Cache Problems

[Level D <72...@qq.com>]

Hi all,


I have several questions about ignite 1.6.0's cache. 


1. When does ignite free the non-heap memory? I found a system.gc in source code, is it?
2. How can I check the data in non-heap memory with just ignite itself?


3. Are there any bugs about ignite cannot release non-heap memory correctly? 


4. How can I check some data exchanged to hard disk by ignite-visor-console?


5. What does "left right" exactly mean when I exchange some data to hard disk?


Regards,


Zhou.

Re: Cache Problems

[vkulichenko <va...@gmail.com>]

Hi Zhou,

Most likely this ticket is not connected with what you're seeing. Please
show full cache configuration and the code sample that reproduces the
behavior.

-Val



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Re: Cache Problems

[Level D <72...@qq.com>]

Hi Val,


Thanks a lot for your reply.


For the third question, I have a case. 
I buckup a cache in non-heap memory with some updates eveyday. When it's finished, I destory the former cache. But system memory is used more and more. 
Here's a url.
https://issues.apache.org/jira/browse/IGNITE-2833
Is there a kind of bug like that?
 
For the forth question, here's a printscreen. And yes, it's swap.

When I use "cache -a", it shows this.

Entries in hard disk are not counted.


For the fifth question, here's another printscreen.

What do *.left and *.right mean? What are the diffrences between them?


Regards,


Zhou.

Re: Cache Problems

[vkulichenko <va...@gmail.com>]

Hi Zhou,

1. Off-heap memory is managed manually by Ignite and it's released whenever
it's not needed anymore (e.g., you remove entry from cache). System.gc() has
access only to heap memory.

2. I'm not sure I understand this question. Can you clarify?

3. I'm not aware of such bugs. Are you experiencing any unexpected behavior?

4. What do you mean by 'exchanged to hard disk'? Are you using swap?

5. Can you clarify what do you mean by that?

-Val



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Re: Cache Problems

[Semyon Boikov <sb...@apache.org>]

It looks like known issue https://issues.apache.org/jira/browse/IGNITE-2714

On Tue, Sep 13, 2016 at 11:13 AM, kromulan <re...@tetryon.net> wrote:

> I've had same problem in the past but it was a memory leak in indexing
> code.
> Do you use indexing on your entities ?
>
>
>
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> View this message in context: http://apache-ignite-users.
> 70518.x6.nabble.com/Cache-Problems-tp7477p7697.html
> Sent from the Apache Ignite Users mailing list archive at Nabble.com.
>

Re: Cache Problems

[kromulan <re...@tetryon.net>]

I've had same problem in the past but it was a memory leak in indexing code.
Do you use indexing on your entities ?



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