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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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.
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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=
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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=
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