Dear Justin, In message <alpine.DEB.2.00.1101241024230.14640@xxxxxxxxxxxxxxxx> you wrote: > > Some info on XFS benchmark with delaylog here: > http://comments.gmane.org/gmane.comp.file-systems.xfs.general/34379 For the record: I tested both the "delaylog" and "logbsize=262144" on two systems running Fedora 14 x86_64 (kernel version 2.6.35.10-74.fc14.x86_64). Test No. Mount options 1 rw,noatime 2 rw,noatime,delaylog 3 rw,noatime,delaylog,logbsize=262144 System A: Gigabyte EP35C-DS3R Mainbord, Core 2 Quad CPU Q9550 @ 2.83GHz, 4 GB RAM --------- software RAID 5 using 4 x old Maxtor 7Y250M0 S-ATA I disks (chunk size 16 kB, using S-ATA ports on main board), XFS Test 1: Version 1.96 ------Sequential Output------ --Sequential Input- --Random- Concurrency 1 -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 A1 8G 844 96 153107 19 56427 11 2006 98 127174 15 369.4 6 Latency 13686us 1480ms 1128ms 14986us 136ms 74911us Version 1.96 ------Sequential Create------ --------Random Create-------- A1 -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 104 0 +++++ +++ 115 0 89 0 +++++ +++ 111 0 Latency 326ms 171us 277ms 343ms 9us 360ms 1.96,1.96,A1,1,1295714835,8G,,844,96,153107,19,56427,11,2006,98,127174,15,369.4,6,16,,,,,104,0,+++++,+++,115,0,89,0,+++++,+++,111,0,13686us,1480ms,1128ms,14986us,136ms,74911us,326ms,171us,277ms,343ms,9us,360ms Test 2: Version 1.96 ------Sequential Output------ --Sequential Input- --Random- Concurrency 1 -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 A2 8G 417 46 67526 8 28251 5 1338 63 53780 5 236.0 4 Latency 38626us 1859ms 508ms 26689us 258ms 188ms Version 1.96 ------Sequential Create------ --------Random Create-------- A2 -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 51 0 +++++ +++ 128 0 102 0 +++++ +++ 125 0 Latency 1526ms 169us 277ms 363ms 8us 324ms 1.96,1.96,A2,1,1295901138,8G,,417,46,67526,8,28251,5,1338,63,53780,5,236.0,4,16,,,,,51,0,+++++,+++,128,0,102,0,+++++,+++,125,0,38626us,1859ms,508ms,26689us,258ms,188ms,1526ms,169us,277ms,363ms,8us,324ms Test 3: Version 1.96 ------Sequential Output------ --Sequential Input- --Random- Concurrency 1 -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 A3 8G 417 46 67526 8 28251 5 1338 63 53780 5 236.0 4 Latency 38626us 1859ms 508ms 26689us 258ms 188ms Version 1.96 ------Sequential Create------ --------Random Create-------- A3 -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 51 0 +++++ +++ 128 0 102 0 +++++ +++ 125 0 Latency 1526ms 169us 277ms 363ms 8us 324ms 1.96,1.96,A3,1,1295901138,8G,,417,46,67526,8,28251,5,1338,63,53780,5,236.0,4,16,,,,,51,0,+++++,+++,128,0,102,0,+++++,+++,125,0,38626us,1859ms,508ms,26689us,258ms,188ms,1526ms,169us,277ms,363ms,8us,324ms System B: Supermicro H8DM8-2 Mainbord, Dual-Core AMD Opteron 2216 @ 2.4 GHz, 8 GB RAM software RAID 6 using 6 x Seagate ST31000524NS S-ATA II disks (chunk size 16 kB, using a Marvell MV88SX6081 8-port SATA II PCI-X Controller) XFS Test 1: Version 1.96 ------Sequential Output------ --Sequential Input- --Random- Concurrency 1 -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 B1 16G 403 98 198720 66 53287 49 1013 99 228076 91 545.0 31 Latency 43022us 127ms 126ms 29328us 105ms 66395us Version 1.96 ------Sequential Create------ --------Random Create-------- B1 -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 97 1 +++++ +++ 96 1 96 1 +++++ +++ 95 1 Latency 326ms 349us 351ms 355ms 49us 363ms 1.96,1.96,B1,1,1295784794,16G,,403,98,198720,66,53287,49,1013,99,228076,91,545.0,31,16,,,,,97,1,+++++,+++,96,1,96,1,+++++,+++,95,1,43022us,127ms,126ms,29328us,105ms,66395us,326ms,349us,351ms,355ms,49us,363ms Test 2: Version 1.96 ------Sequential Output------ --Sequential Input- --Random- Concurrency 1 -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 B2 16G 380 98 197319 68 54835 48 983 99 216812 89 527.8 31 Latency 47456us 227ms 280ms 24696us 38233us 80147us Version 1.96 ------Sequential Create------ --------Random Create-------- B2 -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 91 1 +++++ +++ 115 1 73 1 +++++ +++ 96 1 Latency 355ms 2274us 833ms 750ms 1079us 400ms 1.96,1.96,B2,1,1295884032,16G,,380,98,197319,68,54835,48,983,99,216812,89,527.8,31,16,,,,,91,1,+++++,+++,115,1,73,1,+++++,+++,96,1,47456us,227ms,280ms,24696us,38233us,80147us,355ms,2274us,833ms,750ms,1079us,400ms Test 3: Version 1.96 ------Sequential Output------ --Sequential Input- --Random- Concurrency 1 -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 B3 16G 402 99 175802 64 55639 48 1006 99 232748 87 543.7 32 Latency 43160us 426ms 164ms 13306us 40857us 65114us Version 1.96 ------Sequential Create------ --------Random Create-------- B3 -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 93 1 +++++ +++ 101 1 95 1 +++++ +++ 95 1 Latency 479ms 2281us 383ms 366ms 22us 402ms 1.96,1.96,B3,1,1295880202,16G,,402,99,175802,64,55639,48,1006,99,232748,87,543.7,32,16,,,,,93,1,+++++,+++,101,1,95,1,+++++,+++,95,1,43160us,426ms,164ms,13306us,40857us,65114us,479ms,2281us,383ms,366ms,22us,402ms I do not see any significant improvement in any of the parameters - especially when compared to the serious performance degradation (down to 44% for block write, 42% for block read) on system A. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@xxxxxxx A supercomputer is a machine that runs an endless loop in 2 seconds. _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
