Ken Moffat wrote:
Last night I built shared-mime-info-1.5 on my Kaveri. All previous
builds there had used earlier versions. Trying to build using make
-j5 -O it failed :
config.status: executing po/stamp-it commands
GEN create-pot
Making check in .
make[1]: 'shared-mime-info.pot' is up to date.
make[1]: Entering directory '/scratch/working/shared-mime-info-1.5'
CC test_subclassing-test-subclassing.o
make[1]: Leaving directory '/scratch/working/shared-mime-info-1.5'
make[1]: Entering directory '/scratch/working/shared-mime-info-1.5'
CC test_tree_magic-test-tree-magic.o
make[1]: Leaving directory '/scratch/working/shared-mime-info-1.5'
CC update_mime_database-update-mime-database.o
make[1]: Entering directory '/scratch/working/shared-mime-info-1.5'
CC update_mime_database-update-mime-database.o
mv: cannot stat '.deps/update_mime_database-update-mime-database.Tpo': No such
file or directory
And it repeatedly fails like that on the Kaveri, but is ok with -j1.
Oddly, I have built it at least three times on the haswell, all
using make -j8 -O.
For the moment, I'm merely remarking this and switching to -j1 for
all *my* future builds (I cannot be bothered to do test runs on the
other two boxen when I eventually get to them, the time lost by
building with -j1 will only be a few seconds). And since -j8 works
on my haswell I don't - for the moment - feel inclined to try to
change the book.
But I never expected that a "middling" processor (top-end AMD APU)
would highlight something like this. Why do I build with -j5
instead of -j4 there ? I begin to wonder ;-) Actually I tried -j5
(cores+1) when I got an SSD, to make sure it was fully loaded.
Building the current kernel there with -j4 took six minutes, so I
figured that any gains offered by -j5 should be grabbed with both
hands. I'm sure the kernel build on the Kaveri, albeit without all
the RAID options, was *much* faster back in November.
I haven't done shared-mime-info yet this cycle and the last one was
version 1.4, but it tool 0.081 SBU at -j1. I generally don't bother
adjusting -j unless it is about 0.4 SBU or more. Even on a relatively
slow system, that's still only about a minute and many times the configure
script takes a fair percentage of that.
-- Bruce
--
http://lists.linuxfromscratch.org/listinfo/blfs-dev
FAQ: http://www.linuxfromscratch.org/blfs/faq.html
Unsubscribe: See the above information page
