Messages in this thread | | | Date | Tue, 12 Jan 2016 13:50:16 +0000 | From | One Thousand Gnomes <> | Subject | Re: [RFC PATCH] alispinlock: acceleration from lock integration on multi-core platform |
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On Sat, 9 Jan 2016 06:44:15 +0800 Ling Ma <ling.ma.program@gmail.com> wrote:
> The attachment (alispinlock.tar.bz2) includes original spinlock and > alispinlock , > we compare them on 70 cores based on kernel 4.3, the alispinlock can > improve performance upto 3x. > > the link: https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1035940.html > indicates when we introduce the idea for real application(user space > application caused the bottle neck from kernel spinlock ) > the spinlock performance is improved by 1.9x (perf top -d1 also tell > us the spinlock cost time is reduced from 25% to 15%). > > Appreciate your comments
So this has not been applied to actual real kernel locks (ie converted some of the hot kernel locks to it) and then benchmarked with a real world workload. This is just for the theoretical locking overhead ?
Alan
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