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Date: Wed, 18 Nov 2009 18:14:48 -0500 From: Vivek Goyal <vgoyal@...hat.com> To: "Alan D. Brunelle" <Alan.Brunelle@...com> Cc: Jens Axboe <jens.axboe@...cle.com>, linux-kernel@...r.kernel.org Subject: Re: [RFC] Block IO Controller V3 - some results On Wed, Nov 18, 2009 at 09:30:35AM -0500, Alan D. Brunelle wrote: > I've added in the base OS results. Haven't analyzed them fully (on > vacation :-) ) but it looks like we do lose some performance (first > table) and some oddities in apportionment proportions... > Thanks for all the testing Alan. With more groups we will loose some performance because of additional idling and need for isolation. I guess I can not completely avoid it but the current pure random IO loss seems to be too high to bear. Let me first sort that out. I am working on some patches and doing testing. Once that is done, please take the new patchset and try it again. Thanks Vivek > ---- ---- - --------- --------- --------- --------- --------- > Mode RdWr N base i1,g1,s8 i1,g0,s8 i1,g1,s0 i1,g0,s0 > ---- ---- - --------- --------- --------- --------- --------- > rnd rd 2 37.8 33.7 33.2 33.2 33.2 > rnd rd 4 37.1 28.6 26.8 26.7 26.7 > rnd rd 8 39.5 20.8 17.6 17.8 17.7 > > rnd wr 2 59.9 57.4 55.8 55.9 55.8 > rnd wr 4 59.4 52.1 47.8 47.6 47.6 > rnd wr 8 58.3 41.6 30.8 30.7 30.7 > > rnd rdwr 2 44.6 39.0 38.3 38.3 38.5 > rnd rdwr 4 44.6 33.2 30.5 30.4 30.7 > rnd rdwr 8 47.8 24.0 19.0 19.2 19.5 > > seq rd 2 610.4 609.5 609.6 608.4 608.5 > seq rd 4 612.4 612.1 612.3 613.5 613.7 > seq rd 8 615.2 614.8 615.4 616.3 616.2 > > seq wr 2 719.1 716.2 722.7 732.2 736.9 > seq wr 4 709.1 710.5 734.2 737.4 734.4 > seq wr 8 696.4 700.6 714.0 720.1 715.8 > > seq rdwr 2 699.8 666.7 669.1 673.4 673.1 > seq rdwr 4 672.5 668.1 668.5 667.5 667.9 > seq rdwr 8 675.3 674.0 674.9 675.6 676.2 > > =============================================================== > > ----------- ---- ---- - ----- ----- ----- ----- ----- ----- ----- ----- > Test Mode RdWr N test0 test1 test2 test3 test4 test5 test6 test7 > ----------- ---- ---- - ----- ----- ----- ----- ----- ----- ----- ----- > base rnd rd 2 18.8 19.1 > base rnd rd 4 9.9 9.8 9.2 8.2 > base rnd rd 8 4.9 5.0 4.9 5.0 4.9 4.9 4.8 5.0 > > base rnd wr 2 22.4 37.5 > base rnd wr 4 15.4 14.4 15.4 14.2 > base rnd wr 8 7.6 6.9 7.2 7.4 7.3 7.4 7.2 7.4 > > base rnd rdwr 2 21.1 23.5 > base rnd rdwr 4 11.1 11.6 10.7 11.3 > base rnd rdwr 8 6.0 6.0 6.1 6.0 5.8 5.8 6.1 5.8 > > > base seq rd 2 306.1 304.3 > base seq rd 4 153.2 151.9 152.7 154.5 > base seq rd 8 80.7 75.6 76.7 76.0 76.8 76.1 77.8 75.4 > > base seq wr 2 358.9 360.2 > base seq wr 4 179.7 176.6 175.0 177.7 > base seq wr 8 88.2 84.5 88.0 86.1 86.0 88.4 86.3 88.9 > > base seq rdwr 2 350.1 349.7 > base seq rdwr 4 164.2 178.3 164.1 166.0 > base seq rdwr 8 83.4 84.9 84.0 81.2 87.4 83.5 85.1 85.8 > > ----------- ---- ---- - ----- ----- ----- ----- ----- ----- ----- ----- > Test Mode RdWr N test0 test1 test2 test3 test4 test5 test6 test7 > ----------- ---- ---- - ----- ----- ----- ----- ----- ----- ----- ----- > i1,g1,s8 rnd rd 2 11.1 22.6 > i1,g1,s8 rnd rd 4 0.8 2.6 10.4 14.8 > i1,g1,s8 rnd rd 8 0.4 0.7 1.0 1.4 2.0 3.2 5.3 6.8 > > i1,g1,s8 rnd wr 2 12.2 45.3 > i1,g1,s8 rnd wr 4 0.6 1.3 16.7 33.5 > i1,g1,s8 rnd wr 8 0.3 0.5 0.7 0.9 1.4 2.2 11.7 24.0 > > i1,g1,s8 rnd rdwr 2 12.6 26.4 > i1,g1,s8 rnd rdwr 4 0.7 2.2 12.3 18.0 > i1,g1,s8 rnd rdwr 8 0.3 0.5 0.8 1.2 1.8 3.5 7.1 8.7 > > > i1,g1,s8 seq rd 2 234.7 374.8 > i1,g1,s8 seq rd 4 89.7 130.1 171.8 220.4 > i1,g1,s8 seq rd 8 34.7 59.1 65.2 74.6 85.4 89.8 97.9 108.1 > > i1,g1,s8 seq wr 2 264.4 451.9 > i1,g1,s8 seq wr 4 98.4 151.5 203.8 256.8 > i1,g1,s8 seq wr 8 37.7 65.0 74.3 86.5 96.0 102.8 113.7 124.6 > > i1,g1,s8 seq rdwr 2 240.0 426.7 > i1,g1,s8 seq rdwr 4 92.3 139.5 191.0 245.3 > i1,g1,s8 seq rdwr 8 33.7 59.7 68.0 80.2 94.1 103.2 111.9 123.3 > > ----------- ---- ---- - ----- ----- ----- ----- ----- ----- ----- ----- > Test Mode RdWr N test0 test1 test2 test3 test4 test5 test6 test7 > ----------- ---- ---- - ----- ----- ----- ----- ----- ----- ----- ----- > i1,g0,s8 rnd rd 2 12.1 21.1 > i1,g0,s8 rnd rd 4 2.2 5.8 8.1 10.7 > i1,g0,s8 rnd rd 8 1.2 1.3 1.6 2.2 2.3 2.5 3.1 3.4 > > i1,g0,s8 rnd wr 2 21.1 34.7 > i1,g0,s8 rnd wr 4 11.9 12.2 11.9 11.9 > i1,g0,s8 rnd wr 8 4.0 4.0 4.0 3.9 3.8 3.7 3.7 3.6 > > i1,g0,s8 rnd rdwr 2 13.9 24.3 > i1,g0,s8 rnd rdwr 4 3.1 7.5 9.3 10.5 > i1,g0,s8 rnd rdwr 8 1.5 1.6 1.8 2.2 2.5 2.7 3.4 3.3 > > > i1,g0,s8 seq rd 2 264.1 345.4 > i1,g0,s8 seq rd 4 92.7 133.2 169.1 217.3 > i1,g0,s8 seq rd 8 41.5 64.5 67.1 76.1 85.0 84.6 91.0 105.5 > > i1,g0,s8 seq wr 2 319.1 403.6 > i1,g0,s8 seq wr 4 108.4 164.0 210.2 251.6 > i1,g0,s8 seq wr 8 50.8 72.3 78.5 87.3 94.2 99.9 109.0 122.0 > > i1,g0,s8 seq rdwr 2 267.4 401.7 > i1,g0,s8 seq rdwr 4 94.0 138.5 191.8 244.3 > i1,g0,s8 seq rdwr 8 38.9 61.5 72.2 83.0 95.1 100.1 106.0 118.1 > > ----------- ---- ---- - ----- ----- ----- ----- ----- ----- ----- ----- > Test Mode RdWr N test0 test1 test2 test3 test4 test5 test6 test7 > ----------- ---- ---- - ----- ----- ----- ----- ----- ----- ----- ----- > i1,g0,s8 rnd rd 2 12.1 21.1 > i1,g0,s8 rnd rd 4 2.2 5.8 8.1 10.7 > i1,g0,s8 rnd rd 8 1.2 1.3 1.6 2.2 2.3 2.5 3.1 3.4 > > i1,g0,s8 rnd wr 2 21.1 34.7 > i1,g0,s8 rnd wr 4 11.9 12.2 11.9 11.9 > i1,g0,s8 rnd wr 8 4.0 4.0 4.0 3.9 3.8 3.7 3.7 3.6 > > i1,g0,s8 rnd rdwr 2 13.9 24.3 > i1,g0,s8 rnd rdwr 4 3.1 7.5 9.3 10.5 > i1,g0,s8 rnd rdwr 8 1.5 1.6 1.8 2.2 2.5 2.7 3.4 3.3 > > > i1,g0,s8 seq rd 2 264.1 345.4 > i1,g0,s8 seq rd 4 92.7 133.2 169.1 217.3 > i1,g0,s8 seq rd 8 41.5 64.5 67.1 76.1 85.0 84.6 91.0 105.5 > > i1,g0,s8 seq wr 2 319.1 403.6 > i1,g0,s8 seq wr 4 108.4 164.0 210.2 251.6 > i1,g0,s8 seq wr 8 50.8 72.3 78.5 87.3 94.2 99.9 109.0 122.0 > > i1,g0,s8 seq rdwr 2 267.4 401.7 > i1,g0,s8 seq rdwr 4 94.0 138.5 191.8 244.3 > i1,g0,s8 seq rdwr 8 38.9 61.5 72.2 83.0 95.1 100.1 106.0 118.1 > > ----------- ---- ---- - ----- ----- ----- ----- ----- ----- ----- ----- > Test Mode RdWr N test0 test1 test2 test3 test4 test5 test6 test7 > ----------- ---- ---- - ----- ----- ----- ----- ----- ----- ----- ----- > i1,g1,s0 rnd rd 2 12.1 21.1 > i1,g1,s0 rnd rd 4 2.4 6.3 8.4 9.5 > i1,g1,s0 rnd rd 8 1.0 1.4 1.7 2.1 2.5 2.7 3.1 3.4 > > i1,g1,s0 rnd wr 2 21.8 34.1 > i1,g1,s0 rnd wr 4 12.6 12.4 11.4 11.2 > i1,g1,s0 rnd wr 8 5.0 4.5 3.9 3.7 3.5 3.4 3.4 3.3 > > i1,g1,s0 rnd rdwr 2 14.1 24.2 > i1,g1,s0 rnd rdwr 4 3.6 7.7 9.0 10.1 > i1,g1,s0 rnd rdwr 8 1.2 1.7 1.9 2.2 2.4 2.8 3.3 3.8 > > > i1,g1,s0 seq rd 2 299.7 308.7 > i1,g1,s0 seq rd 4 102.6 159.5 171.3 180.2 > i1,g1,s0 seq rd 8 60.2 71.0 61.8 65.6 73.4 87.3 96.9 100.3 > > i1,g1,s0 seq wr 2 351.3 380.9 > i1,g1,s0 seq wr 4 119.1 181.9 206.2 230.2 > i1,g1,s0 seq wr 8 63.9 74.9 74.0 81.3 92.2 101.3 111.7 120.8 > > i1,g1,s0 seq rdwr 2 296.1 377.4 > i1,g1,s0 seq rdwr 4 99.8 137.6 188.5 241.7 > i1,g1,s0 seq rdwr 8 53.9 64.7 70.5 82.5 92.9 92.5 102.0 116.6 > > ----------- ---- ---- - ----- ----- ----- ----- ----- ----- ----- ----- > Test Mode RdWr N test0 test1 test2 test3 test4 test5 test6 test7 > ----------- ---- ---- - ----- ----- ----- ----- ----- ----- ----- ----- > i1,g0,s0 rnd rd 2 12.3 20.9 > i1,g0,s0 rnd rd 4 2.6 6.5 7.8 9.8 > i1,g0,s0 rnd rd 8 1.0 1.4 1.7 2.1 2.4 2.7 3.2 3.4 > > i1,g0,s0 rnd wr 2 21.7 34.2 > i1,g0,s0 rnd wr 4 13.8 11.9 11.1 10.8 > i1,g0,s0 rnd wr 8 5.1 4.5 3.9 3.6 3.5 3.4 3.3 3.3 > > i1,g0,s0 rnd rdwr 2 14.1 24.4 > i1,g0,s0 rnd rdwr 4 3.9 7.6 8.4 10.8 > i1,g0,s0 rnd rdwr 8 1.1 1.6 1.9 2.3 2.6 3.0 3.3 3.6 > > > i1,g0,s0 seq rd 2 300.0 308.5 > i1,g0,s0 seq rd 4 101.8 160.1 171.4 180.4 > i1,g0,s0 seq rd 8 61.3 71.7 61.3 65.6 73.9 85.5 96.4 100.4 > > i1,g0,s0 seq wr 2 354.1 382.8 > i1,g0,s0 seq wr 4 117.6 182.2 206.1 228.4 > i1,g0,s0 seq wr 8 64.5 75.1 75.7 81.3 90.3 100.4 110.0 118.5 > > i1,g0,s0 seq rdwr 2 297.8 375.3 > i1,g0,s0 seq rdwr 4 100.1 137.8 190.6 239.3 > i1,g0,s0 seq rdwr 8 54.4 64.1 71.1 81.9 92.7 93.0 103.2 115.9 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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