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 [thread overview]
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
next prev parent reply other threads:[~2019-12-04 15:07 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-04 13:44 [PATCH 1/2] powerpc/vcpu: Assume dedicated processors as non-preempt 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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