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xen-users
[Xen-users] Re: Xen, LVM, DRBD, Linux-HA
Nico Kadel-Garcia <nkadel@xxxxxxxxx> writes:
[...]
>> The only issue I worry about right now is a disk performance,
>> i.e. how much do I drop of my current ~100MB/s decent speed
>> (ext3 on LVM2 on S/W Raid10,f2 on 2xSAS SFF 10K)
>> putting somewhere into all that one more layer - DRDB.
>>
> Good question. I've not played with DRBD, and would also welcome
> information on it.
here are some tests i ran when testing my cluster
all 32bit dom0/domU, centos5.1 xen 3.0 drbd 8.0.11
disks are sata
Vendor: ATA Model: Hitachi HUA72105 Rev: GK6O
drbd is synced via gigabit crossover cable on a pair of BCM5721
hopefully this formats well ;)
bonie++ results
name file_size putc putc_cpu put_block put_block_cpu
rewrite rewrite_cpu getc getc_cpu get_block get_block_cpu
seeks
xxx 1G 32835 84 36672 3 15330 0 45565 37
81288 0 214.4
xxx 1G 33447 85 36397 3 17187 0 43458 35
80600 0 226
xxx 1G 32904 84 35061 2 16423 0 44402 34
79767 0 222.4
xxx 1G 35623 55 36679 2 16757 0 43347 31
80110 0 210.3
xxx 1G 36225 57 36461 3 14908 0 39560 54
78780 0 214.9
xxx 1G 33914 53 33150 2 15838 0 43829 34
81146 0 212.4
xxx 1G 34580 73 35840 2 12504 0 32321 67
81201 0 216
xxx 1G 35957 58 35184 2 14923 0 44902 35
81854 0 222.7
xxx 1G 36743 58 36733 3 14998 0 46162 35
80467 0 223.2
xxx 1G 35407 55 33088 2 15780 0 38761 30
81010 0 225.1
avg 34763.5 66.2 35526.5 2.4 15464.8 0 42230.7 39.2
80622.3 0 218.74
noatime,nodiratime,data=writeback
xxx 1G 37214 59 36412 2 22132 0 43897 40
78985 0 250.9
xxx 1G 35971 57 39619 3 21283 0 44129 38
79904 0 254.8
xxx 1G 35299 55 38084 2 21073 0 43567 36
78576 0 250.2
xxx 1G 35728 56 39035 2 23278 0 43812 36
79060 0 252.2
xxx 1G 36807 58 40318 3 21518 0 43926 40
78694 0 251.1
xxx 1G 36934 59 38663 3 23104 0 43691 36
67848 0 235
xxx 1G 34884 55 39836 3 22323 0 42778 34
78294 0 248.8
xxx 1G 36630 58 40599 2 20535 0 43880 34
79439 0 255
xxx 1G 35963 57 40535 3 20716 0 43539 34
78697 0 253.7
xxx 1G 36111 57 36946 2 23118 0 44323 34
79656 0 247.1
avg 36154.1 57.1 39004.7 2.5 21908 0 43754.2 36.2
77915.3 0 249.88
to base 1390.6 -9.1 3478.2 0.1 6443.2 0 1523.5 -3
-2707 0 31.14
3.85% -15.94% 8.92% 4.00% 29.41% 3.48% -8.29%
-3.47% 12.46%
protocol=B,noatime,nodiratime,data=writeback
xxx 1G 35641 56 38721 2 22342 0 43493 39
79768 0 247.6
xxx 1G 35846 56 37661 2 22608 0 43794 38
79423 0 252.4
xxx 1G 36957 59 38804 2 23436 0 44014 37
80370 0 248
xxx 1G 37655 59 36757 2 23312 0 43821 36
