Re: [Moosefs-users] mfs mount generates high trafic from chunks

[Eduard I. <edu...@di...>]

There are 2 chunks, goal 2 on all files, one active mount (the 
webserver): 3 virtual machines, each hosted on separate servers, nothing 
else on those servers. The master, metaloger and mfscgi are 3 virtual 
machines hosted on a 4th server. I attached some screenshots. I noticed 
the getattr chart resembles a lot those from traffic in chunk servers.

--
Eduard

Michał Borychowski wrote:
> Don't you have any additional replications between chunkservers? Does the
> webserver and one of chunkservers use the same machine?
>
>
> Kind regards
> Michał Borychowski 
> MooseFS Support Manager
>
>
>
> -----Original Message-----
> From: Eduard Iacoboaia [mailto:edu...@di...] 
> Sent: Friday, January 22, 2010 12:31 PM
> To: moo...@li...
> Subject: Re: [Moosefs-users] mfs mount generates high trafic from chunks
>
> Hi.
>
> This is the traffic incoming on port 9422 in the mount server:
>  --------------------------------------------------------
>  |  Rate  |              Average for                    |
>  --------------------------------------------------------
>  |########|    3 sec     |    15 sec     |    30 sec    |
>  --------------------------------------------------------
>  |  bits  |    154.2M    |     142.4M    |     145.7M   |
>  |  pkts  |     13.1K    |      12.1K    |      12.3K   |
>  --------------------------------------------------------
>
>
> This is the outgoing port 80 from the same server:
>  --------------------------------------------------------
>  |  Rate  |              Average for                    |
>  --------------------------------------------------------
>  |########|    3 sec     |    15 sec     |    30 sec    |
>  --------------------------------------------------------
>  |  bits  |      1.6M    |       1.2M    |       1.2M   |
>  |  pkts  |      171     |       129     |       127    |
>  --------------------------------------------------------
>
>
> I also attached a screenshot. If it's not what you needed, please let me
> know.
>
> Thanks,
> --
> Eduard
>
> Michał Borychowski wrote:
>   
>> And what do you have on graphs from chunkservers? Could you send us 
>> the screenshots from the cgi monitor?
>>
>> Is there really 35-70Mb transfer between mfsmount and chunkservers?
>>
>>
>> Kind regards
>> Michal
>>
>> -----Original Message-----
>> From: Eduard Iacoboaia [mailto:edu...@di...]
>> Sent: Thursday, January 21, 2010 11:29 AM
>> To: moo...@li...
>> Subject: [Moosefs-users] mfs mount generates high trafic from chunks
>>
>> Hi.
>>
>> I have a webserver that has the files (~1.1mil files and 280gb) 
>> mounted over mfs 1.6.11. Although the server generates about 2-3mbit 
>> of http trafic, it retrieves from chunk servers between 35 and 70mbit 
>> (5sec average). The mount has:
>>
>> mfscachefiles,mfsattrcacheto=10,mfsentrycacheto=10,mfsdirentrycacheto=
>> 20
>>
>> Is there anything I can do to lower the amount of traffic from chunks?
>>
>> Thanks,
>> --
>> Eduard
>>
>>
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>
>