cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Kant Kodali <k...@peernova.com>
Subject Re: Attached profiled data but need help understanding it
Date Mon, 27 Feb 2017 11:48:04 GMT
Also Attached is a flamed graph generated from a thread dump.

On Mon, Feb 27, 2017 at 2:32 AM, Kant Kodali <kant@peernova.com> wrote:

> Hi,
>
> Attached are the stats of my Cassandra node running on a 4-core CPU. I am
> using sjk-plus tool for the first time so what are the things I should
> watched out for in my attached screenshot? I can see the CPU is almost
> maxed out but should I say that is because of compaction or
> shared-worker-pool threads (which btw, I dont know what they are doing
> perhaps I need to take threadump)? Also what is alloc for each thread?
>
> I have a insert heavy workload (almost like an ingest running against
> cassandra cluster) and in my case all writes are LWT.
>
> The current throughput is 1500 writes/sec where each write is about 1KB.
> How can I tune something for a higher throughput? Any pointers or
> suggestions would help.
>
> Thanks much,
> kant
>

Mime
View raw message