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From Chang Song <tru64...@me.com>
Subject Re: Serious problem processing hearbeat on login stampede
Date Sat, 16 Apr 2011 03:51:10 GMT

I have file a JIRA bug

https://issues.apache.org/jira/browse/ZOOKEEPER-1049


We have measured I/O wait again, but found no IO activity due to ZK.
Just regular page cache sync daemon in the work: 0-3%.

I will have my team to attach ZK stat result.

Thanks a lot.
Let's move this discussion to JIRA


2011. 4. 15., 오전 7:34, Ted Dunning 작성:

> You said that, but there was some skepticism from others about this.
> 
> You need to try the monitoring that was suggested.  5 minute averages are
> not useful.
> 
> What does the stat four letter command return?  (
> http://zookeeper.apache.org/doc/r3.1.2/zookeeperAdmin.html#sc_zkCommands )
> 
> 2011/4/14 Chang Song <tru64ufs@me.com>
> 
>> 2. We have a boot disk and usr disk.
>>   But as I said, disk I/O is not an issue that's causing 8 second delay.
>> 


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