Re: [patch] i386: use thread_info flags for debug regs and IO bitmaps

On Sun, 9 Jul 2006, Chuck Ebbert wrote:
> 
> After I saw a ~7% gain in task-switch performance, I like it now
> even without perfmon2 in there.

So is the 7% performance gain visible with just that single patch 
(presumably because it avoids a cache miss associated with reading the 
processor state further away?)

If you have performance improvement numbers for just this one patch, I 
have no objections (but it would be good to then make those numbers part 
of the commit message).

			Linus
-
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/

---

• Follow-Ups:
  • Re: [patch] i386: use thread_info flags for debug regs and IO bitmaps
    • From: Andi Kleen <[email protected]>

• References:
  • Re: [patch] i386: use thread_info flags for debug regs and IO bitmaps
    • From: Chuck Ebbert <[email protected]>

• Prev by Date: Re: [BUG] APM resume breakage from 2.6.18-rc1 clocksource changes
• Next by Date: Re: [PATCH 2.6.18-rc1 1/1] arch/x86-64: A few trivial spelling and grammar fixes
• Previous by thread: Re: [patch] i386: use thread_info flags for debug regs and IO bitmaps
• Next by thread: Re: [patch] i386: use thread_info flags for debug regs and IO bitmaps
• Index(es):
  • Date
  • Thread

[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]