)
From: Peter Tillotson
To: "user@cassandra.apache.org" ; Kent Tong
Sent: Friday, December 16, 2011 1:45 AM
Subject: Re: performance reaching plateau while the hardware is still idle
May I suggest dstat, does cpu, memory, and io on one console
dstat -vn 3
S
May I suggest dstat, does cpu, memory, and io on one console
dstat -vn 3
So possible causes
* Not sufficient parrallelism in the client
* Server has too few threads
* You are not CPU bound, network or disk may be the bottleneck
p
- Original Message -
From: Kent Tong
To: "user@cassa
Use parallel test:-)))
2011/12/15 Kent Tong
> Hi,
>
> I am running a performance test for Cassandra 1.0.5. It can perform about
> 1500 business operation (one read+one write to the same row) per second.
> However, the CPU is still 85% idle (as shown by vmstat) and the IO
> utilization is less th
