[Gluster-users] Slow read performance
Jeff Anderson-Lee
jonah at eecs.berkeley.edu
Fri Mar 1 01:42:09 UTC 2013
Thomas,
You have not specified a block size, so you are doing a huge number of
small(ish) reads with associated round trips. What happens with dd
bs=128k ..?
Jeff Anderson-Lee
On 2/28/2013 5:30 PM, Thomas Wakefield wrote:
> Did a fresh dd test just to confirm, same results:
>
> [root at cpu_crew1 benchmark]# dd if=/dev/zero
> of=/shared/working/benchmark/test.cpucrew1 bs=512k count=10000
> 10000+0 records in
> 10000+0 records out
> 5242880000 bytes (5.2 GB) copied, 7.43695 seconds, 705 MB/s
> [root at cpu_crew1 benchmark]# dd
> if=/shared/working/benchmark/test.cpucrew1 of=/dev/null
> 552126+0 records in
> 552125+0 records out
> 282688000 bytes (283 MB) copied, 37.8514 seconds, 7.5 MB/s
>
>
>
> On Feb 28, 2013, at 8:14 PM, Bryan Whitehead <driver at megahappy.net
> <mailto:driver at megahappy.net>> wrote:
>
>> How are you doing the reading? Is this still an iozone benchmark?
>>
>> if you simply dd if=/glustermount/bigfile of=/dev/null, is the speed
>> better?
>>
>>
>> On Thu, Feb 28, 2013 at 5:05 PM, Thomas Wakefield <twake at iges.org
>> <mailto:twake at iges.org>> wrote:
>>
>> I get great speed locally, it's only when I add gluster in that
>> it slows down. I get 2GB/s locally to the exact same brick.
>> It's gluster that is having the read issue (80MB/s). But
>> Gluster can write just fine, 800MB/s.
>>
>> The blockdev idea is a good one, and I have already done it.
>> Thanks though.
>>
>> -Tom
>>
>> On Feb 28, 2013, at 7:53 PM, Ling Ho <ling at slac.stanford.edu
>> <mailto:ling at slac.stanford.edu>> wrote:
>>
>>> Tom,
>>>
>>> What type of disks do you have? If they are raid 5 or 6, have
>>> you try setting the read-ahead size to 8192 or 16384 (blockdev
>>> --setra 8192 /dev/<sd?> ?
>>>
>>> ...
>>> ling
>>>
>>> On 02/28/2013 04:23 PM, Thomas Wakefield wrote:
>>>> Did anyone else have any ideas on performance tuning for reads?
>>>>
>>>> On Feb 27, 2013, at 9:29 PM, Thomas Wakefield <twake at iges.org
>>>> <mailto:twake at iges.org>> wrote:
>>>>
>>>>> Bryan-
>>>>>
>>>>> Yes I can write at 700-800MBytes/sec, but i can only read at
>>>>> *70-80 MBytes/sec*. I would be very happy if I could get it
>>>>> to read at the same speed it can write at. And the 70-80 is
>>>>> sequential, not random for reads, same exact test commands on
>>>>> the disk server are in the 2+GB/s range, so I know the disk
>>>>> server can do it.
>>>>>
>>>>> -Tom
>>>>>
>>>>>
>>>>> On Feb 27, 2013, at 7:41 PM, Bryan Whitehead
>>>>> <driver at megahappy.net <mailto:driver at megahappy.net>> wrote:
>>>>>
>>>>>> Are your figures 700-800M*Byte*/sec? Because that is probably
>>>>>> as fast as your 10G nic cards are able to do. You can test
>>>>>> that by trying to push a large amount of data over nc or ftp.
>>>>>>
>>>>>> Might want to try Infiniband. 40G cards are pretty routine.
>>>>>>
>>>>>>
>>>>>> On Wed, Feb 27, 2013 at 3:45 PM, Thomas Wakefield
>>>>>> <twake at iges.org <mailto:twake at iges.org>> wrote:
>>>>>>
>>>>>> I also get the same performance running iozone for large
>>>>>> file sizes, iozone -u 1 -r 512k -s 2G -I -F.
>>>>>>
>>>>>> Large file IO is what I need the system to do. I am just
>>>>>> shocked at the huge difference between local IO and
>>>>>> gluster client IO. I know there should be some
>>>>>> difference, but 10x is unacceptable.