79384 0 251.2
xxx 1G 36126 57 37796 2 22240 0 43322 35
79189 0 243.3
xxx 1G 37010 59 37124 3 22273 0 43703 36
78480 0 246.1
xxx 1G 36342 57 37965 2 22615 0 43825 35
80078 0 256.1
xxx 1G 37205 59 38391 2 21258 0 43524 33
80328 0 251.1
xxx 1G 36284 57 37569 2 22638 0 43666 34
80152 0 243.5
xxx 1G 37751 60 37565 3 21748 0 43702 35
78545 0 248.3
avg 36681.7 57.9 37835.3 2.2 22447 0 43686.4 35.8
79571.7 0 248.76
to noatime 527.6 0.8 -1169.4 -0.3 539 0 -67.8
-0.4 1656.4 0 -1.12
1.44% 1.38% -3.09% -13.64% 2.40% -0.16% -1.12%
2.08% -0.45%
to base 1918.2 0.173186453 -0.120081513 -0.176363636
-0.270090493 0 -0.036371485 0.071699744 0.055559301 0
-0.129122149
5.23% 0.30% 0.00% -8.02% 0.00% 0.00% 0.20%
0.00% -0.05%
protocol=A,noatime,nodiratime,data=writeback
xxx 1G 36481 58 39849 3 22559 0 45600 35
78342 0 260.4
xxx 1G 38373 61 41659 3 25262 0 46306 39
79128 0 254.4
xxx 1G 38403 61 40145 3 22839 0 41231 32
78267 0 260.3
xxx 1G 38048 61 41926 3 21506 0 44942 36
79753 0 255
xxx 1G 37734 60 39419 3 22692 0 44637 37
80066 0 261.3
xxx 1G 38553 62 38847 2 24376 0 45162 38
80295 0 257.7
xxx 1G 38605 91 38709 2 23814 0 37731 63
80322 0 256.9
xxx 1G 37455 59 39987 3 21526 0 45214 40
79139 0 251.2
xxx 1G 38451 61 40734 3 24739 0 45160 37
78289 0 250.9
xxx 1G 37001 91 38912 3 22429 0 40696 61
66910 0 257.5
avg 37910.4 66.5 40018.7 2.8 23174.2 0 43667.9 41.8
78051.1 0 256.56
to protocol=b 1228.7 8.6 2183.4 0.6 727.2 0 -18.5
6 -1520.6 0 7.8
3.24% 12.93% 5.46% 21.43% 3.14% #DIV/0! -0.04% 14.35%
-1.95% #DIV/0! 3.04%
to protocol=C, noatime 1756.3 9.4 1014 0.3 1266.2
-86.3 5.6 135.8 6.68
4.63% 14.14% 2.53% 10.71% 5.46% -0.20% 13.40%
0.17% 2.60%
to base 3146.90 0.30 4492.20 0.40 7709.40 1437.20 2.60
-2571.20 37.82
8.30% 0.45% 11.23% 14.29% 33.27% 3.29% 6.22%
-3.29% 14.74%
protocol=A,al_extents=3833
xxx 1G 36926 58 38374 2 25660 0 43575 34
80513 0 245.8
xxx 1G 40684 65 42660 3 27165 0 43255 35
81155 0 247.2
xxx 1G 42181 67 44296 3 27211 0 39922 38
78175 0 245.4
xxx 1G 41712 67 42931 3 26529 0 43312 37
81270 0 246.7
xxx 1G 40893 65 44333 3 26047 0 42691 35
80717 0 240.8
xxx 1G 41157 65 44047 3 28368 0 43275 35
81241 0 244.1
xxx 1G 40660 65 43618 3 24242 0 43647 39
82371 0 222.8
xxx 1G 39230 62 43198 3 25762 0 42809 35
81119 0 209
xxx 1G 39602 63 41687 3 23352 0 43099 37
82070 0 222.3
xxx 1G 39928 63 42956 3 24787 0 42539 35
64510 0 209.6
avg 40297.3 64 42810 2.9 25912.3 0 42812.4 36
79314.1 0 233.37
to extents=287 2386.9 -2.5 2791.3 0.1 2738.1 -855.5
-5.8 1263 0 -23.19
