Date: Wed, 27 Oct 2010 16:19:01 -0400 From: Mike Tancsa <mike@sentex.net> To: Ivan Voras <ivoras@freebsd.org>, performance@freebsd.org Subject: Re: Possible evidence of performance regression for 8.1-S (vs. 7.1) Message-ID: <201010272018.o9RKItXi047758@lava.sentex.ca> In-Reply-To: <201010271936.o9RJaaDF047543@lava.sentex.ca> References: <20101021215330.GA86224@dan.emsphone.com> <20101021224237.GG52404@albert.catwhisker.org> <4CC6C396.1010905@freebsd.org> <20101026174501.GH2262@albert.catwhisker.org> <ia8srt$th0$1@dough.gmane.org> <20101027105506.GD9443@albert.catwhisker.org> <ia9137$gag$1@dough.gmane.org> <20101027111904.GF9443@albert.catwhisker.org> <ia9263$kkd$1@dough.gmane.org> <201010271546.o9RFkRQn046373@lava.sentex.ca> <20101027163417.GI9443@albert.catwhisker.org> <201010271705.o9RH5Auc046763@lava.sentex.ca> <201010271936.o9RJaaDF047543@lava.sentex.ca>
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At 03:36 PM 10/27/2010, Mike Tancsa wrote:
>At 01:05 PM 10/27/2010, Mike Tancsa wrote:
>>At 12:34 PM 10/27/2010, David Wolfskill wrote:
>>
>>>* release/7.1.0, with the following merged in:
>>> r186860 from stable/7
>>> r190970 from stable/7
>>> r203072 from head
>>> r209964 from stable/7
>>> and using the MAC kernel config
>>>
>>>* stable/8 @r214029 using the GENERIC kernel config
>>
>>OK.
>>I was using GENERIC vs GENERIC from RELENG7 and RELENG8 from
>>today. MAC is in by default in RELENG_8
One bright spot on the file IO is the AHCI driver when the test is
done with much larger data. Instead of 3G of test data I ran 6G....
I am guessing AHCI does better due to the command re-ordering
RELENG8
Running the test with following options:
Number of threads: 16
Extra file open flags: 0
128 files, 48Mb each
6Gb total file size
Block size 16Kb
Number of random requests for random IO: 10000
Read/Write ratio for combined random IO test: 1.50
Periodic FSYNC enabled, calling fsync() each 100 requests.
Calling fsync() at the end of test, Enabled.
Using synchronous I/O mode
Doing random r/w test
Threads started!
Done.
RELENG8 (AHCI)
Operations performed: 6005 Read, 3995 Write, 12800 Other = 22800 Total
Read 93.828Mb Written 62.422Mb Total transferred
156.25Mb (2.306Mb/sec) 147.58 Requests/sec executed
Read 93.844Mb Written 62.406Mb Total transferred
156.25Mb (3.182Mb/sec) 203.68 Requests/sec executed
Read 93.75Mb Written 62.5Mb Total transferred
156.25Mb (5.039Mb/sec) 322.53 Requests/sec executed
Read 93.781Mb Written 62.469Mb Total transferred
156.25Mb (3.470Mb/sec) 222.12 Requests/sec executed
Read 93.719Mb Written 62.531Mb Total transferred
156.25Mb (4.839Mb/sec) 309.72 Requests/sec executed
vs
RELENG7
Read 93.781Mb Written 62.469Mb Total transferred
156.25Mb (1.52Mb/sec) 97.67 Requests/sec executed
Read 93.812Mb Written 62.438Mb Total transferred
156.25Mb (2.031Mb/sec) 130.00 Requests/sec executed
Read 93.781Mb Written 62.469Mb Total transferred
156.25Mb (1.834Mb/sec) 117.40 Requests/sec executed
Read 93.75Mb Written 62.5Mb Total transferred
156.25Mb (5.065Mb/sec) 324.16 Requests/sec executed
Read 93.797Mb Written 62.453Mb Total transferred
156.25Mb (4.960Mb/sec) 317.46 Requests/sec executed
---Mike
--------------------------------------------------------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike@sentex.net
Providing Internet since 1994 www.sentex.net
Cambridge, Ontario Canada www.sentex.net/mike
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