NFS/RAID tests

testing the /wspace RAID 5 volume

[john@bender ~]$ dd if=/dev/zero of=/wspace/wdrop/john/testdd bs=8092 count=100000
100000+0 records in
100000+0 records out
809200000 bytes (809 MB) copied, 79.0021 s, 10.2 MB/s

[john@bender ~]$ dd if=/dev/zero of=/wspace/wdrop/john/testdd bs=8092 count=100000
100000+0 records in
100000+0 records out
809200000 bytes (809 MB) copied, 27.1931 s, 29.8 MB/s

enable jumbo frames in linux

jumbo frame compatible hardware

How to achieve Gigabit speeds with Linux

my card only supports an MTU of 7000 on bender

artemis supports full MTU 9000

artemis: MTU 9000
bender: MTU 7000

[john@bender ~]$ dd if=/dev/zero of=/wspace/wdrop/john/testdd bs=8092 count=100000
100000+0 records in
100000+0 records out
809200000 bytes (809 MB) copied, 23.5473 s, 34.4 MB/

artemis: MTU 7000
bender: MTU 7000

[john@bender ~]$ dd if=/dev/zero of=/wspace/wdrop/john/testdd bs=8092 count=100000
100000+0 records in
100000+0 records out
809200000 bytes (809 MB) copied, 22.8067 s, 35.5 MB/s

john@artemis:~$ dd if=/dev/zero of=/wspace/wdrop/john/testdd bs=8092 count=100000
100000+0 records in
100000+0 records out
809200000 bytes (809 MB) copied, 9.86131 s, 82.1 MB/s

testing the /w/wspace RAID 1 volume

[john@bender ~]$ dd if=/dev/zero of=/mnt/wspace/wdrop/john/testdd bs=8092 count=100000
100000+0 records in
100000+0 records out
809200000 bytes (809 MB) copied, 89.5973 s, 9.0 MB/s

[john@bender ~]$ dd if=/dev/zero of=/mnt/wspace/wdrop/john/testdd bs=8092 count=100000
100000+0 records in
100000+0 records out
809200000 bytes (809 MB) copied, 87.2825 s, 9.3 MB/s

john@vpn:~$ dd if=/dev/zero of=/w/wspace/wdrop/john/testdd bs=8092 count=100000
100000+0 records in
100000+0 records out
809200000 bytes (809 MB) copied, 19.813 s, 40.8 MB/s

testing the /mnt/raidvol RAID 5 volume

[root@qubit tmp]# dd if=/dev/zero of=/mnt/raidvol/tmp/testdd bs=8092 count=100000
100000+0 records in
100000+0 records out
809200000 bytes (809 MB) copied, 0.382969 s, 2.1 GB/s
[root@qubit tmp]# dd if=/dev/zero of=/mnt/raidvol/tmp/testdd bs=8092 count=1000000
1000000+0 records in
1000000+0 records out
8092000000 bytes (8.1 GB) copied, 59.1374 s, 137 MB/s