On Sat, Jun 09, 2007 at 12:10:25PM +0400, Pavel Emelianov wrote:
> > * definitely better results for suka's patchset. suka's patchset is
> > also getting better results with unixbench on a 2.6.22-rc1-mm1 but
> > the values are really dispersed. can you confirm ?
> > * suka's patchset would benefit from some optimization in init_upid()
> > and dup_struct_pid()
>
> We have found the reason why Suka's patches showed better performance.
> Some time ago I sent a letter saying that proc_flush_task() actually
> never worked with his patches - that's the main problem. After removing
> this call from my patches the results turned to those similar to my.
>
> I'd also like to note that broken-out set of patches is not git bisect
> safe at all. The very first patch of his own OOPSes the node.
FWIW, it's EIP is at forget_original_parent+0x25 on boot
Process: khelper
exit_notify
do_exit
copy_vm86_regs_to_user
kernel_execve
____call_usermodehelper
...
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