Date: Mon, 18 Mar 2013 20:13:47 +0100 From: Davide D'Amico <davide.damico@contactlab.com> To: Steven Hartland <killing@multiplay.co.uk> Cc: freebsd-fs@freebsd.org Subject: Re: FreBSD 9.1 and ZFS v28 performances Message-ID: <1bfdea0efb95a7e06554dadf703d58e7@sys.tomatointeractive.it> In-Reply-To: <42B9D942BA134E16AFDDB564858CA007@multiplay.co.uk> References: <514729BD.2000608@contactlab.com> <810E5C08C2D149DBAC94E30678234995@multiplay.co.uk> <51473D1D.3050306@contactlab.com> <1DD6360145924BE0ABF2D0979287F5F4@multiplay.co.uk> <51474F2F.5040003@contactlab.com> <E106A7DB08744581A08C610BD8A86560@multiplay.co.uk> <51475267.1050204@contactlab.com> <514757DD.9030705@contactlab.com> <42B9D942BA134E16AFDDB564858CA007@multiplay.co.uk>
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> How does ZFS compare if you do it on 1 SSD as per your second
> UFS test? As I'm wondering the mfi cache is kicking in?
Well, it was a test :)
The MFI cache is enabled because I am using mfid* as jbod (mfiutil
create jbod mfid3 mfid4 mfid5 mfid6):
>
> While running the tests what sort of thing are you
> seeing from gstat, any disks maxing? If so primarily
> read or write?
Here the r/w pattern using zpool iostat 2:
DATA 52.2G 1.03T 102 0 1.60M 0
DATA 52.2G 1.03T 7 105 128K 674K
DATA 52.2G 1.03T 40 0 655K 0
DATA 52.2G 1.03T 16 0 264K 0
DATA 52.2G 1.03T 7 154 120K 991K
DATA 52.2G 1.03T 125 0 1.95M 0
DATA 52.2G 1.03T 44 117 711K 718K
DATA 52.2G 1.03T 63 0 1015K 0
DATA 52.2G 1.03T 39 0 631K 0
DATA 52.2G 1.03T 1 152 24.0K 1006K
DATA 52.2G 1.03T 9 0 152K 0
DATA 52.2G 1.03T 2 100 40.0K 571K
DATA 52.2G 1.03T 41 0 663K 0
DATA 52.2G 1.03T 41 0 658K 89.9K
DATA 52.2G 1.03T 1 114 24.0K 741K
DATA 52.2G 1.03T 0 0 0 0
DATA 52.2G 1.03T 2 155 40.0K 977K
DATA 52.2G 1.03T 3 0 63.9K 0
DATA 52.2G 1.03T 28 0 456K 0
DATA 52.2G 1.03T 98 125 1.49M 863K
DATA 52.2G 1.03T 122 0 1.89M 0
DATA 52.2G 1.03T 70 123 1.10M 841K
DATA 52.2G 1.03T 21 0 352K 0
DATA 52.2G 1.03T 1 0 24.0K 0
DATA 52.2G 1.03T 10 160 168K 1.06M
DATA 52.2G 1.03T 6 0 112K 0
DATA 52.2G 1.03T 0 126 7.99K 908K
DATA 52.2G 1.03T 50 0 807K 0
DATA 52.2G 1.03T 19 0 320K 97.9K
DATA 52.2G 1.03T 4 122 66.9K 862K
DATA 52.2G 1.03T 6 0 104K 0
DATA 52.2G 1.03T 0 164 0 1.06M
DATA 52.2G 1.03T 128 0 2.01M 0
DATA 52.2G 1.03T 0 0 0 0
DATA 52.2G 1.03T 0 106 0 649K
DATA 52.2G 1.03T 5 0 95.9K 0
DATA 52.2G 1.03T 8 114 144K 711K
DATA 52.2G 1.03T 40 0 655K 0
DATA 52.2G 1.03T 47 0 759K 0
DATA 52.2G 1.03T 13 96 216K 551K
DATA 52.2G 1.03T 2 0 40.0K 0
DATA 52.2G 1.03T 0 97 0 402K
And the result from sysbench:
General statistics:
total time: 82.9567s
total number of events: 1
total time taken by event execution: 82.9545s
Using a SSD:
# iostat mfid2 -x 2
tty mfid2 cpu
tin tout KB/t tps MB/s us ni sy in id
0 32 125.21 31 3.84 0 0 0 0 99
0 170 0.00 0 0.00 1 0 0 0 99
0 22 0.00 0 0.00 3 0 2 0 96
0 22 0.00 0 0.00 3 0 1 0 96
0 22 32.00 2 0.08 3 0 1 0 96
0 22 32.00 0 0.02 3 0 1 0 96
0 22 4.00 0 0.00 3 0 1 0 96
0 22 0.00 0 0.00 3 0 1 0 96
0 22 0.00 0 0.00 3 0 2 0 96
0 22 0.00 0 0.00 3 0 1 0 96
0 22 0.00 0 0.00 3 0 1 0 96
0 22 0.00 0 0.00 3 0 1 0 96
0 22 0.00 0 0.00 3 0 1 0 96
0 22 0.00 0 0.00 3 0 1 0 96
0 22 0.00 0 0.00 3 0 1 0 96
0 22 0.00 0 0.00 3 0 2 0 96
0 22 44.80 67 2.95 3 0 1 0 96
0 22 87.58 9 0.81 3 0 2 0 96
0 22 32.00 3 0.09 2 0 2 0 96
0 585 0.00 0 0.00 3 0 1 0 96
0 22 4.00 0 0.00 0 0 0 0 100
And the result from sysbench:
General statistics:
total time: 36.1146s
total number of events: 1
total time taken by event execution: 36.1123s
That are the same results using SAS disks.
d.
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