Re: Re: Intel Core Duo. SMP kernel but still only 50% load while using make on ports...
Hello Bill, Thanks for your answer I have at my disposal an Inspiron 9400 with an Intel CoreFreeBSD 6.2 is installed and rebuilt to fit the processor. The kerne l is in SMP mode. I noticed something strange: When I compile using ma in the ports tree, I only have 50% load. CPU1 is used at CPU0 is idle... How do you know this? With 'top' I tried make -j2 but it did not work, Any idea? -j2 does not guarantee that you'll use both CPUs. It's entirely possible that the IO is slow enough that both of the processes are waiting on disk and only able to push the overall system usage to 50%. Try make -j99. Also, there are places in the build process where it's only possible to run one process at a time, so you can't just take a single snapshot of it, you have to watch it over time. I think it's more that the port tree does not really like parallel processes... I'm still not convinced anything is wrong: *) Does dmesg show the second CPU starting? Yes *) Does top show a column for CPU binding? Are different processes bound to different CPUs? Yes *) Are these hyperthreaded CPUs? If so, is hyperthreading enabled? HT is disabled by default on FreeBSD, and overall usage will never go above 50% if HT is off. No, it's a Dual Core Daniel Förena nytta med nöje. Koppla av och ha kul samtidigt som du har chansen att vinna pengar på din skicklighet. På Spray spel kan du tävla mot andra och den som är bäst kan vinna mycket pengar. Till spelen: http://www.spray.se/underhallning/spel/___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Re: Intel Core Duo. SMP kernel but still only 50% load while using make on ports...
I noticed something strange: When I compile using ma in the ports
tree, I only have 50% load. CPU1 is used at CPU0 is idle...
As was already pointed out, ports do not compile with make -j X by
default. You can do so for ports that will build cleanly (not all of
them will), by adding something similar to the following to your
make.conf:
.if ${.CURDIR:M*/ImageMagick*}
MAKE_ARGS+=-j4
.endif
A while back I found which ports I had installed that would play nice
with make -j, so I updated make.conf with a bunch of similar entries
to the above. Works fairly well, and there are actually quite a few
ports that will compile with make -j. If you're interested, let me
know and I'll throw my make.conf up somewhere.
Josh
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Re: Intel Core Duo. SMP kernel but still only 50% load while using make on ports...
In response to Josh Carroll [EMAIL PROTECTED]:
I noticed something strange: When I compile using ma in the ports
tree, I only have 50% load. CPU1 is used at CPU0 is idle...
As was already pointed out, ports do not compile with make -j X by
default. You can do so for ports that will build cleanly (not all of
them will), by adding something similar to the following to your
make.conf:
.if ${.CURDIR:M*/ImageMagick*}
MAKE_ARGS+=-j4
.endif
A while back I found which ports I had installed that would play nice
with make -j, so I updated make.conf with a bunch of similar entries
to the above. Works fairly well, and there are actually quite a few
ports that will compile with make -j. If you're interested, let me
know and I'll throw my make.conf up somewhere.
You know, it'd be cool if there were a knob in the ports framework that
allowed port maintainers to specify this, something like PARALLEL_MAKE=yes
in the Makefile ...
Or is that a dumb idea for some reason I don't understand?
--
Bill Moran
Collaborative Fusion Inc.
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Re: Intel Core Duo. SMP kernel but still only 50% load while using make on ports...
You know, it'd be cool if there were a knob in the ports framework that allowed port maintainers to specify this, something like PARALLEL_MAKE=yes in the Makefile ... Or is that a dumb idea for some reason I don't understand? I personally don't think it's a dumb idea at all. The problem is the sheer volume of ports out there. I don't see why the hooks couldn't be put in place, though, and let the port maintainers add to it slowly. Josh ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Intel Core Duo. SMP kernel but still only 50% load while using make on ports...
On Thu, 8 Feb 2007, Josh Carroll wrote: You know, it'd be cool if there were a knob in the ports framework that allowed port maintainers to specify this, something like PARALLEL_MAKE=yes in the Makefile ... Or is that a dumb idea for some reason I don't understand? I personally don't think it's a dumb idea at all. The problem is the sheer volume of ports out there. I don't see why the hooks couldn't be put in place, though, and let the port maintainers add to it slowly. Josh I agree with both you guys. Having this option would greatly reduce compile times which would be beneficial for everyone. -Garrett ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Intel Core Duo. SMP kernel but still only 50% load while using make on ports...
