On Thu, Jan 10, 2013 at 01:56:48AM -0500, Alfred Perlstein wrote: > Here are more convenient links that give diffs against FreeBSD and > jemalloc for the proposed changes: > > FreeBSD: > https://github.com/alfredperlstein/freebsd/compare/13e7228d5b83c8fcfc63a0803a374212018f6b68~1...utrace2 > Why do you need to expedite the records through the ktrace at all ? Wouldn't direct write(2)s to a file allow for better performance due to not stressing kernel memory allocator and single writing thread ? Also, the malloc coupling to the single-system interface would be prevented.
I believe that other usermode tracers also behave in the similar way, using writes and not private kernel interface. Also, what /proc issues did you mentioned ? There is sysctl kern.proc.vmmap which is much more convenient than /proc/pid/map and does not require /proc mounted. > jemalloc: > https://github.com/alfredperlstein/jemalloc/compare/master...utrace2 > > -Alfred > > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
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