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From Flavio Junqueira <...@yahoo-inc.com>
Subject Re: [ANNOUNCE] Apache ZooKeeper 3.1.0
Date Fri, 20 Feb 2009 23:32:56 GMT
Also, you may consider checking a graph that we posted comparing the  
performance of BookKeeper with the one of HDFS using a local file  
system and local+NFS in the jira issue 5189 (https://issues.apache.org/jira/browse/HADOOP-5189

).

-Flavio


On Feb 20, 2009, at 10:05 AM, Flavio Junqueira wrote:

> Hi Bill, I'm sorry, I missed this message initially. I'm sending  
> below a table that gives you throughput figures for BookKeeper. The  
> rows correspond to distinct BookKeeper configuration (ensemble size,  
> quorum size, entry type), and the columns to different values for  
> the length of an entry in bytes. The throughput values correspond to  
> one client writing 400K records (we call them entries)  
> asynchronously to a ledger.  Finally, the table shows write  
> throughput in thousands of operations per second.
>
>
> 	        128	       1024	        8192
> 3-2-V	32.80	26.45	5.89
> 4-2-V	41.72	31.53	6.55
> 5-2-V	46.89	32.45	6.61
>
> 4-3-G	28.02	21.61	4.37
> 5-3-G	34.91	28.22	4.60
> 6-3-G	41.22	31.70	4.55
>
>
> Let me know if you have more questions, I appreciate your interest.
>
> Thanks,
> -Flavio
>
>
>
>
>
> On Feb 14, 2009, at 2:56 PM, Bill de hOra wrote:
>
>> Patrick Hunt wrote:
>>
>>> A bit about BookKeeper: a system to reliably log streams of  
>>> records. In BookKeeper, servers are "bookies", log streams are  
>>> "ledgers", and each unit of a log (aka record) is a "ledger  
>>> entry". BookKeeper is designed to be reliable; bookies, the  
>>> servers that store ledgers can be byzantine, which means that some  
>>> subset of the bookies can fail, corrupt data, discard data, but as  
>>> long as there are enough correctly behaving servers the service as  
>>> a whole behaves correctly; the meta data for BookKeeper is stored  
>>> in ZooKeeper.
>>
>> Hi Patrick,
>>
>> this sounds cool. Are there any figures on throughput, ie how many  
>> records BookKeeper can process per second?
>>
>> Bill
>


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