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Date: Thu, 20 Jun 2013 22:35:25 +0800
From: Bob Liu <lliubbo@...il.com>
To: Seth Jennings <sjenning@...ux.vnet.ibm.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Nitin Gupta <ngupta@...are.org>,
Minchan Kim <minchan@...nel.org>,
Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
Dan Magenheimer <dan.magenheimer@...cle.com>,
Robert Jennings <rcj@...ux.vnet.ibm.com>,
Jenifer Hopper <jhopper@...ibm.com>,
Mel Gorman <mgorman@...e.de>,
Johannes Weiner <jweiner@...hat.com>,
Rik van Riel <riel@...hat.com>,
Larry Woodman <lwoodman@...hat.com>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Dave Hansen <dave@...1.net>, Joe Perches <joe@...ches.com>,
Joonsoo Kim <iamjoonsoo.kim@....com>,
Cody P Schafer <cody@...ux.vnet.ibm.com>,
Hugh Dickens <hughd@...gle.com>,
Paul Mackerras <paulus@...ba.org>,
Linux-MM <linux-mm@...ck.org>,
Linux-Kernel <linux-kernel@...r.kernel.org>,
devel@...verdev.osuosl.org
Subject: Re: [PATCHv13 3/4] zswap: add to mm/
On Thu, Jun 20, 2013 at 10:23 PM, Seth Jennings
<sjenning@...ux.vnet.ibm.com> wrote:
> On Thu, Jun 20, 2013 at 05:42:04PM +0800, Bob Liu wrote:
>> > Just made a mmtests run of my own and got very different results:
>> >
>>
>> It's strange, I'll update to rc6 and try again.
>> By the way, are you using 824 hardware compressor instead of lzo?
>
> My results where using lzo software compression.
>
Thanks, and today I used another machine to test zswap.
The total ram size of that machine is around 4G.
This time the result is better:
rc6 rc6
zswap base
Ops memcachetest-0M 14619.00 ( 0.00%) 15602.00 ( 6.72%)
Ops memcachetest-435M 14727.00 ( 0.00%) 15860.00 ( 7.69%)
Ops memcachetest-944M 12452.00 ( 0.00%) 11812.00 ( -5.14%)
Ops memcachetest-1452M 12183.00 ( 0.00%) 9829.00 (-19.32%)
Ops memcachetest-1961M 11953.00 ( 0.00%) 9337.00 (-21.89%)
Ops memcachetest-2469M 11201.00 ( 0.00%) 7509.00 (-32.96%)
Ops memcachetest-2978M 9738.00 ( 0.00%) 5981.00 (-38.58%)
Ops io-duration-0M 0.00 ( 0.00%) 0.00 ( 0.00%)
Ops io-duration-435M 10.00 ( 0.00%) 6.00 ( 40.00%)
Ops io-duration-944M 19.00 ( 0.00%) 19.00 ( 0.00%)
Ops io-duration-1452M 31.00 ( 0.00%) 26.00 ( 16.13%)
Ops io-duration-1961M 40.00 ( 0.00%) 35.00 ( 12.50%)
Ops io-duration-2469M 45.00 ( 0.00%) 43.00 ( 4.44%)
Ops io-duration-2978M 58.00 ( 0.00%) 53.00 ( 8.62%)
Ops swaptotal-0M 56711.00 ( 0.00%) 8.00 ( 99.99%)
Ops swaptotal-435M 19218.00 ( 0.00%) 2101.00 ( 89.07%)
Ops swaptotal-944M 53233.00 ( 0.00%) 98055.00 (-84.20%)
Ops swaptotal-1452M 52064.00 ( 0.00%) 145624.00 (-179.70%)
Ops swaptotal-1961M 54960.00 ( 0.00%) 153907.00 (-180.03%)
Ops swaptotal-2469M 57485.00 ( 0.00%) 176340.00 (-206.76%)
Ops swaptotal-2978M 77704.00 ( 0.00%) 182996.00 (-135.50%)
Ops swapin-0M 24834.00 ( 0.00%) 8.00 ( 99.97%)
Ops swapin-435M 9038.00 ( 0.00%) 0.00 ( 0.00%)
Ops swapin-944M 26230.00 ( 0.00%) 42953.00 (-63.76%)
Ops swapin-1452M 25766.00 ( 0.00%) 68440.00 (-165.62%)
Ops swapin-1961M 27258.00 ( 0.00%) 68129.00 (-149.94%)
Ops swapin-2469M 28508.00 ( 0.00%) 82234.00 (-188.46%)
Ops swapin-2978M 37970.00 ( 0.00%) 89280.00 (-135.13%)
Ops minorfaults-0M 1460163.00 ( 0.00%) 927966.00 ( 36.45%)
Ops minorfaults-435M 954058.00 ( 0.00%) 936182.00 ( 1.87%)
Ops minorfaults-944M 972818.00 ( 0.00%) 1005956.00 ( -3.41%)
Ops minorfaults-1452M 966597.00 ( 0.00%) 1035465.00 ( -7.12%)
Ops minorfaults-1961M 976158.00 ( 0.00%) 1049441.00 ( -7.51%)
Ops minorfaults-2469M 967815.00 ( 0.00%) 1051752.00 ( -8.67%)
Ops minorfaults-2978M 988712.00 ( 0.00%) 1034615.00 ( -4.64%)
Ops majorfaults-0M 5899.00 ( 0.00%) 9.00 ( 99.85%)
Ops majorfaults-435M 2684.00 ( 0.00%) 67.00 ( 97.50%)
Ops majorfaults-944M 4380.00 ( 0.00%) 5790.00 (-32.19%)
Ops majorfaults-1452M 4161.00 ( 0.00%) 9222.00 (-121.63%)
Ops majorfaults-1961M 4435.00 ( 0.00%) 8800.00 (-98.42%)
Ops majorfaults-2469M 4555.00 ( 0.00%) 10541.00 (-131.42%)
Ops majorfaults-2978M 6182.00 ( 0.00%) 11618.00 (-87.93%)
But the performance of the first machine I used whose total ram size
is 2G is still bad.
I need more time to summarize those testing results.
Maybe you can also have a try with lower total ram size.
--
Regards,
--Bob
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