 8:32 AM Subject: Apache::SharedMem 0.07 installation problem > I have problems with Apache::SharedMem 0.07 installation. > > Here is my configuration: > > bash$ uname -a > Linux dallas 2.2.14-5.0 #1 Tue Mar 7 21:07:39 EST 2000 i686 unknown > > bash$ perl -v > This is perl, v5.6.1 built for i686-linux > > And here is 'make test' report: > > bash$ make test TEST_VERBOSE=1 > PERL_DL_NONLAZY=1 > /usr/bin/perl5.00503 -Iblib/arch -Iblib/lib -I/usr/lib/perl5/5.00503/i386-li > nux -I/usr/lib/perl5/5.005 > 03 -e 'use Test::Harness qw(&runtests $verbose); $verbose=1; runtests > @ARGV;' t/*.t > t/assign..1..8 > ok 1 > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1073. > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1075. > Apache::SharedMem object creation missing rootkey parameter. at t/assign.t > line 14 > dubious > Test returned status 2 (wstat 512, 0x200) > DIED. FAILED tests 2-8 > Failed 7/8 tests, 12.50% okay > t/import..1..5 > ok 1 > ok 2 > ok 3 > ok 4 > ok 5 > ok > t/smartlock...1..16 > ok 1 > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1073. > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1075. > Apache::SharedMem object creation missing rootkey parameter. at > t/smartlock.t line 14 > dubious > Test returned status 2 (wstat 512, 0x200) > DIED. FAILED tests 2-16 > Failed 15/16 tests, 6.25% okay > t/timedoutlock1..8 > ok 1 > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1073. > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1075. > Apache::SharedMem object creation missing rootkey parameter. at > t/timedoutlock.t line 14 > dubious > Test returned status 2 (wstat 512, 0x200) > DIED. FAILED tests 2-8 > Failed 7/8 tests, 12.50% okay > t/zdestroy1..3 > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1073. > Use of uninitialized value at blib/lib/Apache/SharedMem.pm line 1075. > Apache::SharedMem object creation missing rootkey parameter. at t/zdestroy.t > line 14 > dubious > Test returned status 2 (wstat 512, 0x200) > DIED. FAILED tests 1-3 > Failed 3/3 tests, 0.00% okay > Failed Test Stat Wstat Total Fail Failed List of Failed > -- -- > --- > t/assign.t 2 512 87 87.50% 2-8 > t/smartlock.t 2 51216 15 93.75% 2-16 > t/timedoutlock.t2 512 87 87.50% 2-8 > t/zdestroy.t2 512 33 100.00% 1-3 > Failed 4/5 test scripts, 20.00% okay. 32/40 subtests failed, 20.00% okay. > make: *** [test_dynamic] Error 2 > > -- > Alexei Barantsev, ISP RAS > E-mail: [EMAIL PROTECTED] > ICQ : 3959207 > >