>>>>>>
>>>>>> -Tom
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Feb 27, 2013, at 5:31 PM, Bryan Whitehead
>>>>>> <driver at megahappy.net <mailto:driver at megahappy.net>> wrote:
>>>>>>
>>>>>>> Every time you open/close a file or a directory you will
>>>>>>> have to wait for locks which take time. This is totally
>>>>>>> expected.
>>>>>>>
>>>>>>> Why don't you share what you want to do? iozone
>>>>>>> benchmarks look like crap but serving qcow2 files to
>>>>>>> qemu works fantastic for me. What are you doing? Make a
>>>>>>> benchmark that does that. If you are going to have many
>>>>>>> files with a wide variety of sizes glusterfs/fuse might
>>>>>>> not be what you are looking for.
>>>>>>>
>>>>>>>
>>>>>>> On Wed, Feb 27, 2013 at 12:56 PM, Thomas Wakefield
>>>>>>> <twake at cola.iges.org <mailto:twake at cola.iges.org>> wrote:
>>>>>>>
>>>>>>> I have tested everything, small and large files. I
>>>>>>> have used file sizes ranging from 128k up to
>>>>>>> multiple GB files. All the reads are bad.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Here is a fairly exhaustive iozone auto test:
>>>>>>>
>>>>>>> random random bkwd record stride
>>>>>>> KB reclen write rewrite read reread read
>>>>>>> write read rewrite read fwrite frewrite fread
>>>>>>> freread
>>>>>>> 64 4 40222 63492 26868 30060 1620
>>>>>>> 71037 1572 70570 31294 77096 72475 14736
>>>>>>> 13928
>>>>>>> 64 8 99207 116366 13591 13513 3214
>>>>>>> 97690 3155 109978 28920 152018 158480
>>>>>>> 18936 17625
>>>>>>> 64 16 230257 253766 25156 28713 10867
>>>>>>> 223732 8873 244297 54796 303383 312204
>>>>>>> 15062 13545
>>>>>>> 64 32 255943 234481 5735102 7100397
>>>>>>> 11897 318502 13681 347801 24214 695778 528618
>>>>>>> 25838 28094
>>>>>>> 64 64 214096 681644 6421025 7100397
>>>>>>> 27453 292156 28117 621657 27338 376062 512471
>>>>>>> 28569 32534
>>>>>>> 128 4 74329 75468 26428
>>>>>>> <tel:75468%20%C2%A0%20%C2%A026428> 41089 1131
>>>>>>> 72857 1118 66976 1597 73778 78343 13351
>>>>>>> 13026
>>>>>>> 128 8 100862 135170 24966
>>>>>>> <tel:135170%20%C2%A0%20%C2%A024966> 16734 2617
>>>>>>> 118966 2560 120406 39156 125121 146613
>>>>>>> 16177 16180
>>>>>>> 128 16 115114 253983 28212 17854 5307
>>>>>>> 246180 5431 229843 47335 255920 271173
>>>>>>> 27256 24445
>>>>>>> 128 32 256042 391360 39848 64258 11329
>>>>>>> 290230 9905 429563 38176 490380 463696
>>>>>>> 20917 19219
>>>>>>> 128 64 248573 592699 4557257 6812590
>>>>>>> 19583 452366 29263 603357 42967 814915 692017
>>>>>>> 76327 37604
>>>>>>> 128 128 921183 526444 5603747 5379161
>>>>>>> 45614 390222 65441 826202 41384 662962 1040839
>>>>>>> 78526 39023
>>>>>>> 256 4 76212 77337 40295
>>>>>>> <tel:77337%20%C2%A0%20%C2%A040295> 32125 1289
>>>>>>> 71866 1261 64645 1436 57309 53048 23073
>>>>>>> 29550
>>>>>>> 256 8 126922 141976 26237
>>>>>>> <tel:141976%20%C2%A0%20%C2%A026237> 25130 2566
>>>>>>> 128058 2565 138981 2985 125060 133603
>>>>>>> 22840 24955
>>>>>>> 256 16 242883 263636 41850 24371 4902
