Defcon Kaklkaklkekl (Wiki)

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<code> En Hitachi-disk på Adaptec-kontroller, satt opp som Volume med Write-cache på kontroller. En partisjon på disk, 16GB.. Filsystemet er EXT3, opprettet med mkfs.ext3 -b 4096 -i 4096 -m 0 /dev/sdb1 Version 1.03d ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP filez 8G 7375 35 7442 24 5718 11 28081 71 63743 45 219.4 1 ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 5968 97 +++++ +++ 7104 99 6789 93 +++++ +++ 8057 99 filez,8G,7375,35,7442,24,5718,11,28081,71,63743,45,219.4,1,16,5968,97,+++++,+++, 7104,99,6789,93,+++++,+++,8057,99 An Hitachi-disk på Asus-onbard AHCIkontroller, samme partisjonsoppsett som over: Version 1.03d ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP filez 8G 21308 81 30172 69 37773 48 39839 94 127851 87 261.0 2 ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 6175 96 +++++ +++ 6875 99 6974 96 +++++ +++ 7023 99 filez,8G,21308,81,30172,69,37773,48,39839,94,127851,87,261.0,2,16,6175,96,+++++,+++,6875,99,6974,96,+++++,+++,7023,99 SÅ, over SATA2 skal hver disk kunne levere 20(29)/40(125) i det minste... mdadm \ --create --verbose /dev/md0 \ --level=raid5 \ --metadata=1 \ --raid-devices=4 \ /dev/sdb \ /dev/sdc \ /dev/sdd \ /dev/sde \ --chunk=256 vgcreate -s 32M raid5v /dev/md0 lvcreate -n test -L 32G raid5v mkfs.ext3 -b 4096 -E stride=64 -i 4096 -m 0 /dev/raid5v/test Version 1.03d ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP filez 8G 9513 49 14860 50 16499 40 22149 74 31935 41 300.6 3 ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 3885 98 +++++ +++ 4938 91 2157 53 +++++ +++ 2358 43 filez,8G,9513,49,14860,50,16499,40,22149,74,31935,41,300.6,3,16,3885,98,+++++,+++,4938,91,2157,53,+++++,+++,2358,43 Samme RAID5-sett rebuild/init var ferdig: Version 1.03d ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP filez 8G 14559 69 20433 60 20453 50 26155 92 50916 87 441.5 5 ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 3880 96 +++++ +++ 5074 91 3918 98 +++++ +++ 5181 94 filez,8G,14559,69,20433,60,20453,50,26155,92,50916,87,441.5,5,16,3880,96,+++++,+++,5074,91,3918,98,+++++,+++,5181,94 Samme RAID5-sett, men mkfs.ext3 uten -E stride=64 opsjonen Version 1.03d ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP filez 8G 13725 67 17437 59 19201 49 26382 92 52236 86 455.7 4 ------Sequential Create------ --------Random Create-------- -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 3916 94 +++++ +++ 4963 91 4877 97 +++++ +++ 5486 92 filez,8G,13725,67,17437,59,19201,49,26382,92,52236,86,455.7,4,16,3916,94,+++++,+++,4963,91,4877,97,+++++,+++,5486,92 </code>