Matt wrote:
> Previous iterations of task watchers would prevent the code in these
> paths from being inlined. Furthermore, the code certainly wouldn't be
> placed near the table of function pointers (which was in an entirely
> different ELF section). By placing them adjacent to each other in the
> same ELF section we can improve the likelihood of cache hits in
> fork-heavy workloads (which were the ones that showed a performance
> decrease in the previous iteration of these patches).
Ah so - by marking some of the fork (and exit, exec, ...) routines
with the WATCH_TASK_* mechanism, you can compact them together in the
kernel's text pages, instead of having them scattered about based on
whatever source files they are in.
Nice.
--
I won't rest till it's the best ...
Programmer, Linux Scalability
Paul Jackson <[email protected]> 1.925.600.0401
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