>>>>>>> 250009 5290 248792 89353 243821 247303
>>>>>>> 26965 26199
>>>>>>> 256 32 409074 439732 40101 39335 11953
>>>>>>> 436870 11209 430218 83743 409542 479390
>>>>>>> 30821 27750
>>>>>>> 256 64 259935 571502 64840 71847 22537
>>>>>>> <tel:71847%20%C2%A0%2022537> 617161 23383 392047
>>>>>>> 91852 672010 802614 41673 53111
>>>>>>> 256 128 847597 812329 185517 83198 49383
>>>>>>> <tel:83198%20%C2%A0%2049383> 708831 44668 794889
>>>>>>> 74267 1180188 1662639 54303 41018
>>>>>>> 256 256 481324 709299 5217259 5320671
>>>>>>> 44668 719277 40954 808050 41302 790209 771473
>>>>>>> 62224 35754
>>>>>>> 512 4 77667 75226 35102 29696 1337
>>>>>>> 66262 1451 67680 1413 69265 69142 42084
>>>>>>> 27897
>>>>>>> 512 8 134311 144341 30144
>>>>>>> <tel:144341%20%C2%A0%20%C2%A030144> 24646 2102
>>>>>>> 134143 2209 134699 2296 108110 128616
>>>>>>> 25104 29123
>>>>>>> 512 16 200085 248787 30235 25697 4196
>>>>>>> 247240 4179 256116 4768 250003 226436
>>>>>>> 32351 28455
>>>>>>> 512 32 330341 439805 26440 39284 8744
>>>>>>> 457611 8006 424168 125953 425935 448813
>>>>>>> 27660 26951
>>>>>>> 512 64 483906 733729 48747 41121 16032
>>>>>>> 555938 17424 587256 187343 366977 735740
>>>>>>> 41700 41548
>>>>>>> 512 128 836636 907717 69359 94921 42443
>>>>>>> <tel:94921%20%C2%A0%2042443> 761031 36828 964378
>>>>>>> 123165 651383 695697 58368 44459
>>>>>>> 512 256 520879 860437 145534 135523 40267
>>>>>>> 847532 31585 663252 69696 1270846 1492545
>>>>>>> 48822 48092
>>>>>>> 512 512 782951 973118 3099691 2942541
>>>>>>> 42328 871966 46218 911184 49791 953248 1036527
>>>>>>> 52723 48347
>>>>>>> 1024 4 76218 69362 36431 28711 1137
>>>>>>> 66171 1174 68938 1125 70566 70845 34942
>>>>>>> 28914
>>>>>>> 1024 8 126045 140524 37836
>>>>>>> <tel:140524%20%C2%A0%20%C2%A037836> 15664 2698
>>>>>>> 126000 2557 125566 2567 110858 127255
>>>>>>> 26764 27945
>>>>>>> 1024 16 243398 261429 40238 23263 3987
>>>>>>> 246400 3882 260746 4093 236652 236874
>>>>>>> 31429 25076
>>>>>>> 1024 32 383109 422076 41731 41605 8277
>>>>>>> 473441 7775 415261 8588 394765 407306
>>>>>>> 40089 28537
>>>>>>> 1024 64 590145 619156 39623 53267 15051
>>>>>>> 722717 14624 753000 257294 597784 620946
>>>>>>> 38619 44073
>>>>>>> 1024 128 1077836 1124099 56192
>>>>>>> <tel:1124099%20%C2%A0%20%C2%A056192> 64916 36851
>>>>>>> 1102176 37198 1082454 281548 829175 792604
>>>>>>> 47975 51913
>>>>>>> 1024 256 941918 1074331 72783 81450 26778
>>>>>>> <tel:81450%20%C2%A0%2026778> 1099636 32395 1060013
>>>>>>> 183218 1024121 995171 44371 45448
>>>>>>> 1024 512 697483 1130312 100324 114682 48215
>>>>>>> 1041758 41480 1058967 90156 994020 1563622
>>>>>>> 56328 46370
>>>>>>> 1024 1024 931702 1087111 4609294 4199201
>>>>>>> 44191 949834 45594 970656 56674 933525 1075676
>>>>>>> 44876 46115
>>>>>>> 2048 4 71438 67066 58319 38913 1147
>>>>>>> 44147 1043 42916 967 66416 67205 45953
>>>>>>> 96750
>>>>>>> 2048 8 141926 134567 61101 55445 2596
>>>>>>> 77528 2564 80402 4258 124211 120747
>>>>>>> 53888 100337
>>>>>>> 2048 16 254344 255585 71550 74500 5410
