Paul Barker wrote:
... reads are fast with little overhead. ... I'm not worried about the high write times as the volumes I have on the array are mainly read.
I am pretty much only going to use my arrays for reading too. I wonder if it would be advantageous to make them read-only.
Just curious if you got any output in dmesg
I don't know how to tell when the messages are displayed...I do see lots of (250ish) of :
APIC error on CPU0: 40(40)
but I don't know what that means.
or /var/log/messages whilst running.
Nothing at all in /var/log/messages
Did you (dare) try running this on the master and slave arrays at the same time ?
I just did this :
cd /mnt/md1/bonnie++/ ; /usr/sbin/bonnie++ -u mwaterman > & bonnie++-2.txt & ; cd /mnt/md2/bonnie++/ ; /usr/sbin/bonnie++ -u mwaterman > & bonnie++-2.txt &
and these are the results :
/dev/md1 - 4xWD800/8/XFS
------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
3G 21862 39 25205 7 11192 3 24639 42 40046 7 248.7 0
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 729 13 +++++ +++ 834 11 805 15 +++++ +++ 557 8/dev/md2 - 4xWD2000/8/XFS
------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
3G 21610 38 27858 8 11986 3 23943 40 36737 7 234.2 0
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 606 8 +++++ +++ 590 9 610 12 +++++ +++ 503 7I assume 'output' is 'write' and 'input' is 'read'? I'm not sure I really understand the numbers. Strange...
Previous results are below.
Thoughts?
Max.
Max Waterman wrote: > > /dev/md1 is 4xWD800 PATA RAID5 master array > =========================================== > ------Sequential Output------ --Sequential Input- --Random- > -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- > Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP > 3G 31272 59 34758 8 9009 3 16343 28 19788 3 265.3 1 > ------Sequential Create------ --------Random Create-------- > -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- > files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP > 16 506 8 +++++ +++ 574 7 530 10 +++++ +++ 367 5 > > /dev/md2 is 4xWD2000 PATA RAID5 slave array > =========================================== > ------Sequential Output------ --Sequential Input- --Random- > -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- > Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP > 3G 44201 78 43174 11 14761 6 38522 67 66666 14 359.4 0 > ------Sequential Create------ --------Random Create-------- > -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- > files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP > 16 1098 14 +++++ +++ 1131 16 1118 17 +++++ +++ 1006 15 > > _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
