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author | rpaulo <rpaulo@FreeBSD.org> | 2010-09-13 17:49:39 +0000 |
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committer | rpaulo <rpaulo@FreeBSD.org> | 2010-09-13 17:49:39 +0000 |
commit | be2b6e62ad5c71c969dcd35275ec0209d3d810de (patch) | |
tree | 57b8b16b73cc21150fd333e2bda1c850e32bee23 | |
parent | 418e75a88720c6c41f27f542c9d26f5dc69abeef (diff) | |
download | FreeBSD-src-be2b6e62ad5c71c969dcd35275ec0209d3d810de.zip FreeBSD-src-be2b6e62ad5c71c969dcd35275ec0209d3d810de.tar.gz |
Add a note about userland DTracing.
Sponsored by: The FreeBSD Foundation
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M UPDATING
-rw-r--r-- | UPDATING | 10 |
1 files changed, 10 insertions, 0 deletions
@@ -22,6 +22,16 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 9.x IS SLOW: machines to maximize performance. (To disable malloc debugging, run ln -s aj /etc/malloc.conf.) +20100913: + DTrace has grown support for userland tracing. Due to this, DTrace is + now i386 and amd64 only. + dtruss(1) is now installed by default on those systems and a new + kernel module is needed for userland tracing: fasttrap. + No changes to your kernel config file are necessary to enable + userland tracing, but you might consider adding 'STRIP=' and + 'CFLAGS+=-fno-omit-frame-pointer' to your make.conf if you want + to have informative userland stack traces in DTrace (ustack). + 20100725: The acpi_aiboost(4) driver has been removed in favor of the new aibs(4) driver. You should update your kernel configuration file. |