>>>>>>> 139365 5201 141484 5171 205521 213113
>>>>>>> 67048 57304
>>>>>>> 2048 32 397833 411261 56676 80027 10440
>>>>>>> <tel:80027%20%C2%A0%2010440> 260034 10126 230238
>>>>>>> 10814 391665 383379 79333 60877
>>>>>>> 2048 64 595167 687205 64262 87327 20772
>>>>>>> 456430 19960 477064 23190 540220 563096
>>>>>>> 86812 92565
>>>>>>> 2048 128 833585 933403 121926 118621 37700
>>>>>>> 690020 37575 733254 567449 712337 734006
>>>>>>> 92011 104934
>>>>>>> 2048 256 799003 949499 143688 125659 40871
>>>>>>> 892757 37977 880494 458281 836263 901375
>>>>>>> 131332 110237
>>>>>>> 2048 512 979936 1040724 120896 138013 54381
>>>>>>> 859783 48721 780491 279203 1068824 1087085
>>>>>>> 97886 98078
>>>>>>> 2048 1024 901754 987938 53352 53043 72727
>>>>>>> 1054522 68269 992275 181253 1309480 1524983
>>>>>>> 121600 95585
>>>>>>> 2048 2048 831890 1021540 4257067 3302797
>>>>>>> 75672 984203 80181 826209 94278 966920 1027159
>>>>>>> 111832 105921
>>>>>>> 4096 4 66195 67316 62171 74785 1328
>>>>>>> 28963 1329 26397 1223 71470 69317 55903
>>>>>>> 84915
>>>>>>> 4096 8 122221 120057 90537 60958 2598
>>>>>>> 47312 2468 59783 2640 128674 127872
>>>>>>> 41285 40422
>>>>>>> 4096 16 238321 239251 29336 32121 4153
>>>>>>> 89262 3986 96930 4608 229970 237108
>>>>>>> 55039 56983
>>>>>>> 4096 32 417110 421356 30974 50000 8382
>>>>>>> 156676 7886 153841 7900 359585 367288
>>>>>>> 26611 25952
>>>>>>> 4096 64 648008 668066 32193 29389 14830
>>>>>>> 273265 14822 282211 19653 581898 620798
>>>>>>> 51281 50218
>>>>>>> 4096 128 779422 848564 55594 60253 37108
>>>>>>> 451296 35908 491361 37567 738163 728059
>>>>>>> 67681 66440
>>>>>>> 4096 256 865623 886986 71368 63947 44255
>>>>>>> 645961 42689 719491 736707 819696 837641
>>>>>>> 57059 60347
>>>>>>> 4096 512 852099 889650 68870 73891 31185
>>>>>>> 845224 30259 830153 392334 910442 961983
>>>>>>> 60083 55558
>>>>>>> 4096 1024 710357 867810 29377 29522 49954
>>>>>>> 846640 43665 926298 213677 986226 1115445
>>>>>>> 55130 59205
>>>>>>> 4096 2048 826479 908420 43191 42075 59684
>>>>>>> 904022 58601 855664 115105 1418322 1524415
>>>>>>> 60548 66066
>>>>>>> 4096 4096 793351 855111 3232454 3673419
>>>>>>> 66018 861413 48833 847852 45914 852268 842075
>>>>>>> 42980 48374
>>>>>>> 8192 4 67340 69421 42198 31740 994
>>>>>>> 23251 1166 16813 837 73827 73126 25169
>>>>>>> 29610
>>>>>>> 8192 8 137150 125622 29131 36439 2051
>>>>>>> 44342 1988 48930 2315 134183 135367
>>>>>>> 31080 33573
>>>>>>> 8192 16 237366 220826 24810 26584 3576
>>>>>>> 88004 3769 78717 4289 233751 235355
>>>>>>> 23302 28742
>>>>>>> 8192 32 457447 454404 31594 27750 8141
>>>>>>> 142022 7846 143984 9322 353147 396188
>>>>>>> 34203 33265
>>>>>>> 8192 64 670645 655259 28630 23255 16669
>>>>>>> 237476 16965 244968 15607 590365 575320
>>>>>>> 49998 43305
>>>>>>> 8192 128 658676 760982 44197 47802 28693
>>>>>>> 379523 26614 378328 27184 720997 702038
>>>>>>> 51707 49733
>>>>>>> 8192 256 643370 698683 56233 63165 28846
>>>>>>> 543952 27745 576739 44014 701007 725534
