[DRBD-user] drbd resource write performance and sync speeds

Ingard Mevåg ingardm at startsiden.no
Thu Apr 3 17:36:25 CEST 2008

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Hello all.

I've just recently had the time to test DRBD myself. Now I am wondering 
if my initial test result are somewhat normal for professional equipment.

Im running on 2 identical dell PE2850:
controller	LSI Logic 53C1030 Ultra 320 SCSI
disk		6x hdd in raid10
cpu		2x dualcore 2.8ghz xeon
ram		512mb (which is what is made available to this os through grub 
config - xen servers)

on the initial sync, and on addition resyncs i get the following:

drbd0: Began resync as SyncSource (will sync 1951768 KB [487942 bits set]).
drbd0: Resync done (total 34 sec; paused 0 sec; 57404 K/sec)


-----

with bonnie++ tests i get: (where the drbd resource is mounted on 
/tmp/test/ )

xentest1:/tmp/test# bonnie++ -u 0 -d /tmp/test/
Using uid:0, gid:0.
Writing with putc()...done
Writing intelligently...done
Rewriting...done
Reading with getc()...done
Reading intelligently...done
start 'em...done...done...done...
Create files in sequential order...done.
Stat files in sequential order...done.
Delete files in sequential order...done.
Create files in random order...done.
Stat files in random order...done.
Delete files in random order...done.
Version  1.03       ------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
xentest1         1G 34982  87 53201  22 24991   2 36037  58 58588   1 
889.7   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 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ 
+++++ +++
xentest1,1G,34982,87,53201,22,24991,2,36037,58,58588,1,889.7,0,16,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++



xentest1:/tmp# bonnie++ -u 0 -d /tmp/
Using uid:0, gid:0.
Writing with putc()...done
Writing intelligently...done
Rewriting...done
Reading with getc()...done
Reading intelligently...done
start 'em...done...done...done...
Create files in sequential order...done.
Stat files in sequential order...done.
Delete files in sequential order...done.
Create files in random order...done.
Stat files in random order...done.
Delete files in random order...done.
Version  1.03       ------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
xentest1         1G 41593  95 75087  30 31368   3 42218  75 102404   1 
978.6   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 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ 
+++++ +++
xentest1,1G,41593,95,75087,30,31368,3,42218,75,102404,1,978.6,0,16,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++


Are these normal results for equipment equal to this?

regards
ingard



More information about the drbd-user mailing list