Hi there.  I ran a build of gcc-linaro-4.5+bzr99491 on ursa1 through 4
to see if there was any difference in build machines.  The following
tests had different results:

 * gcc.c-torture/compile/limits-structnest.c
 * gcc.dg/graphite/block-4.c
 * largefile.c
 * obj-c++.dg/template-5.mm
 * obj-c++.dg/template-5.mm
 * obj-c++.dg/template-6.mm
 * obj-c++.dg/template-6.mm
 * objc/execute/class-4.m

I suspect that they're all caused by running the testsuite in parallel
and the host running out of memory.  limits-structnest takes around
850 MB of RAM and passes on the machine with swap (ursa1) and fails on
the others.  block-4.c takes 2:35 to run and timed out on ursa1 and
passed on the others which may be due to ursa1 swapping heavily while
running a limit test in parallel.  The obj-c tests show various forms
of killed, and suggest that they were killed due to another process
taking all the memory.

I'll change the machines to use the full 1 G of memory, run the test
suite in sequential mode, and see how things go.  I haven't
investigated largefile.c - it's a PCH test and these fail randomly.

Regarding block-4.c, it takes 155 s to run which is too close to the
default 300 s for my taste.  Should we add a dg-timeout-factor 4.0 to
it similar to block-3.c?

-- Michael

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