[Gluster-users] Stopped dd write test, but gluster still busy
Gerald Brandt
gbr at majentis.com
Tue Feb 25 00:29:18 UTC 2014
Hi,
I decided I would hammer my GlusterFS NFS mounts with:
# watch -n 0 dd if=/dev/zero of=ddfile bs=8k count=2000000
I stopped the writes long ago, yet my gluster server is still going along.
MDD | md0 | | busy 0% | | read 259
| | write 315 | | KiB/r 438 |
| | KiB/w 507 | | MBr/s 22.20
| | MBw/s 31.20 | | avq 0.00
| | avio 0.00 ms |
MDD | md2 | | busy 0% | |
read 405 | | write 214 | | KiB/r
409 | | | KiB/w 497 | | MBr/s 32.40 | |
MBw/s 20.80 | | avq 0.00 | | avio 0.00 ms |
DSK | sdk | | busy 18% | |
read 132 | | write 110 | | KiB/r
415 | | | KiB/w 485 | | MBr/s 10.72 | |
MBw/s 10.43 | | avq 22.13 | | avio 3.54 ms |
DSK | sdl | | busy 16% | |
read 135 | | write 107 | | KiB/r
414 | | | KiB/w 496 | | MBr/s 10.92 | |
MBw/s 10.38 | | avq 20.79 | | avio 3.16 ms |
DSK | sde | | busy 15% | |
read 135 | | write 110 | | KiB/r
409 | | | KiB/w 488 | | MBr/s 10.80 | |
MBw/s 10.50 | | avq 25.55 | | avio 2.96 ms |
DSK | sdd | | busy 15% | |
read 53 | | write 111 | | KiB/r
434 | | | KiB/w 479 | | MBr/s 4.50 | |
MBw/s 10.40 | | avq 15.65 | | avio 4.27 ms |
DSK | sdf | | busy 14% | |
read 52 | | write 109 | | KiB/r
437 | | | KiB/w 489 | | MBr/s 4.44 | |
MBw/s 10.41 | | avq 25.47 | | avio 4.12 ms |
DSK | sdj | | busy 13% | |
read 54 | | write 108 | | KiB/r
424 | | | KiB/w 493 | | MBr/s 4.47 | |
MBw/s 10.40 | | avq 25.53 | | avio 3.85 ms |
DSK | sdg | | busy 12% | |
read 51 | | write 109 | | KiB/r
441 | | | KiB/w 489 | | MBr/s 4.40 | |
MBw/s 10.41 | | avq 24.37 | | avio 3.67 ms |
DSK | sdh | | busy 12% | |
read 51 | | write 110 | | KiB/r
441 | | | KiB/w 484 | | MBr/s 4.40 | |
MBw/s 10.40 | | avq 22.06 | | avio 3.48 ms |
NET | transport | | tcpi 217035 | tcpo 469958
| | udpi 2 | | udpo 2
| | tcpao 0 | tcppo 6 | | tcprs
84 | | tcpie 0 | | tcpor 2 |
udpnp 0 | | udpip 0 |
NET | network | | ipi 217128 | |
ipo 191986 | | ipfrw 0 | | deliv
217039 | | | | | |
| | | icmpi 2 | | icmpo 0 |
NET | eth4 24% | | pcki 53820 | |
pcko 100866 | | si 6391 Kbps | | so 244
Mbps | | coll 0 | mlti 0 | |
erri 0 | | erro 0 | | drpi 0 | |
drpo 0 |
NET | eth2 24% | | pcki 122557 | |
pcko 123208 | | si 243 Mbps | | so 241
Mbps | | coll 0 | mlti 5 | |
erri 0 | | erro 0 | | drpi 0 | |
drpo 0 |
NET | eth3 24% | | pcki 53846 | |
pcko 100256 | | si 6380 Kbps | | so 242
Mbps | | coll 0 | mlti 0 | |
erri 0 | | erro 0 | | drpi 0 | |
drpo 0 |
NET | eth1 24% | | pcki 121621 | |
pcko 123520 | | si 241 Mbps | | so 242
Mbps | | coll 0 | mlti 6 | |
erri 0 | | erro 0 | | drpi 0 | |
drpo 0 |
What's happening? Why are there big reads when I was only doing a write
test? Why is the ethernet still busy?
Looks like I'm back to trying DRBD.
Gerald
--
Gerald Brandt
Majentis Technologies
gbr at majentis.com
204-229-6595
www.majentis.com
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