All, With the recent release of 4.11 I thought that I would give it a
Yes, I found the same thing basically. My test box is a P4 3Ghz with 2G of RAM on a 3ware 8605 controller with 4 drives in RAID5. Virtually every test I did with iozone* showed a difference anywhere from 10-40% in favor of RELENG_4.
Note, this is a 2G RAM machine hence the odd result for the 1.5G test
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
4 1500 37673 23.7 37848 6.6 40784 7.7 97064 99.8 1174906 99.4 89867.4 99.6
4 3000 38492 24.6 38753 7.0 18396 4.1 80355 86.0 92051 9.9 605.1 1.0
5 1500 31226 23.0 34529 7.9 36444 8.9 110295 99.8 983156 92.5 27388.8 99.6
5 3000 33820 26.1 34309 8.3 13339 3.7 59807 56.8 68059 9.8 330.8 0.9
And a local postmark test. RELENG_4 and RELENG_5
pm>set size 300 100000
pm>set location /card0-a
pm>set transactions 400000
pm>run
Creating files...Done
Performing transactions..........Done
Deleting files...Done
Time:
1219 seconds total
1219 seconds of transactions (328 per second)Files:
200107 created (164 per second)
Creation alone: 500 files (500 per second)
Mixed with transactions: 199607 files (163 per second)
199905 read (163 per second)
199384 appended (163 per second)
200107 deleted (164 per second)
Deletion alone: 889 files (889 per second)
Mixed with transactions: 199218 files (163 per second)Data:
12715.55 megabytes read (10.43 megabytes per second)
12728.92 megabytes written (10.44 megabytes per second)
pm>
pm>set size 300 100000 pm>set location /card0-a pm>set transactions 400000 pm>run Creating files...Done Performing transactions..........Done Deleting files...Done Time: 2824 seconds total 2822 seconds of transactions (141 per second)
Files:
200107 created (70 per second)
Creation alone: 500 files (500 per second)
Mixed with transactions: 199607 files (70 per second)
199905 read (70 per second)
199384 appended (70 per second)
200107 deleted (70 per second)
Deletion alone: 889 files (889 per second)
Mixed with transactions: 199218 files (70 per second)Data:
12715.55 megabytes read (4.50 megabytes per second)
12728.92 megabytes written (4.51 megabytes per second)
pm>
*I have the iozone results in 2 .xls files if anyone wants to see them at
http://www.tancsa.com/iozone-r5vsr4.zip
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