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Re: [dm-devel] [PATCH 0/9] dm-crypt patches



On 04/08/2014 05:44 PM, Mike Snitzer wrote:
How is it that you've extracted these results from the test run?  I'd be
open to rerunning the same on my testbed (1 Intel Xeon E5649 Westmere-EP
with 12 logical cores, AES, and 6 SAS devices for RAID, 1 STEC PCIe SSD)

I could also yield this testbed to you if that'd be easier than you
telling me how to extract the test results.

Thanks Mike!

Pasting new results for loaned machine and things are getting more interesting (with respect to Marian's reply):

single (rotational) device:

TEST NAME                 OPERATION AGGRB_A KB/s AGGRB_B KB/s DIFF A->B
------------------------- --------- ------------ ------------ ---------
disk_nocrypt-read         READ      479129       478528        -0.13 %
disk_nocrypt-write        WRITE     225040       225718         0.30 %
disk_nocrypt-randread     READ       30150        30193         0.14 %
disk_nocrypt-randwrite    WRITE      39059        39546         1.25 %
disk_nocrypt-rw           READ       92477        94021         1.67 %
disk_nocrypt-rw           WRITE      93242        94800         1.67 %
disk_nocrypt-randrw       READ       14426        14902         3.30 %
disk_nocrypt-randrw       WRITE      14388        14862         3.29 %
zero-read                 READ      272889       354069        29.75 %
zero-write                WRITE     145721       306175       110.11 %
zero-randread             READ      482888       599366        24.12 %
zero-randwrite            WRITE     151175       346728       129.36 %
zero-rw                   READ       91280       131950        44.56 %
zero-rw                   WRITE      92036       133042        44.55 %
zero-randrw               READ       72625       142476        96.18 %
zero-randrw               WRITE      72433       142099        96.18 %
disk-read                 READ      193161       210156         8.80 %
disk-write                WRITE      33845       182790       440.08 %
disk-randread             READ       29746        29640        -0.36 %
disk-randwrite            WRITE       7783        31689       307.16 %
disk-rw                   READ       23954        69686       190.92 %
disk-rw                   WRITE      24152        70263       190.92 %
disk-randrw               READ        6770        12523        84.98 %
disk-randrw               WRITE       6753        12490        84.95 %

single PCIe SSD device:

(Staring to immense difference between sequential reads and random reads. Can it be there some sort of raid inside SSD card?)

TEST NAME                 OPERATION AGGRB_A KB/s AGGRB_B KB/s DIFF A->B
------------------------- --------- ------------ ------------ ---------
disk_nocrypt-read         READ      1072537      1145446        6.80 %
disk_nocrypt-write        WRITE      843924       828586       -1.82 %
disk_nocrypt-randread     READ      2091110      2108825        0.85 %
disk_nocrypt-randwrite    WRITE     1149542      1137971       -1.01 %
disk_nocrypt-rw           READ       425704       426661        0.22 %
disk_nocrypt-rw           WRITE      429228       430193        0.22 %
disk_nocrypt-randrw       READ       534206       532311       -0.35 %
disk_nocrypt-randrw       WRITE      532791       530900       -0.35 %
zero-read                 READ       271388       351871       29.66 %
zero-write                WRITE      143748       300000      108.70 %
zero-randread             READ       487264       600310       23.20 %
zero-randwrite            WRITE      148958       344308      131.14 %
zero-rw                   READ        90927       131659       44.80 %
zero-rw                   WRITE       91679       132748       44.80 %
zero-randrw               READ        71325       137468       92.73 %
zero-randrw               WRITE       71136       137104       92.74 %
disk-read                 READ       243854       269678       10.59 %
disk-write                WRITE      179773       300408       67.10 %
disk-randread             READ       518848       647679       24.83 %
disk-randwrite            WRITE      195314       348398       78.38 %
disk-rw                   READ       103381       131270       26.98 %
disk-rw                   WRITE      104237       132356       26.98 %
disk-randrw               READ        93681       145719       55.55 %
disk-randrw               WRITE       93433       145333       55.55 %

4 rotational devices forming md raid5, 64KiB chunk size:

TEST NAME                 OPERATION AGGRB_A KB/s AGGRB_B KB/s DIFF A->B
------------------------- --------- ------------ ------------ ---------
disk_nocrypt-read         READ      560436       547773        -2.26 %
disk_nocrypt-write        WRITE     360552       359039        -0.42 %
disk_nocrypt-randread     READ       62256        62118        -0.22 %
disk_nocrypt-randwrite    WRITE      51591        52289         1.35 %
disk_nocrypt-rw           READ       59680        58955        -1.21 %
disk_nocrypt-rw           WRITE      60174        59443        -1.21 %
disk_nocrypt-randrw       READ       18328        18219        -0.59 %
disk_nocrypt-randrw       WRITE      18280        18171        -0.60 %
zero-read                 READ      274712       353651        28.74 %
zero-write                WRITE     146469       300904       105.44 %
zero-randread             READ      498736       603246        20.95 %
zero-randwrite            WRITE     150131       355003       136.46 %
zero-rw                   READ       92481       132359        43.12 %
zero-rw                   WRITE      93246       133455        43.12 %
zero-randrw               READ       72278       141164        95.31 %
zero-randrw               WRITE      72086       140790        95.31 %
disk-read                 READ      177154       203054        14.62 %
disk-write                WRITE      71057       241913       240.45 %
disk-randread             READ       58757        58988         0.39 %
disk-randwrite            WRITE      14453        28966       100.42 %
disk-rw                   READ       59772        67560        13.03 %
disk-rw                   WRITE      60267        68120        13.03 %
disk-randrw               READ        9634        12815        33.02 %
disk-randrw               WRITE       9608        12781        33.02 %

4 rotational devices forming md raid5, 512KiB chunk size:

(I'll repeat this one since there's strange increase in random read performance on raw raid5 device, see line "disk_nocrypt-randread"):

TEST NAME                 OPERATION AGGRB_A KB/s AGGRB_B KB/s DIFF A->B
------------------------- --------- ------------ ------------ ---------
disk_nocrypt-read         READ      734811       730206        -0.63 %
disk_nocrypt-write        WRITE     264474       259773        -1.78 %
disk_nocrypt-randread     READ       64387        83218        29.25 %
disk_nocrypt-randwrite    WRITE      52671        51898        -1.47 %
disk_nocrypt-rw           READ       75785        73469        -3.06 %
disk_nocrypt-rw           WRITE      76413        74077        -3.06 %
disk_nocrypt-randrw       READ       17664        17690         0.15 %
disk_nocrypt-randrw       WRITE      17617        17643         0.15 %
zero-read                 READ      270967       354099        30.68 %
zero-write                WRITE     145277       307230       111.48 %
zero-randread             READ      478481       585805        22.43 %
zero-randwrite            WRITE     149734       349997       133.75 %
zero-rw                   READ       91742       127760        39.26 %
zero-rw                   WRITE      92501       128818        39.26 %
zero-randrw               READ       78925       145437        84.27 %
zero-randrw               WRITE      78716       145051        84.27 %
disk-read                 READ      203705       237220        16.45 %
disk-write                WRITE      64068       230051       259.07 %
disk-randread             READ       60698        77793        28.16 %
disk-randwrite            WRITE      18535        32227        73.87 %
disk-rw                   READ       49023        65775        34.17 %
disk-rw                   WRITE      49429        66320        34.17 %
disk-randrw               READ       10740        13084        21.82 %
disk-randrw               WRITE      10712        13049        21.82 %

Now I would like to work on simulating different workloads (these tests were simulating 4 jobs in fio on otherwise idling machine)

Ondrej


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