[Bug other/42980] GCC parallel "make install" failures

[gary at intrepid dot com]

------- Comment #6 from gary at intrepid dot com  2010-02-22 17:48 -------
Created an attachment (id=19936)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19936&action=view)
parallel "make -j6 install" failure logs

Attached, a collection of install logs run with SHELL="/bin/sh -x", where the
install failed.  The first log is for a libgomp install failure, and the rest
are for libiberty.  Note that it is difficult to reproduce the failures.  I
found that "make -j6" led to more failures than "make -j" on our system.  Also,
couldn't get the install-target-libiberty target to fail, but perhaps didn't
wait long enough.  Instead, ran "make -j6 install".  Also, tried running this
test on a "ram fs", but couldn't make the installs fail, likely due to
different interlocks.  Similarly, the installs were more likely to fail on our
RAID-ed disk subsystem, populated with high speed drives, than on a file system
on a single drive. (These tests were run using the gcc-4.5-20100114 (gcc core)
snapshot.)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42980