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Posted to user@cassandra.apache.org by Rajath Subramanyam <ra...@gmail.com> on 2016/03/14 19:38:38 UTC
Regarding cassandra-stress results
Hello Cassandra Community,
When cassandra-stress tool dumps the output at the end of the benchmarking
run, what is the unit of latency statistics ?
latency mean : 0.7 [READ:0.7, WRITE:0.7]
latency median : 0.6 [READ:0.6, WRITE:0.6]
latency 95th percentile : 0.8 [READ:0.8, WRITE:0.8]
latency 99th percentile : 1.2 [READ:1.2, WRITE:1.2]
latency 99.9th percentile : 8.8 [READ:8.9, WRITE:9.0]
latency max : 448.7 [READ:162.3, WRITE:448.7]
Thanks in advance.
- Rajath
------------------------
Rajath Subramanyam
Re: Regarding cassandra-stress results
Posted by Jaydeep Chovatia <ch...@gmail.com>.
ms
On Mon, Mar 14, 2016 at 11:38 AM, Rajath Subramanyam <ra...@gmail.com>
wrote:
> Hello Cassandra Community,
>
> When cassandra-stress tool dumps the output at the end of the benchmarking
> run, what is the unit of latency statistics ?
>
> latency mean : 0.7 [READ:0.7, WRITE:0.7]
> latency median : 0.6 [READ:0.6, WRITE:0.6]
> latency 95th percentile : 0.8 [READ:0.8, WRITE:0.8]
> latency 99th percentile : 1.2 [READ:1.2, WRITE:1.2]
> latency 99.9th percentile : 8.8 [READ:8.9, WRITE:9.0]
> latency max : 448.7 [READ:162.3, WRITE:448.7]
>
> Thanks in advance.
>
> - Rajath
> ------------------------
> Rajath Subramanyam
>
>
Re: Regarding cassandra-stress results
Posted by Rajath Subramanyam <ra...@gmail.com>.
I opened CASSANDRA-11352
<https://issues.apache.org/jira/browse/CASSANDRA-11352> to add this minor
improvement to the cassandra-stress tool where the units are part of the
output.
- Rajath
------------------------
Rajath Subramanyam
On Mon, Mar 14, 2016 at 3:43 PM, John Wong <go...@gmail.com> wrote:
> On Mon, Mar 14, 2016 at 6:13 PM, Robert Coli <rc...@eventbrite.com> wrote:
>
>> On Mon, Mar 14, 2016 at 11:38 AM, Rajath Subramanyam <ra...@gmail.com>
>> wrote:
>>
>>> When cassandra-stress tool dumps the output at the end of the
>>> benchmarking run, what is the unit of latency statistics ?
>>>
>>
>> This is becoming a FAQ. Perhaps the docs for the tool (and/or the tool
>> itself) should be modified to specify units.
>>
>> I have bcced docs AT datastax regarding the docs.
>>
>> =Rob
>>
>>
>
> Probably also worth adding to the actual output. I am not sure if there's
> a good reason to not include in the output.
>
> John
>
>
Re: Regarding cassandra-stress results
Posted by John Wong <go...@gmail.com>.
On Mon, Mar 14, 2016 at 6:13 PM, Robert Coli <rc...@eventbrite.com> wrote:
> On Mon, Mar 14, 2016 at 11:38 AM, Rajath Subramanyam <ra...@gmail.com>
> wrote:
>
>> When cassandra-stress tool dumps the output at the end of the
>> benchmarking run, what is the unit of latency statistics ?
>>
>
> This is becoming a FAQ. Perhaps the docs for the tool (and/or the tool
> itself) should be modified to specify units.
>
> I have bcced docs AT datastax regarding the docs.
>
> =Rob
>
>
Probably also worth adding to the actual output. I am not sure if there's a
good reason to not include in the output.
John
Re: Regarding cassandra-stress results
Posted by Robert Coli <rc...@eventbrite.com>.
On Mon, Mar 14, 2016 at 11:38 AM, Rajath Subramanyam <ra...@gmail.com>
wrote:
> When cassandra-stress tool dumps the output at the end of the benchmarking
> run, what is the unit of latency statistics ?
>
This is becoming a FAQ. Perhaps the docs for the tool (and/or the tool
itself) should be modified to specify units.
I have bcced docs AT datastax regarding the docs.
=Rob