Ah, will look at the jmx console. Thought it was under nodetool.

content@cl201 ~/swell/cassandra $ iostat -x
Linux 2.6.30-gentoo-r4pb (cl201)     03/05/10     _x86_64_    (8 CPU)

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           9.66    0.00    2.18    4.98    0.00   83.18

Device:         rrqm/s   wrqm/s     r/s     w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
sda              86.37   315.56   53.65   73.00  7534.09  9905.44   137.70     1.47   11.63   2.18  27.66
sdb              24.35   254.96   29.45   67.79  6842.55  9415.54   167.19     0.73    7.50   1.83  17.83
sdc              24.41   254.17   29.44   67.63  6844.34  9389.56   167.23     0.73    7.50   1.83  17.78
sde              24.73   254.26   29.44   67.87  6844.29  9392.18   166.86     0.63    6.50   1.81  17.63
sdd              24.38   254.82   29.44   69.24  6842.92  9417.35   164.76     0.75    7.58   1.83  18.01
sdf              24.35   254.57   29.36   67.37  6842.16  9397.45   167.88     0.69    7.18   1.83  17.68
md0               0.00     0.00    0.60    1.31    18.62    27.21    24.00     0.00    0.00   0.00   0.00
md2               0.00     0.00  322.69 1932.98 41043.23 56337.83    43.17     0.00    0.00   0.00   0.00

Shiv


From: Jonathan Ellis <jbellis@gmail.com>
To: cassandra-user@incubator.apache.org
Sent: Fri, March 5, 2010 11:52:18 AM
Subject: Re: Anti-compaction Diskspace issue even when latest patch applied

On Fri, Mar 5, 2010 at 1:36 PM, shiv shivaji <shivajisus@yahoo.com> wrote:
> Sorry, how to get compaction progress with 0.6. Is it in nodetool or
> somewhere else? I tried a few options after nodetool and did not get this
> info.

it's under CompactionManager in jmx.  I'm not sure if nodetool exposes
this but it's easy to find in JConsole mbeans.

> iostats:

what about iostat -x?

-Jonathan