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Posted to user@ignite.apache.org by ashishb888 <as...@gmail.com> on 2020/01/30 07:25:42 UTC
Ignite swap space
I have,
-4 nodes 2 clients & 2 severs. A & B are the clients and X & Y are the
servers.
-32 GB RAM
-2 data regions default & xyz
-A & B takes 2 GB RAM each. X takes 10 GB & Y takes 15 GB but may grow
to 25 GB
-X uses default region and Y uses xyz region
All the above nodes run on the same machine. I wanted to enable swap of node
Y for xyz region.
But at the same time I do not want node Y to eat other nodes' RAM. How to
achieve this?
BR,
Ashish
--
Sent from: http://apache-ignite-users.70518.x6.nabble.com/
Re: Ignite swap space
Posted by Denis Magda <dm...@apache.org>.
Swapping can come handy if a cluster node reaches its maximum memory
capacity and, instead of failing with an out-of-memory exception, you can
keep it alive by swapping out data before the cluster is scaled out. Once
you add a new cluster node, the data will be rebalanced and the first node
will free its memory space up.
More on swapping here: https://apacheignite.readme.io/docs/swap-space
If you need persistence regardless then consider Ignite native persistence
as advised by others.
-
Denis
On Thu, Jan 30, 2020 at 10:07 PM ashishb888 <as...@gmail.com>
wrote:
> Thank you Evgenii!
>
> I can understand that enabling swap may decrease the performance.
> Keeping in that mind I wanted to see what actually happens after enabling
> swap.
> For that I need to know how to enable swap on a specific node without
> affecting other nodes in the cluster.
>
> BR,
> Ashish
>
>
>
> --
> Sent from: http://apache-ignite-users.70518.x6.nabble.com/
>
Re: Ignite swap space
Posted by Ilya Kasnacheev <il...@gmail.com>.
Hello!
I recommend using native persistence in this case.
Regards,
--
Ilya Kasnacheev
пт, 31 янв. 2020 г. в 09:07, ashishb888 <as...@gmail.com>:
> Thank you Evgenii!
>
> I can understand that enabling swap may decrease the performance.
> Keeping in that mind I wanted to see what actually happens after enabling
> swap.
> For that I need to know how to enable swap on a specific node without
> affecting other nodes in the cluster.
>
> BR,
> Ashish
>
>
>
> --
> Sent from: http://apache-ignite-users.70518.x6.nabble.com/
>
Re: Ignite swap space
Posted by ashishb888 <as...@gmail.com>.
Thank you Evgenii!
I can understand that enabling swap may decrease the performance.
Keeping in that mind I wanted to see what actually happens after enabling
swap.
For that I need to know how to enable swap on a specific node without
affecting other nodes in the cluster.
BR,
Ashish
--
Sent from: http://apache-ignite-users.70518.x6.nabble.com/
Re: Ignite swap space
Posted by Evgenii Zhuravlev <e....@gmail.com>.
Hi,
First of all, I don't think running 2 server nodes on the same physical
machine is a good idea. They will compete for resources and they will need
to support 2 internal processes(like discovery and communication), which
will have an overhead. It's better to have only one here, or have 2 smaller
machines.
As per swapping, I wouldn't recommend to use it, since it will show worse
performance than a native persistence, so, I would recommend using
persistence instead.
Evgenii
ср, 29 янв. 2020 г. в 23:25, ashishb888 <as...@gmail.com>:
> I have,
> -4 nodes 2 clients & 2 severs. A & B are the clients and X & Y are the
> servers.
> -32 GB RAM
> -2 data regions default & xyz
> -A & B takes 2 GB RAM each. X takes 10 GB & Y takes 15 GB but may grow
> to 25 GB
> -X uses default region and Y uses xyz region
>
> All the above nodes run on the same machine. I wanted to enable swap of
> node
> Y for xyz region.
> But at the same time I do not want node Y to eat other nodes' RAM. How to
> achieve this?
>
> BR,
> Ashish
>
>
>
> --
> Sent from: http://apache-ignite-users.70518.x6.nabble.com/
>