One of the difficulties function reordering is getting useful data to
figure out a reasonable order for the functions. People do guess wrong
on the frequency of particular functions. Also naive ordering techniques
like just ordering functions based on frequency do not work well.
A North Carolina State University senior project was done to generate
ordering to improve TLB and cache hit ratios using the information
generated by valgrind for user-space programs:
http://www.bclennox.com/cgi-bin/show.cgi?page=home
Xen is running the domains (and kernels) in user-space. Would it be
possible to adapt valgrind/xen to run a domain so that similar
information could be collected about a particular kernel? Being able to
use valgrind on the kernel could allow other analysis of the kernel
code, e.g. find unwanted TLB flushes.
-Will
I am not subscribed to the list, so please cc me on responses.
-
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]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
| |
 |