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From John Wilson <sami.hailu...@gmail.com>
Subject Re: Is WAL a memory-mapped file?
Date Wed, 01 Nov 2017 19:29:35 GMT
Excellent! Thanks!

On Wed, Nov 1, 2017 at 12:19 PM, Alexey Kukushkin <kukushkinalexey@gmail.com
> wrote:

> John,
>
> The default mode is the slowest of the 3 WAL write modes available. The
> other two are OS buffered write "LOG_ONLY" and Ignite buffered write
> "BACKGROUND".
>
> You might need some benchmarking in your real environment (hardware and
> software) with your specific task to understand if it is "slow". Often you
> can significantly speed the things up with native persistence performance
> tuning like adjusting page size, using separate disk for WAL, SSD
> over-provisioning, etc. Please read about some tricks here
> <https://apacheignite.readme.io/docs/durable-memory-tuning#section-native-persistence-related-tuning>
> .
>
>

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