FAQ
Hi all,
Sorry I am new to Hadoop. I have been watching my 10 node cluster and it appears to take around 500 sec to do a run of the javasort portion
of the Gridmix benchmark. That does not worry me but the machines do not appear to be doing much.

iostat -cx
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
sd0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 10 2 0 88
sd1 0.2 0.1 2.4 0.3 0.0 0.0 13.4 0 0
sd2 0.9 30.6 107.6 3756.0 0.0 1.8 56.3 0 6
sd3 1.1 29.2 116.5 3592.4 0.0 1.7 56.9 0 6
sd4 1.1 29.2 117.2 3592.8 0.0 1.7 55.8 0 6


PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP
29978 root 146M 130M sleep 59 0 0:03:14 0.2% java/37
2073 root 99M 75M sleep 59 0 0:00:06 0.1% java/29
2072 root 88M 71M sleep 59 0 0:00:05 0.1% java/29
29934 root 269M 243M sleep 59 0 0:25:22 0.0% java/33
385 root 4236K 3184K cpu3 59 0 0:00:00 0.0% prstat/1
6034 root 1872K 1080K sleep 59 0 0:00:00 0.0% cron/1

Is this normal? What takes the time if it is not doing anything?

Any info greatly appreciated.
Damien

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postedSep 17, '08 at 8:46p
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