Date: Tue, 15 May 2007 12:30:57 -0400 From: "Kevin Kobb" <kkobb@skylinecorp.com> To: "'Tom Judge'" <tom@tomjudge.com>, "'Randy Schultz'" <schulra@earlham.edu> Cc: freebsd-performance@freebsd.org Subject: RE: PERC5i throughput [was: possible issues with Dell/Perc5 raid] Message-ID: <000301c7970e$6dbdcc80$9501a8c0@skylinecorp.net> In-Reply-To: <4649CC6B.1050203@tomjudge.com> References: <Pine.BSF.4.64.0705101545340.34925@tdream.lly.earlham.edu> <464474F0.3040306@tomjudge.com> <7579f7fb0705110735h1a65ef7atcab00bdbc25224d6@mail.gmail.com> <4649A71C.4030302@skylinecorp.com> <Pine.BSF.4.64.0705150948390.61298@tdream.lly.earlham.edu> <4649CC6B.1050203@tomjudge.com>
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This is a multi-part message in MIME format. ------=_NextPart_000_0004_01C796EC.E6AE9D80 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Tom Judge wrote: > Randy Schultz wrote: >> On Tue, 15 May 2007, Kevin Kobb spaketh thusly: >> >> -}These reports on poor performance using mpt seem to be on SATA >> -}drives. Has anybody been seeing this using SAS drives? -} >> -}We are testing Dell PE840s with hot swap SAS drives, and seem to >> get >> decent -}performance, though I haven't run any benchmarks yet. Any >> opinions if the -}PERC5i/mfi is a better choice than the SAS5iR/mpt >> combination? >> >> Would it be possible for you to install blogbench and give it a quick >> run while your system is idle? We will be ordering a new box in 1-2 >> months that we need high disk I/O capabilities. We've been looking >> at >> the PERC5i set up RAID 5 with 4-6 SAS drives. I'ld be interested in >> what you're seeing for throughput on the PERC5i. >> > > I have attached some blogbench tests from the following configs: > > Perc5i 4 * SAS 15K RPM 146 Gig disks in raid 5. > > > Perc5e 15 * SATA 7.2K RPM 500 Gig disks in raid 50 (3 raid 5 volumes > 5 disks each) > > > Other configurations that I may be able to test are 2 SATA in raid 1 > and 2 SAS in raid 1 (both on perc5i). Ok, I installed blogbench (which I have not used before) and ran a couple of quick tests. I have a SAS 5iR controller, (not a PERC5 though) on a PE840, with 2 GB RAM, and 2 146 GB 10K RPM hot plug drives in a RAID 1. I ran the test and noticed: "mpt0: QUEUE FULL EVENT: Bus 0x00 Target 0x20 Depth 121" messages in my logs. Then I ran, camcontrol tags 0:0:0 -N 119 -v, and ran it again. I didn't get any messages this time and got the results indicated in test 2. ------=_NextPart_000_0004_01C796EC.E6AE9D80 Content-Type: text/plain; name="test1.txt" Content-Transfer-Encoding: quoted-printable Content-Disposition: attachment; filename="test1.txt" Frequency =3D 10 secs=0A= Scratch dir =3D [/var/blogbench/]=0A= Spawning 3 writers...=0A= Spawning 1 rewriters...=0A= Spawning 5 commenters...=0A= Spawning 100 readers...=0A= Benchmarking for 30 iterations.=0A= The test will run during 5 minutes.