Mailing List Archive: Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks

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Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks

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raghavendra.kt at linux

May 7, 2012, 3:58 AM

Views: 203
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Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks [In reply to]

On 05/07/2012 02:02 PM, Avi Kivity wrote:
> On 05/07/2012 11:29 AM, Ingo Molnar wrote:
>> This is looking pretty good and complete now - any objections
>> from anyone to trying this out in a separate x86 topic tree?
>
> No objections, instead an
>
> Acked-by: Avi Kivity<avi [at] redhat>
>

Thank you.

Here is a benchmark result with the patches.

3 guests with 8VCPU, 8GB RAM, 1 used for kernbench
(kernbench -f -H -M -o 20) other for cpuhog (shell script while
true with an instruction)

unpinned scenario
1x: no hogs
2x: 8hogs in one guest
3x: 8hogs each in two guest

BASE: 3.4-rc4 vanilla with CONFIG_PARAVIRT_SPINLOCK=n
BASE+patch: 3.4-rc4 + debugfs + pv patches with CONFIG_PARAVIRT_SPINLOCK=y

Machine : IBM xSeries with Intel(R) Xeon(R) x5570 2.93GHz CPU (Non PLE)
with 8 core , 64GB RAM

(Less is better. Below is time elapsed in sec for x86_64_defconfig (3+3
runs)).

BASE BASE+patch %improvement
mean (sd) mean (sd)
case 1x: 66.0566 (74.0304) 61.3233 (68.8299) 7.16552
case 2x: 1253.2 (1795.74) 131.606 (137.358) 89.4984
case 3x: 3431.04 (5297.26) 134.964 (149.861) 96.0664

Will be working on further analysis with other benchmarks
(pgbench/sysbench/ebizzy...) and further optimization.

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Subject	User	Time
[PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	May 2, 2012, 3:06 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	mingo at kernel	May 7, 2012, 1:29 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	avi at redhat	May 7, 2012, 1:32 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	May 7, 2012, 3:58 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	avi at redhat	May 7, 2012, 5:06 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	May 7, 2012, 6:20 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	avi at redhat	May 7, 2012, 6:22 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	May 7, 2012, 6:38 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	vatsa at linux	May 7, 2012, 6:46 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	avi at redhat	May 7, 2012, 6:49 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	May 7, 2012, 6:53 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	avi at redhat	May 7, 2012, 6:58 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	May 7, 2012, 7:47 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	avi at redhat	May 7, 2012, 7:52 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	avi at redhat	May 7, 2012, 7:54 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	mingo at kernel	May 7, 2012, 10:25 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	tglx at linutronix	May 7, 2012, 1:42 PM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	nikunj at linux	May 7, 2012, 11:46 PM
Re: [Xen-devel] [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	JBeulich at suse	May 15, 2012, 4:26 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	May 7, 2012, 10:25 PM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	May 13, 2012, 11:45 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	nikunj at linux	May 13, 2012, 9:57 PM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	May 14, 2012, 2:01 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	jeremy at goop	May 14, 2012, 12:38 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	May 14, 2012, 1:11 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	May 15, 2012, 8:19 PM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	May 30, 2012, 4:26 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	Jun 14, 2012, 5:21 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	vatsa at linux	May 7, 2012, 6:55 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	jeremy at goop	May 7, 2012, 4:15 PM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	May 7, 2012, 6:13 PM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	avi at redhat	May 8, 2012, 2:08 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	May 7, 2012, 6:56 AM
Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks	raghavendra.kt at linux	May 13, 2012, 10:59 AM

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