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From Jonathan Haddad <...@jonhaddad.com>
Subject Re: Cassandra Config as per server hardware for heavy write
Date Wed, 23 Nov 2016 07:02:16 GMT
How are you benchmarking that?
On Tue, Nov 22, 2016 at 9:16 PM Abhishek Kumar Maheshwari <
Abhishek.Maheshwari@timesinternet.in> wrote:

> Hi,
>
>
>
> I have 8 servers in my Cassandra Cluster. Each server has 64 GB ram and 40
> Cores and 8 SSD. Currently I have below config in Cassandra.yaml:
>
>
>
> concurrent_reads: 32
>
> concurrent_writes: 64
>
> concurrent_counter_writes: 32
>
> compaction_throughput_mb_per_sec: 32
>
> concurrent_compactors: 8
>
>
>
> With this configuration, I can write 1700 Request/Sec per server.
>
>
>
> But our desired write performance is 3000-4000 Request/Sec per server. As
> per my Understanding Max value for these parameters can be as below:
>
> concurrent_reads: 32
>
> concurrent_writes: 128(8*16 Corew)
>
> concurrent_counter_writes: 32
>
> compaction_throughput_mb_per_sec: 128
>
> concurrent_compactors: 8 or 16 (as I have 8 SSD and 16 core reserve for
> this)
>
>
>
> Please let me know this is fine or I need to tune some other parameters
> for speedup write.
>
>
>
>
>
> *Thanks & Regards,*
> *Abhishek Kumar Maheshwari*
> *+91- 9999805591 (Mobile)*
>
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