Date: Tue, 27 Nov 2007 23:14:47 +0000 From: Bruce Cran <bruce@cran.org.uk> To: Pieter de Goeje <pieter@degoeje.nl> Cc: Andy Greenwood <greenwood.andy@gmail.com>, Aryeh Friedman <aryeh.friedman@gmail.com>, freebsd-questions@freebsd.org Subject: Re: Upper limit on make -j ? Message-ID: <474CA4E7.9060401@cran.org.uk> In-Reply-To: <200711271657.00637.pieter@degoeje.nl> References: <bef9a7920711270025k73cfd90i4d3abe3c6eab6160@mail.gmail.com> <474C3A12.9040107@gmail.com> <200711271657.00637.pieter@degoeje.nl>
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Pieter de Goeje wrote:
> On Tuesday 27 November 2007, Andy Greenwood wrote:
>> Aryeh Friedman wrote:
>>> Before I file a PR I just want to know if it is worth it to file a PR
>>> for:
>>>
>>> make -j1000 buildworld buildkernel installkernel
>>> seg faulting
>> I thought that the kernel builds couldn't be built using parallel jobs,
>> that it might break something. Is that not true?
> In my experience parallel kernel builds are fine. I think (wild guess) the OP
> is running out of memory and somewhere in make or gcc the return value of
> malloc() isn't checked.
>
> -
> Pieter de Goeje
I just tried this on my amd64 7.0-BETA3 system with 2GB RAM and swap was
never touched but make still segfaulted during 'make -j1000 buildworld':
[...]
rm -f .depend
mkdep -f .depend -a [long list of files]
echo libc.so.7: /usr/obj/usr/src/tmp/usr/lib/libgcc.a >> .depend
Segmentation fault (core dumped)
*** Error code 139
1 error
*** Error code 2
1 error
*** Error code 2
1 error
*** Error code 2
1 error
>
> gdb -core /usr/obj/usr/src/lib/libc/make.core /usr/bin/make
GNU gdb 6.1.1 [FreeBSD]
[...]
This GDB was configured as "amd64-marcel-freebsd"...
Core was generated by `make'.
Program terminated with signal 11, Segmentation fault.
#0 0x0000000000432067 in __vfprintf ()
(gdb) bt
#0 0x0000000000432067 in __vfprintf ()
#1 0x0000000000435114 in vfprintf ()
#2 0x000000000042d676 in fprintf ()
#3 0x0000000000406305 in JobExec (job=0x80123f000, argv=0x7fffffffdb10)
at /usr/src/usr.bin/make/job.c:1321
#4 0x000000000040702d in JobStart (gn=0x8006d9120, flags=Variable
"flags" is not available.
)
at /usr/src/usr.bin/make/job.c:1843
#5 0x000000000040b14c in MakeStartJobs () at
/usr/src/usr.bin/make/make.c:621
#6 0x000000000040b34c in Make_Run (targs=0x7fffffffe7f0)
at /usr/src/usr.bin/make/make.c:793
#7 0x000000000040a081 in main (argc=0, argv=0x0)
at /usr/src/usr.bin/make/main.c:1273
--
Bruce
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