>>>>>>> 59611 58985
>>>>>>> 8192 512 696884 776793 67258 52705 18711
>>>>>>> 698854 21004 694124 621695 784812 773331
>>>>>>> 43101 47659
>>>>>>> 8192 1024 729664 810451 15470 15875 31318
>>>>>>> 801490 38123 812944 301222 804323 832765
>>>>>>> 54308 53376
>>>>>>> 8192 2048 749217 68757 21914 22667 48971
>>>>>>> 783309 48132 782738 172848 907408 929324 51156
>>>>>>> 50565
>>>>>>> 8192 4096 707677 763960 32063 31928 47809
>>>>>>> 751692 49560 786339 93445 1046761 1297876
>>>>>>> 48037 51680
>>>>>>> 8192 8192 623817 746288 2815955 3137358
>>>>>>> 48722 741633 35428 753787 49626 803683 823800
>>>>>>> 48977 52895
>>>>>>> 16384 4 72372 73651 34471 30788 960
>>>>>>> 23610 903 22316 891 71445 71138 56451
>>>>>>> 55129
>>>>>>> 16384 8 137920 141704 50830 33857 1935
>>>>>>> 41934 2275 35588 3608 130757 137801
>>>>>>> 51621 48525
>>>>>>> 16384 16 245369 242460 41808 29770 3605
>>>>>>> 75682 4355 75315 4767 241100 239693
>>>>>>> 53263 30785
>>>>>>> 16384 32 448877 433956 31846 35010 7973
>>>>>>> 118181 8819 112703 8177 381734 391651
>>>>>>> 57749 63417
>>>>>>> 16384 64 710831 700712 66792 68864 20176
>>>>>>> 209806 19034 207852 21255 589503 601379
>>>>>>> 104567 105162
>>>>>>> 16384 128 836901 860867 104226 100373 40899
>>>>>>> 358865 40946 360562 39415 675968 691538
>>>>>>> 96086 105695
>>>>>>> 16384 256 798081 828146 107103 120433 39084
>>>>>>> 595325 39050 593110 56925 763466 797859
>>>>>>> 109645 113414
>>>>>>> 16384 512 810851 843931 113564 106202 35111
>>>>>>> 714831 46244 745947 53636 802902 760172
>>>>>>> 110492 100879
>>>>>>> 16384 1024 726399 820219 22106 22987 53087
>>>>>>> 749053 54781 777705 1075341 772686 809723
>>>>>>> 100349 96619
>>>>>>> 16384 2048 807772 856458 23920 23617 66320
>>>>>>> 829576 72105 740848 656379 864539 835446
>>>>>>> 93499 101714
>>>>>>> 16384 4096 797470 840596 27270 28132 88784
>>>>>>> 834938 83428 836809 342898 953274 969699
>>>>>>> 96499 100657
>>>>>>> 16384 8192 760063 812942 41022 40014 102020
>>>>>>> 812135 104063 820346 229870 1252409 1398306
>>>>>>> 100959 103793
>>>>>>> 16384 16384 743107 825054 3074035 3551062
>>>>>>> 97740 826175 103597 803926 94681 820474 829106
>>>>>>> 97168 92018
>>>>>>> 32768 64 713528 714585 71310 74296 21135
>>>>>>> 194177 21551 202998 21110 571030 595232
>>>>>>> 98598 103373
>>>>>>> 32768 128 766698 820615 103028 102269 39013
>>>>>>> 328409 40325 346403 41084 684604 702513
>>>>>>> 103887 100689
>>>>>>> 32768 256 766591 819138 107557 113878 42088
>>>>>>> 574878 41778 557989 55045 749922 754434
>>>>>>> 100964 104866
>>>>>>> 32768 512 774365 846915 104255 106094 35280
>>>>>>> 728957 25829 734316 26990 750614 800955
>>>>>>> 55013 63750
>>>>>>> 32768 1024 759113 806241 22033 22622 37322
>>>>>>> 761870 45003 766950 54519 755666 741339
>>>>>>> 70018 66255
>>>>>>> 32768 2048 797566 860344 22893 23859 49973
>>>>>>> 778872 53509 779539 796674 817078 797585
>>>>>>> 56750 57047
>>>>>>> 32768 4096 796693 798985 24267 25222 54410
>>>>>>> 781810 53053 802845 421421 832858 855811
