Re: Ceph Read Benchmark

[David Zafman <david.zafman@xxxxxxxxxxx>]

I would either make my own pool and delete it when done:

rados mkpool testpool

RUN BENCHMARKS

rados rmpool testpool testpool --yes-i-really-really-mean-it

or use the cleanup command, but I ended up having to also delete benchmark_last_metadata

RUN BENCHMARKS

rados -p data ls

…

# Note the names of the preceding "_object#"

rados -p data cleanup benchmark_data_ubuntu_#####

rados -p data rm benchmark_last_metadata

David Zafman

Senior Developer

http://www.inktank.com

On Mar 12, 2013, at 2:11 PM, Scott Kinder <skinder@xxxxxxxxxxx> wrote:

A follow-up question. How do I cleanup the written data, after I finish up with my benchmarks? I notice there is a cleanup <prefix> object command, though I'm unclear on how to use it.

On Tue, Mar 12, 2013 at 2:59 PM, Scott Kinder <skinder@xxxxxxxxxxx> wrote:

That did the trick, thanks David.

On Tue, Mar 12, 2013 at 2:48 PM, David Zafman <david.zafman@xxxxxxxxxxx> wrote:

Try first doing something like this first.

rados bench -p data 300 write --no-cleanup

David Zafman

Senior Developer

http://www.inktank.com

On Mar 12, 2013, at 1:46 PM, Scott Kinder <skinder@xxxxxxxxxxx> wrote:

When I try and do a rados bench, I see the following error:

# rados bench -p data 300 seq

Must write data before running a read benchmark!

error during benchmark: -2

error 2: (2) No such file or directory

There's been objects written to the data pool. What's required to get the read bench test to work?

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