Hi,
It seems Harry was correct with this, I applied the following patch
supplied by Doug on the mod_perl list and the segfaults have gone away.
We're not using threaded perl by the way.
On another note, our Mason driven sites have been getting well over 1
million page views a day this week (main one is UEFA Champions League
Fantasy Football - http://uclff.ismgames.com) and the performance has
been great :-)
Cheers,
Mark.
On Sat, 9 Sep 2000, Shane Adams wrote:
#7 0x80894de in XS_Apache_finfo (cv=0x8207410) at Apache.xs:1844
i haven't tried to reproduce this, but suspect a bug in $r-finfo which
the patch below should workaround.
--- lib/HTML/Mason/ApacheHandler.pm~Thu Aug 24 22:42:51 2000
+++ lib/HTML/Mason/ApacheHandler.pm Mon Sep 11 11:43:02 2000
@@ -531,7 +531,7 @@
# If filename is a directory, then either decline or simply reset
# the content type, depending on the value of decline_dirs.
#
-if (-d $r-finfo) {
+if (-d $r-filename) {
if ($self-decline_dirs) {
return DECLINED;
} else {
@@ -544,7 +544,7 @@
# (mainly for dhandlers).
#
my $pathname = $r-filename;
-$pathname .= $r-path_info unless -f $r-finfo;
+$pathname .= $r-path_info unless -f _;
#
# Compute the component path via the resolver.
@@ -555,7 +555,7 @@
#
# Decline if file does not pass top level predicate.
#
-if (-f $r-finfo and defined($self-{top_level_predicate})) {
+if (-f _ and defined($self-{top_level_predicate})) {
return NOT_FOUND unless
$self-{top_level_predicate}-($r-filename);
}
Harry Danilevsky wrote:
Not sure if this is the reason, but I wonder if you are using
thread-enabled Perl. The reason I ask is that I see a call to finfo(),
and under threaded Perl (on Solaris, not Linux though) I was getting
an intermittent Perl error about not being able to "upgrade this kind of
scalar".
These errors were produced by calls to $r-finfo() in Mason/ApacheHandler.pm
I wrapped them into eval() with a fallback to $r-filename()
and the problem disappeared. I suggest you try replacing calls to finfo()
with filename() and see what happens (it certainly may degrade the
performance).
Harry Danilevsky
[EMAIL PROTECTED]
-Original Message-
From: Mark Hughes [mailto:[EMAIL PROTECTED]]
Sent: Thursday, August 31, 2000 5:12 AM
To: [EMAIL PROTECTED]
Subject: [Mason]Intermittent Segfaults
Hi,
Our sites experience intermittent segfaults (Segmentation Fault (11))
when serving mason generated pages, these seem to be completely random
in
frequency and called component (though components do share
common module
code), and occur infrequently, every few thousand requests or so.
The servers are very busy, though load and memory usage are light.
Setup Details:
Mason 0.87 (Just tried 0.88, same intermittent problem)
Perl 5.005_03
mod_perl 1.24
Apache 1.3.12
Linux 2.2.16
I've tried mason using Apache::Request and CGI.pm to handle
%ARGS - same
problem.
Backtrace, obtained according to mod_perl SUPPORT file
Program received signal SIGSEGV, Segmentation fault.
0x80ed2b2 in Perl_pp_entersub ()
#0 0x80ed2b2 in Perl_pp_entersub ()
#1 0x80bf38c in perl_call_sv ()
#2 0x80e13cc in Perl_croak ()
#3 0x80ee02a in Perl_sv_upgrade ()
#4 0x80c1d82 in Perl_gv_init ()
#5 0x80c2e19 in Perl_gv_fetchpv ()
#6 0x8087f1e in XS_Apache_finfo ()
#7 0x80ecfb6 in Perl_pp_entersub ()
#8 0x8116f5d in Perl_runops_standard ()
#9 0x80bf3a1 in perl_call_sv ()
#10 0x807c1cb in perl_call_handler ()
#11 0x807b9db in perl_run_stacked_handlers ()
#12 0x8079f5d in perl_handler ()
#13 0x80950e3 in ap_invoke_handler ()
#14 0x80a85b9 in ap_some_auth_required ()
#15 0x80a861c in ap_process_request ()
#16 0x809ff0e in ap_child_terminate ()
#17 0x80a009c in ap_child_terminate ()
#18 0x80a01f9 in ap_child_terminate ()
#19 0x80a0826 in ap_child_terminate ()
#20 0x80a0fb3 in main ()
#21 0x400941eb in __libc_start_main (main=0x80a0c6c main, argc=6,
argv=0xbc94, init=0x8060090 _init, fini=0x811703c _fini,
rtld_fini=0x4000a610 _dl_fini, stack_end=0xbc8c)
at ../sysdeps/generic/libc-start.c:90
Any clues on how I can further debug this problem to try and
get to the
bottom
of it. Is this a question better asked on the mod_perl list?
BTW - I'm not using PerlFreshRestart
Cheers,
Mark
___
Mason maillist - [EMAIL PROTECTED]
http://netizen.com.au/mailman/listinfo/mason
___
Mason maillist - [EMAIL PROTECTED]
http://netizen.com.au/mailman/listinfo/mason