Hello, I have at my disposal an Inspiron 9400 with an Intel Core = Duo. FreeBSD 6.2 is installed and rebuilt to fit the processor. The kerne l is in SMP mode. I noticed something strange: When I compile using ma= ke, make install in the ports tree, I only have 50% load. CPU1 is used at= maximum but CPU0 is idle... I tried make -j2 but it did not work,= the ports did not even built... Any idea? How can I correct th= at? Thanks in advance, Daniel Läs det senaste om = alla våra kändisar. Var de har varit, vad det har gjort och med vem. = På Spray Mingel har vi full uppsikt. [1]Till Spray Mingel References 1. 3Dhttp://www.spray.se/liv___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Intel Core Duo. SMP kernel but still only 50% load while using make on ports...
In response to Daniel Tourde [EMAIL PROTECTED]: Hello, I have at my disposal an Inspiron 9400 with an Intel CoreFreeBSD 6.2 is installed and rebuilt to fit the processor. The kerne l is in SMP mode. I noticed something strange: When I compile using ma in the ports tree, I only have 50% load. CPU1 is used at CPU0 is idle... How do you know this? I tried make -j2 but it did not work, Any idea? -j2 does not guarantee that you'll use both CPUs. It's entirely possible that the IO is slow enough that both of the processes are waiting on disk and only able to push the overall system usage to 50%. Try make -j99. Also, there are places in the build process where it's only possible to run one process at a time, so you can't just take a single snapshot of it, you have to watch it over time. How can I correct th Thanks in advance, I'm still not convinced anything is wrong: *) Does dmesg show the second CPU starting? *) Does top show a column for CPU binding? Are different processes bound to different CPUs? *) Are these hyperthreaded CPUs? If so, is hyperthreading enabled? HT is disabled by default on FreeBSD, and overall usage will never go above 50% if HT is off. -- Bill Moran Collaborative Fusion Inc. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Intel Core Duo. SMP kernel but still only 50% load while using make on ports...
On Wed, Feb 07, 2007 at 04:44:42PM -0500, Bill Moran wrote: In response to Daniel Tourde [EMAIL PROTECTED]: Hello, I have at my disposal an Inspiron 9400 with an Intel CoreFreeBSD 6.2 is installed and rebuilt to fit the processor. The kerne l is in SMP mode. I noticed something strange: When I compile using ma in the ports tree, I only have 50% load. CPU1 is used at CPU0 is idle... How do you know this? I tried make -j2 but it did not work, Any idea? -j2 does not guarantee that you'll use both CPUs. It's entirely possible that the IO is slow enough that both of the processes are waiting on disk and only able to push the overall system usage to 50%. Try make -j99. make -j in the ports tree is not going to compile the source in parallel, it is going to try and run the port targets in parallel (but they cannot be parallelized so nothing special will happen). In theory it might work on some ports to pass in MAKE_ARGS=-j2, but a huge number of ports cannot be safely be compiled in parallel (i.e. the build will fail) because their developers have not added support for this. Kris pgpA6IMa1JtLH.pgp Description: PGP signature
Re: Intel Core Duo. SMP kernel but still only 50% load while using make on ports...
In response to Kris Kennaway [EMAIL PROTECTED]: On Wed, Feb 07, 2007 at 04:44:42PM -0500, Bill Moran wrote: In response to Daniel Tourde [EMAIL PROTECTED]: Hello, I have at my disposal an Inspiron 9400 with an Intel CoreFreeBSD 6.2 is installed and rebuilt to fit the processor. The kerne l is in SMP mode. I noticed something strange: When I compile using ma in the ports tree, I only have 50% load. CPU1 is used at CPU0 is idle... How do you know this? I tried make -j2 but it did not work, Any idea? -j2 does not guarantee that you'll use both CPUs. It's entirely possible that the IO is slow enough that both of the processes are waiting on disk and only able to push the overall system usage to 50%. Try make -j99. make -j in the ports tree is not going to compile the source in parallel, it is going to try and run the port targets in parallel (but they cannot be parallelized so nothing special will happen). In theory it might work on some ports to pass in MAKE_ARGS=-j2, but a huge number of ports cannot be safely be compiled in parallel (i.e. the build will fail) because their developers have not added support for this. Good point. I was assuming that you were doing make -j2 buildworld. -- Bill Moran Collaborative Fusion Inc. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
