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From Denis Magda <dma...@gridgain.com>
Subject Re: Ignite Write Behind performance
Date Fri, 03 Jun 2016 04:43:23 GMT

Most likely your write-behind Threads can’t keep up with volume of data that is aggregated
in the write-behind buffer and you get with the situation when from time to time writing to
the DB is performed in the sync mode from system Thread(s).
I would suggest you playing with the following write-behind configuration to avoid the situation
- CacheConfiguration.setWriteBehindFlushSize - increase size of the write-behind buffer;
- CacheConfiguration.setWriteBehindFlushThreadCount;
- CacheConfiguration.setWriteBehindFlushFrequence - decrease this value triggering the flushing
more frequently. Default value is 5 seconds.


> On Jun 2, 2016, at 7:23 PM, amitpa <amitpa@nrifintech.com> wrote:
> Hello,
> I am struggling with improving ignite transaction performance. However this
> is another problem
> However if I am doing write behind and the writes are slow, I am seeing that
> the over all performance of teh grid drops.
> Is there any configuration that I can do to make ignite performance stable
> even when the writes are being slow in write behind (due to slow DB)
> Currently I have 10 threads in write behind mode.
> What should be my system threadpool size assuming I have two caches which
> participate in transactions and 2 nodes in 10G network.
> --
> View this message in context: http://apache-ignite-users.70518.x6.nabble.com/Ignite-Write-Behind-performance-tp5385.html
> Sent from the Apache Ignite Users mailing list archive at Nabble.com.

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