>>>>>>> 56748 60507
>>>>>>> 32768 8192 741543 795144 29254 29150 58678
>>>>>>> 830011 55545 833914 221323 914182 952916
>>>>>>> 56120 60014
>>>>>>> 32768 16384 754641 819797 44183 45718 67293
>>>>>>> 785047 65078 807273 132136 1240414 1267713
>>>>>>> 56585 56167
>>>>>>> 65536 64 663333 656588 32211 31925 17324
>>>>>>> 202043 15477 215981 15496 592126 597188
>>>>>>> 86431 93969
>>>>>>> 65536 128 716218 791603 92035 95614 40330
>>>>>>> 330127 39295 346542 39469 697385 714453
>>>>>>> 105094 98327
>>>>>>> 65536 256 769283 798701 110285 110085 38404
>>>>>>> 535730 39939 585023 52402 741206 749899
>>>>>>> 98671 100106
>>>>>>> 65536 512 728151 814516 112550 108873 32284
>>>>>>> 690164 38911 708244 50047 778669 765303
>>>>>>> 98333 92728
>>>>>>> 65536 1024 773504 827108 21542 20741 45901
>>>>>>> 775473 57282 807232 69359 770793 766736
>>>>>>> 101465 100905
>>>>>>> 65536 2048 767661 853446 21077 21260 59825
>>>>>>> 762711 71985 802488 87290 772402 775685
>>>>>>> 96832 103189
>>>>>>> 65536 4096 767669 828165 20681 21480 79798
>>>>>>> 829757 91755 838367 1379411 791248 783023
>>>>>>> 106433 112769
>>>>>>> 65536 8192 739291 784946 23100 22454 85945
>>>>>>> 785134 87081 828489 642088 816781 798275
>>>>>>> 93307 95318
>>>>>>> 65536 16384 736401 791669 26345 26384 93082
>>>>>>> 799356 91419 751766 385721 911919 884688
>>>>>>> 109668 96374
>>>>>>> 131072 64 658361 661211 79790 81016 19460
>>>>>>> 182084 19325 195428 19553 551809 554426
>>>>>>> 96581 81979
>>>>>>> 131072 128 759806 838994 51063 56976 33624
>>>>>>> 326699 36329 360593 35679 710602 716538
>>>>>>> 81725 51819
>>>>>>> 131072 256 787375 843763 54664 65031 33847
>>>>>>> 557817 35093 581552 45163 750234 758452
>>>>>>> 82704 83472
>>>>>>> 131072 512 777460 818049 87831 87110 27994
>>>>>>> 705621 31860 723071 38483 779489 793068
>>>>>>> 88281 86068
>>>>>>> 131072 1024 737158 782780 19005 18897 36614
>>>>>>> 735240 38900 812074 52149 746598 762694
>>>>>>> 74376 82534
>>>>>>> 131072 2048 777386 817330 24169 24693 55171
>>>>>>> 769662 56082 788848 55937 757716 763147
>>>>>>> 73508 82351
>>>>>>> 131072 4096 751757 792201 25283 25173 48455
>>>>>>> 813945 56557 837418 59578 749106 757939
>>>>>>> 67846 70964
>>>>>>> 131072 8192 743004 796673 20369 20327 88990
>>>>>>> 780925 95956 777211 951528 762755 739851
>>>>>>> 70850 69943
>>>>>>> 131072 16384 766023 823611 22333 22142 108337
>>>>>>> 796852 110848 777704 718954 809861 802822 115896
>>>>>>> 82903
>>>>>>> 262144 64 655769 695392 45973 45668 19083
>>>>>>> 209417 18768 207272 19133 601329 599267
>>>>>>> 107705 87261
>>>>>>> 262144 128 750052 798999 72711 74713 37329
>>>>>>> 339480 36854 365587 37187 710898 714372
>>>>>>> 108400 78806
>>>>>>> 262144 256 788355 815575 80897 75141 37080
>>>>>>> 549762 37521 574393 51731 780429 751131
>>>>>>> 97395 73842
>>>>>>> 262144 512 714994 736649 80224 80195 32986
>>>>>>> 708196 36048 628508 44043 767699 781863
>>>>>>> 123267 83558
>>>>>>> 262144 1024 793541 800826 20200 20428 45599
>>>>>>> 752027 48232 798229 57011 715643 763691
