Hi All,
We have modperl application running on 64bit (2 cores), freebsd 8.2, perl
1.14.1, modperl 2.0.5, apache 2.2.21, 24GB of ram and about 5.5k users.
Additional system details are below. Under heavy load we are seeing errors
of the form
Failed to evaluate module Parser::Legacy: Attempt to reload
> Parser/Legacy.pm aborted.\nCompilation failed in require at (eval 15635)
> line 1....
I vaguely suspect this is a concurrency issue. Requests that generate such
errors often, but not always, call to GD.pm to build dynamically generated
images. The errors often, but not always, refer to Parser::Legacy a module
which is part of our application, but I think this is a red-herring since
it only occurs under load, and I've seen such errors refer to other
modules, for example DateTime.
My server is the largest production freebsd machine running this
application; most servers of this size run Red Hat or Ubuntu and as far as
I can tell nobody has seen this error before.
I honestly have no idea if this is a modperl issue, an apache issue, a
freebsd issue, etc. But I thought I would start here since this is where
the rubber (requests) meet the road (perl). Has anyone see such an error
before? Or know of a similar case that might give me some additional clues?
Thanks very much,
Jason Aubrey
OS:
FreeBSD 8.2-RELEASE-p10
Perl:
modperl 2.0.5
Platform:
osname=freebsd, osvers=8.2-release-p2, archname=amd64-freebsd
uname='freebsd ww64 8.2-release-p2 freebsd 8.2-release-p2 #0: sat sep
17 13:09:25 cdt 2011 root@ww64:usrobjusrsrcsysvmware amd64 '
config_args='-sde -Dprefix=/usr/local
-Darchlib=/usr/local/lib/perl5/5.14.1/mach
-Dprivlib=/usr/local/lib/perl5/5.14.1
-Dman3dir=/usr/local/lib/perl5/5.14.1/perl/man/man3
-Dman1dir=/usr/local/man/man1
-Dsitearch=/usr/local/lib/perl5/site_perl/5.14.1/mach
-Dsitelib=/usr/local/lib/perl5/site_perl/5.14.1 -Dscriptdir=/usr/local/bin
-Dsiteman3dir=/usr/local/lib/perl5/5.14.1/man/man3
-Dsiteman1dir=/usr/local/man/man1 -Ui_malloc -Ui_iconv -Uinstallusrbinperl
-Dcc=cc -Duseshrplib -Dinc_version_list=none
-Dccflags=-DAPPLLIB_EXP="/usr/local/lib/perl5/5.14.1/BSDPAN" -Doptimize=-O2
-fno-strict-aliasing -pipe -march=native -Ui_gdbm -Dusethreads=n
-Dusemymalloc=y -Duse64bitint -Dusesitecustomize'
hint=recommended, useposix=true, d_sigaction=define
useithreads=undef, usemultiplicity=undef
useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
use64bitint=define, use64bitall=define, uselongdouble=undef
usemymalloc=y, bincompat5005=undef
Compiler:
cc='cc', ccflags ='-DAPPLLIB_EXP="/usr/local/lib/perl5/5.14.1/BSDPAN"
-DHAS_FPSETMASK -DHAS_FLOATINGPOINT_H -fno-strict-aliasing -pipe
-fstack-protector -I/usr/local/include',
optimize='-O2 -fno-strict-aliasing -pipe -march=native',
cppflags='-DAPPLLIB_EXP="/usr/local/lib/perl5/5.14.1/BSDPAN"
-DHAS_FPSETMASK -DHAS_FLOATINGPOINT_H -fno-strict-aliasing -pipe
-fstack-protector -I/usr/local/include'
ccversion='', gccversion='4.2.1 20070719 [FreeBSD]', gccosandvers=''
intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t',
lseeksize=8
alignbytes=8, prototype=define
Linker and Libraries:
ld='cc', ldflags =' -Wl,-E -fstack-protector -L/usr/local/lib'
libpth=/usr/lib /usr/local/lib
libs=-lm -lcrypt -lutil
perllibs=-lm -lcrypt -lutil
libc=, so=so, useshrplib=true, libperl=libperl.so
gnulibc_version=''
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='
-Wl,-R/usr/local/lib/perl5/5.14.1/mach/CORE'
cccdlflags='-DPIC -fPIC', lddlflags='-shared -L/usr/local/lib
-fstack-protector'
Characteristics of this binary (from libperl):
Compile-time options: MYMALLOC PERL_DONT_CREATE_GVSV PERL_MALLOC_WRAP
PERL_PRESERVE_IVUV USE_64_BIT_ALL USE_64_BIT_INT
USE_LARGE_FILES USE_PERLIO USE_PERL_ATOF
USE_SITECUSTOMIZE
Built under freebsd
Compiled at Sep 17 2011 19:35:32
Apache:
Server version: Apache/2.2.21 (FreeBSD)
Server built: Sep 17 2011 20:41:36
Server's Module Magic Number: 20051115:30
Server loaded: APR 1.4.5, APR-Util 1.3.12
Compiled using: APR 1.4.5, APR-Util 1.3.12
Architecture: 64-bit
Server MPM: Prefork
threaded: no
forked: yes (variable process count)
Server compiled with....
-D APACHE_MPM_DIR="server/mpm/prefork"
-D APR_HAS_SENDFILE
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
-D APR_USE_FLOCK_SERIALIZE
-D APR_USE_PTHREAD_SERIALIZE
-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
-D APR_HAS_OTHER_CHILD
-D AP_HAVE_RELIABLE_PIPED_LOGS
-D DYNAMIC_MODULE_LIMIT=128
-D HTTPD_ROOT="/usr/local"
-D SUEXEC_BIN="/usr/local/bin/suexec"
-D DEFAULT_PIDLOG="/var/run/httpd.pid"
-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
-D DEFAULT_LOCKFILE="/var/run/accept.lock"
-D DEFAULT_ERRORLOG="logs/error_log"
-D AP_TYPES_CONFIG_FILE="etc/apache22/mime.types"
-D SERVER_CONFIG_FILE="etc/apache22/httpd.conf"