5.92% -3.91% 6.52% 3.45% 10.57% -2.00% -16.11%
1.59% #DIV/0! -9.94%
to base 5533.8 -2.2 7283.5 0.5 10447.5 581.7 -3.2
-1308.2 0 14.63
13.73% -3.44% 17.01% 17.24% 40.32% 1.36% -8.89%
-1.65% #DIV/0! 6.27%
protocol=A,bmbv,extents=3833
xxx 1G 38774 62 41954 3 26871 0 44548 38
80508 0 252.4
xxx 1G 37119 59 41707 3 26761 0 44931 38
78643 0 246.5
xxx 1G 37099 59 41287 3 24634 0 44618 40
79872 0 251.5
xxx 1G 38029 60 41831 3 25955 0 44247 37
80158 0 253.6
xxx 1G 38063 60 41692 3 26362 0 39694 37
77554 0 247.1
xxx 1G 38167 61 41958 3 25310 0 44360 36
80196 0 250.4
xxx 1G 37958 60 42119 3 25936 0 44882 36
80044 0 249.5
xxx 1G 38432 61 41406 3 26224 0 44737 35
80305 0 248.8
xxx 1G 38521 62 40864 3 25105 0 44246 36
81041 0 229
xxx 1G 37439 60 41781 3 24687 0 43397 36
79838 0 230.7
avg 37960.1 60.4 41659.9 3 25784.5 0 43966 36.9
79815.9 0 245.95
to base 3196.6 -5.8 6133.4 0.6 10319.7 1735.3 -2.3
-806.4 0 27.21
8.42% -9.60% 14.72% 20.00% 40.02% 3.95% -6.23%
-1.01% 11.06%
to protocol=A, no bmbv -2337.2 -3.6 -1150.1 0.1 -127.8 0
1153.6 0.9 501.8 0 12.58
-6.16% -5.96% -2.76% 3.33% -0.50% 2.62% 2.44%
0.63% 5.11%
unlimited rate
xxx 1G 38672 61 40177 3 25345 0 44294 38
79754 0 250.5
xxx 1G 39369 63 41914 2 25069 0 43973 38
79088 0 252.2
xxx 1G 40102 64 41508 3 26866 0 40644 35
80110 0 253.3
xxx 1G 39183 62 42734 3 25661 0 44282 36
80201 0 254.7
xxx 1G 38521 61 41672 3 25149 0 44723 36
80452 0 239.2
xxx 1G 37976 60 43040 3 24480 0 44304 37
80280 0 232.8
xxx 1G 39870 63 41722 3 24268 0 44183 38
79207 0 233.5
xxx 1G 38650 61 42041 3 25777 0 44533 36
66930 1 236.3
xxx 1G 39515 63 42254 3 26524 0 44643 37
80044 0 251.9
xxx 1G 40085 64 40896 3 25889 0 45097 36
79824 0 248.8
39194.3 62.2 41795.8 2.9 25502.8 0 44067.6 36.7
78589 0.1 245.32
to base 4430.8 -4 6269.3 0.5 10038 0 1836.9 -2.5
-2033.3 0.1 26.58
11.30% -6.43% 15.00% 17.24% 39.36% 4.17% -6.81%
-2.59% 100.00% 10.83%
to prev 1234.2 1.8 135.9 -0.1 -281.7 0 101.6 -0.2
-1226.9 0.1 -0.63
3.15% 2.89% 0.33% -3.45% -1.10% 0.23% -0.54%
-1.56% 100.00% -0.26%
to protocol=A,al_extents=3832 -1103 -1.8 -1014.2 0 -409.5
0 1255.2 0.7 -725.1 0.1 11.95
-2.81% -2.89% -2.43% 0.00% -1.61% #DIV/0! 2.85% 1.91%
-0.92% 100.00% 4.87%
--
To sto si frustriran, zavidan tko zna na cemu i sto ne vidis dalje od
svoje guzice je tuzno. Da onda barem imas toliko samokontrole da
sutis umjesto da pravis budalu od sebe... izgleda da si prestar da se
promjenis na bolje. - Davor Pasaric, hr.comp.mac
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