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From: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Juri Lelli <juri.lelli@redhat.com>,
	Parth Shah <parth@linux.ibm.com>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
	Waiman Long <longman@redhat.com>,
	Ihor Pasichnyk <Ihor.Pasichnyk@ibm.com>
Subject: Re: [PATCH 1/2] powerpc/vcpu: Assume dedicated processors as non-preempt
Date: Wed, 4 Dec 2019 20:35:21 +0530
Message-ID: <20191204150521.GB4824@linux.vnet.ibm.com> (raw)
In-Reply-To: <20191204134459.22470-1-srikar@linux.vnet.ibm.com>

* Srikar Dronamraju <srikar@linux.vnet.ibm.com> [2019-12-04 19:14:58]:

> 
> 
>   # perf stat -a -r 5 ./schbench
> v5.4				                v5.4 + patch
> Latency percentiles (usec)                      Latency percentiles (usec)
> 	49.0000th: 47                           	50.0000th: 33
> 	74.0000th: 64                           	75.0000th: 44
> 	89.0000th: 76                           	90.0000th: 50
> 	94.0000th: 83                           	95.0000th: 53
> 	*98.0000th: 103                         	*99.0000th: 57
> 	98.5000th: 2124                         	99.5000th: 59
> 	98.9000th: 7976                         	99.9000th: 83
> 	min=-1, max=10519                       	min=0, max=117
> Latency percentiles (usec)                      Latency percentiles (usec)
> 	49.0000th: 45                           	50.0000th: 34
> 	74.0000th: 61                           	75.0000th: 45
> 	89.0000th: 70                           	90.0000th: 52
> 	94.0000th: 77                           	95.0000th: 56
> 	*98.0000th: 504                         	*99.0000th: 62
> 	98.5000th: 4012                         	99.5000th: 64
> 	98.9000th: 8168                         	99.9000th: 79
> 	min=-1, max=14500                       	min=0, max=123
> Latency percentiles (usec)                      Latency percentiles (usec)
> 	49.0000th: 48                           	50.0000th: 35
> 	74.0000th: 65                           	75.0000th: 47
> 	89.0000th: 76                           	90.0000th: 55
> 	94.0000th: 82                           	95.0000th: 59
> 	*98.0000th: 1098                        	*99.0000th: 67
> 	98.5000th: 3988                         	99.5000th: 71
> 	98.9000th: 9360                         	99.9000th: 98
> 	min=-1, max=19283                       	min=0, max=137
> Latency percentiles (usec)                      Latency percentiles (usec)
> 	49.0000th: 46                           	50.0000th: 35
> 	74.0000th: 63                           	75.0000th: 46
> 	89.0000th: 73                           	90.0000th: 53
> 	94.0000th: 78                           	95.0000th: 57
> 	*98.0000th: 113                         	*99.0000th: 63
> 	98.5000th: 2316                         	99.5000th: 65
> 	98.9000th: 7704                         	99.9000th: 83
> 	min=-1, max=17976                       	min=0, max=139
> Latency percentiles (usec)                      Latency percentiles (usec)
> 	49.0000th: 46                           	50.0000th: 34
> 	74.0000th: 62                           	75.0000th: 46
> 	89.0000th: 73                           	90.0000th: 53
> 	94.0000th: 79                           	95.0000th: 57
> 	*98.0000th: 97                          	*99.0000th: 64
> 	98.5000th: 1398                         	99.5000th: 70
> 	98.9000th: 8136                         	99.9000th: 100
> 	min=-1, max=10008                       	min=0, max=142
> 

Just to be clear, since these are latency values, lesser number is better.

-- 
Thanks and Regards
Srikar Dronamraju


  parent reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-04 13:44 Srikar Dronamraju
2019-12-04 13:44 ` [PATCH 2/2] powerpc/shared: Use static key to detect shared processor Srikar Dronamraju
2019-12-04 16:18   ` [PATCH v2 " Srikar Dronamraju
2019-12-04 15:05 ` Srikar Dronamraju [this message]
2019-12-04 16:58 ` [PATCH 1/2] powerpc/vcpu: Assume dedicated processors as non-preempt Waiman Long
2019-12-05  5:07 ` Gautham R Shenoy
2019-12-05  7:08 ` Juri Lelli

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