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From N Keywal <nkey...@gmail.com>
Subject Re: How to avoid stop-the-world GC for HBase Region Server under big heap size
Date Thu, 23 Aug 2012 07:07:24 GMT
Hi,

For a possible future, there is as well this to monitor:
http://docs.oracle.com/javase/7/docs/technotes/guides/vm/G1.html
More or less requires JDK 1.7
See HBASE-2039

Cheers,

N.

On Thu, Aug 23, 2012 at 8:16 AM, J Mohamed Zahoor <jmozah@gmail.com> wrote:
> Slab cache might help
> http://www.cloudera.com/blog/2012/01/caching-in-hbase-slabcache/
>
> ./zahoor
>
> On Thu, Aug 23, 2012 at 11:36 AM, Gen Liu <geliu@zynga.com> wrote:
>
>> Hi,
>>
>> We are running Region Server on big memory machine (70G) and set Xmx=64G.
>> Most heap is used as block cache for random read.
>> Stop-the-world GC is killing the region server, but using less heap (16G)
>> doesn't utilize our machines well.
>>
>> Is there a concurrent or parallel GC option that won't block all threads?
>>
>> Any thought is appreciated. Thanks.
>>
>> Gen Liu
>>
>>

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