=0A= =0A= Nb blogs R articles W articles R pictures W pictures R = comments W comments=0A= 17 55260 973 39370 880 = 32248 3650=0A= 28 134486 532 98010 549 = 86733 3106=0A= 30 134573 257 101060 146 = 107526 4947=0A= 34 98176 280 68817 192 = 76737 2610=0A= 42 146159 569 101205 526 = 108409 4214=0A= 44 113053 103 77234 95 = 80420 4117=0A= 47 123475 58 82482 60 = 101734 4138=0A= 53 116878 333 79349 328 = 100729 4242=0A= 62 129703 491 88760 511 = 102082 2740=0A= 75 56569 1017 39268 646 = 43163 3330=0A= 78 78428 125 53036 107 = 60883 5010=0A= 83 41037 452 28260 301 = 31707 4043=0A= 88 41144 492 28448 407 = 29760 4011=0A= 93 104037 347 71189 473 = 81383 3972=0A= 100 138044 287 95126 316 = 106019 5474=0A= 103 136079 187 94750 203 = 107826 5754=0A= 106 80718 230 55433 146 = 67429 3845=0A= 111 29693 326 21125 284 = 23386 3978=0A= 120 47330 400 31754 381 = 36253 4219=0A= 123 104226 342 70924 341 = 85267 4291=0A= 128 120925 808 87777 533 = 97476 2673=0A= 129 158526 163 114288 116 = 135061 3884=0A= 134 33258 389 23219 328 = 31020 4083=0A= 140 56495 362 39954 323 = 49051 3525=0A= 142 130233 223 93422 220 = 110732 2766=0A= 150 63513 603 46071 326 = 57740 4760=0A= 155 19686 305 13779 288 = 14446 3257=0A= 160 56576 511 40326 390 = 46761 4171=0A= 162 15760 188 11627 193 = 15065 3569=0A= 166 33365 176 23615 251 = 27148 4420=0A= =0A= Final score for writes: 166=0A= Final score for reads : 53465=0A= ------=_NextPart_000_0004_01C796EC.E6AE9D80 Content-Type: text/plain; name="test2.txt" Content-Transfer-Encoding: quoted-printable Content-Disposition: attachment; filename="test2.txt" Frequency =3D 10 secs=0A= Scratch dir =3D [/var/blogbench/]=0A= Spawning 3 writers...=0A= Spawning 1 rewriters...=0A= Spawning 5 commenters...=0A= Spawning 100 readers...=0A= Benchmarking for 30 iterations.=0A= The test will run during 5 minutes.=0A= =0A= Nb blogs R articles W articles R pictures W pictures R = comments W comments=0A= 39 104065 1902 92397 1908 = 81915 1920=0A= 52 89671 812 75477 796 = 64955 2786=0A= 63 40679 526 33195 646 = 31461 2682=0A= 78 51740 1173 42408 778 = 35679 3384=0A= 88 113424 624 91326 546 = 78975 2915=0A= 91 46138 275 37605 254 = 33564 5530=0A= 97 36149 370 28729 231 = 26711 2891=0A= 101 85994 274 68781 101 = 63879 4942=0A= 116 48741 646 39656 758 = 33324 3320=0A= 124 26635 436 20939 492 = 19201 3246=0A= 129 62322 387 50055 356 = 42611 3542=0A= 133 34041 176 27625 103 = 23844 4214=0A= 136 70655 187 57334 92 = 47747 3775=0A= 140 91423 268 73591 322 = 64109 3731=0A= 145 40426 310 32623 369 = 30511 4642=0A= 149 51952 350 43269 207 = 36259 3263=0A= 155 45495 313 37330 294 = 32495 4303=0A= 161 71781 381 59076 337 = 53068 5047=0A= 166 82942 245 67613 221 = 58052 4236=0A= 167 107542 138 87544 114 = 71804 2991=0A= 176 114451 480 93543 204 = 80621 5079=0A= 178 149129 107 122331 141 = 102999 2691=0A= 180 125073 168 102207 106 = 87452 5430=0A= 181 152969 77 123829 74 = 106024 5851=0A= 187 161513 395 130680 131 = 112562 4197=0A= 189 175944 186 138771 32 = 122199 5258=0A= 192 154242 196 121718 214 = 102413 2791=0A= 197 215053 416 168652 274 = 144365 2056=0A= 201 199915 342 155300 317 = 131471 2108=0A= 205 189504 141 146564 64 = 124165 1588=0A= =0A= Final score for writes: 205=0A= Final score for reads : 45783=0A= ------=_NextPart_000_0004_01C796EC.E6AE9D80--
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