>>>>>>> 76741 73211
>>>>>>> 262144 2048 699395 782935 20227 20519 65785
>>>>>>> 779219 80486 803403 93381 650054 712171
>>>>>>> 115611 108457
>>>>>>> 262144 4096 629531 766261 20544 21563 83107
>>>>>>> 819917 93008 844103 90625 741879 754931
>>>>>>> 94114 94475
>>>>>>> 262144 8192 731695 804112 21158 21589 82987
>>>>>>> 787869 84858 799483 95127 731822 737397
>>>>>>> 95950 95160
>>>>>>> 262144 16384 703376 802552 21940 22371 87748
>>>>>>> 777024 90349 779626 1018679 765278 619969
>>>>>>> 96051 92734
>>>>>>> 524288 64 649937 710342 73778 70893 19734
>>>>>>> 207179 19367 199709 19493 585910 581340
>>>>>>> 91902 91443
>>>>>>> 524288 128 739270 805153 91507 90395 38547
>>>>>>> 319049 37988 358516 38123 712602 711814
>>>>>>> 92463 90851
>>>>>>> 524288 256 751279 802496 89481 91022 38869
>>>>>>> 544097 38244 569142 56130 756367 752466
>>>>>>> 92677 92875
>>>>>>> 524288 512 758393 819788 58085 73437 29030
>>>>>>> 700120 28767 739236 33925 770177 795879
>>>>>>> 58963 72689
>>>>>>> 524288 1024 778385 818368 18822 18639 38774
>>>>>>> 798827 50898 799492 55679 801849 800917
>>>>>>> 92778 82686
>>>>>>> 524288 2048 780594 834612 19936 19994 63147
>>>>>>> 769555 63007 802512 66322 772900 771314
>>>>>>> 86628 93485
>>>>>>> 524288 4096 769806 812570 20165 20137 79896
>>>>>>> 783615 71217 80835 68550 80166 73733
>>>>>>> 122559 116844
>>>>>>> 524288 8192 797504 887823 123824 124513 94520
>>>>>>> 844880 86441 710319 65077 636713 819868
>>>>>>> 87765 80121
>>>>>>> 524288 16384 788468 858216 92580 117354 109583
>>>>>>> 850179 63966 856965 121151 789252 805040
>>>>>>> 123810 119088
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Feb 27, 2013, at 2:46 PM, Bryan Whitehead
>>>>>>> <driver at megahappy.net <mailto:driver at megahappy.net>>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> How are you doing the read/write tests on the
>>>>>>>> fuse/glusterfs mountpoint? Many small files will be
>>>>>>>> slow because all the time is spent coordinating locks.
>>>>>>>>
>>>>>>>>
>>>>>>>> On Wed, Feb 27, 2013 at 9:31 AM, Thomas Wakefield
>>>>>>>> <twake at cola.iges.org <mailto:twake at cola.iges.org>>
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>> Help please-
>>>>>>>>
>>>>>>>>
>>>>>>>> I am running 3.3.1 on Centos using a 10GB
>>>>>>>> network. I get reasonable write speeds,
>>>>>>>> although I think they could be faster. But my
>>>>>>>> read speeds are REALLY slow.
>>>>>>>>
>>>>>>>> Executive summary:
>>>>>>>>
>>>>>>>> On gluster client-
>>>>>>>> Writes average about 700-800MB/s
>>>>>>>> Reads average about 70-80MB/s
>>>>>>>>
>>>>>>>> On server-
>>>>>>>> Writes average about 1-1.5GB/s
>>>>>>>> Reads average about 2-3GB/s
>>>>>>>>
>>>>>>>> Any thoughts?
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Here are some additional details:
>>>>>>>>
>>>>>>>> Nothing interesting in any of the log files,
>>>>>>>> everything is very quite.
>>>>>>>> All servers had no other load, and all clients
>>>>>>>> are performing the same way.
