Re: Priorities

[Sarton O'Brien <bsd-xen%roguewrt.org@localhost>]

On Mon, 12 May 2008 11:02:02 pm matthew sporleder wrote:
> On Sun, May 11, 2008 at 11:31 PM, Sarton O'Brien 
> <bsd-xen%roguewrt.org@localhost> 
wrote:
> >
> > On Mon, 12 May 2008 01:27:06 pm César Catrián Carreño wrote:
> >  > I've updated to 4.99.62 this end of week. I have apache installed, and
> >  > I've noted that I can't access a own php site while compiling software.
> >  > The compile process is a bunch of pkgsrc DEPENDS and reniced to 15,
> >  > meanwhile the httpd processes are not reniced (0). As soon when the
> >  > process is suspended, it loads the web page. Resuming the compiling,
> >  > all the httpd processes become in state netio, some of them timeouts.
> >
> >  With regards to apache, I'm seeing this:
> >
> >  [Mon May 12 13:16:35 2008] [notice] child pid 12803 exit signal 
Segmentation
> >  fault (11)
> >  [Mon May 12 13:16:41 2008] [notice] child pid 21752 exit signal 
Segmentation
> >  fault (11)
> >
> >  Under:
> >
> >  NetBSD www.local 4.99.62 NetBSD 4.99.62 (XEN3_DOMU) #0: Tue May  6 
13:20:07
> >  EST 2008  
> > root%mx0.cre.local@localhost:/usr/obj/sys/arch/i386/compile/XEN3_DOMU 
i386
> >
> >  And have been since at least 4.99.60.
> >
> >  I'm not sure of the best way to give any useful information though.
> >
> >  It's definitely load based as an identical system has not had an error 
yet.
> 
> Can you try getting core dumps from apache in those situations?  I had
> a similar situation on solaris at one point and had a real time
> messing with CoreDumpDirectory (apache) and system core settings to
> try and keep all the child dumps around.
> 
> I expect that you have some module doing something nasty and it should
> show up in the core.

It's gone from happening nearly all the time to just not happening ... oh 
well.

In the meantime, on another system of the same vintage, perl dumped core. I'm 
not sure what info to glean:

Core was generated by `perl'.
Program terminated with signal 11, Segmentation fault.
#0  0xba8a300d in UUPreProcessPart ()
   
from 
/usr/pkg/lib/perl5/vendor_perl/5.8.0/i386-netbsd-thread-multi/auto/Convert/UUlib/UUlib.so
(gdb)
(gdb)
(gdb) bt
#0  0xba8a300d in UUPreProcessPart ()
   
from 
/usr/pkg/lib/perl5/vendor_perl/5.8.0/i386-netbsd-thread-multi/auto/Convert/UUlib/UUlib.so
#1  0xba8a08c1 in UULoadFileWithPartNo ()
   
from 
/usr/pkg/lib/perl5/vendor_perl/5.8.0/i386-netbsd-thread-multi/auto/Convert/UUlib/UUlib.so
#2  0xba89bca2 in XS_Convert__UUlib_LoadFile ()
   
from 
/usr/pkg/lib/perl5/vendor_perl/5.8.0/i386-netbsd-thread-multi/auto/Convert/UUlib/UUlib.so
#3  0xbbb5cd89 in Perl_pp_entersub ()
   from /usr/pkg/lib/perl5/5.8.0/i386-netbsd-thread-multi/CORE/libperl.so
#4  0xbbb5bba6 in Perl_runops_standard ()
   from /usr/pkg/lib/perl5/5.8.0/i386-netbsd-thread-multi/CORE/libperl.so
#5  0xbbb0a796 in perl_run ()
   from /usr/pkg/lib/perl5/5.8.0/i386-netbsd-thread-multi/CORE/libperl.so
#6  0x0804943e in main ()
(gdb)

Sarton