>>>>>>>>
>>>>>>>>
>>>>>>>> Volume Name: shared
>>>>>>>> Type: Distribute
>>>>>>>> Volume ID: de11cc19-0085-41c3-881e-995cca244620
>>>>>>>> Status: Started
>>>>>>>> Number of Bricks: 26
>>>>>>>> Transport-type: tcp
>>>>>>>> Bricks:
>>>>>>>> Brick1: fs-disk2:/storage/disk2a
>>>>>>>> Brick2: fs-disk2:/storage/disk2b
>>>>>>>> Brick3: fs-disk2:/storage/disk2d
>>>>>>>> Brick4: fs-disk2:/storage/disk2e
>>>>>>>> Brick5: fs-disk2:/storage/disk2f
>>>>>>>> Brick6: fs-disk2:/storage/disk2g
>>>>>>>> Brick7: fs-disk2:/storage/disk2h
>>>>>>>> Brick8: fs-disk2:/storage/disk2i
>>>>>>>> Brick9: fs-disk2:/storage/disk2j
>>>>>>>> Brick10: fs-disk2:/storage/disk2k
>>>>>>>> Brick11: fs-disk2:/storage/disk2l
>>>>>>>> Brick12: fs-disk2:/storage/disk2m
>>>>>>>> Brick13: fs-disk2:/storage/disk2n
>>>>>>>> Brick14: fs-disk2:/storage/disk2o
>>>>>>>> Brick15: fs-disk2:/storage/disk2p
>>>>>>>> Brick16: fs-disk2:/storage/disk2q
>>>>>>>> Brick17: fs-disk2:/storage/disk2r
>>>>>>>> Brick18: fs-disk2:/storage/disk2s
>>>>>>>> Brick19: fs-disk2:/storage/disk2t
>>>>>>>> Brick20: fs-disk2:/storage/disk2u
>>>>>>>> Brick21: fs-disk2:/storage/disk2v
>>>>>>>> Brick22: fs-disk2:/storage/disk2w
>>>>>>>> Brick23: fs-disk2:/storage/disk2x
>>>>>>>> Brick24: fs-disk3:/storage/disk3a
>>>>>>>> Brick25: fs-disk3:/storage/disk3b
>>>>>>>> Brick26: fs-disk3:/storage/disk3c
>>>>>>>> Options Reconfigured:
>>>>>>>> performance.write-behind: on
>>>>>>>> performance.read-ahead: on
>>>>>>>> performance.io-cache: on
>>>>>>>> performance.stat-prefetch: on
>>>>>>>> performance.quick-read: on
>>>>>>>> cluster.min-free-disk: 500GB
>>>>>>>> nfs.disable: off
>>>>>>>>
>>>>>>>>
>>>>>>>> sysctl.conf settings for 10GBe
>>>>>>>> # increase TCP max buffer size settable using
>>>>>>>> setsockopt()
>>>>>>>> net.core.rmem_max = 67108864
>>>>>>>> net.core.wmem_max = 67108864
>>>>>>>> # increase Linux autotuning TCP buffer limit
>>>>>>>> net.ipv4.tcp_rmem = 4096 87380 67108864
>>>>>>>> net.ipv4.tcp_wmem = 4096 65536 67108864
>>>>>>>> # increase the length of the processor input queue
>>>>>>>> net.core.netdev_max_backlog = 250000
>>>>>>>> # recommended default congestion control is htcp
>>>>>>>> net.ipv4.tcp_congestion_control=htcp
>>>>>>>> # recommended for hosts with jumbo frames enabled
>>>>>>>> net.ipv4.tcp_mtu_probing=1
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Thomas W.
>>>>>>>> Sr. Systems Administrator COLA/IGES
>>>>>>>> twake at cola.iges.org <mailto:twake at cola.iges.org>
>>>>>>>> Affiliate Computer Scientist GMU
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Gluster-users mailing list
>>>>>>>> Gluster-users at gluster.org
>>>>>>>> <mailto:Gluster-users at gluster.org>
>>>>>>>> http://supercolony.gluster.org/mailman/listinfo/gluster-users
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>> _______________________________________________
>>> Gluster-users mailing list
>>> Gluster-users at gluster.org <mailto:Gluster-users at gluster.org>
>>> http://supercolony.gluster.org/mailman/listinfo/gluster-users
>>
>>
>> _______________________________________________
>> Gluster-users mailing list
>> Gluster-users at gluster.org <mailto:Gluster-users at gluster.org>
>> http://supercolony.gluster.org/mailman/listinfo/gluster-users
>>
>>
>
>
>
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://supercolony.gluster.org/mailman/listinfo/gluster-users
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://supercolony.gluster.org/pipermail/gluster-users/attachments/20130228/90f53a4e/attachment.html>
More information about the Gluster-users
mailing list