On Sat, Oct 20, 2012 at 9:12 AM, Vishal Gupta <[email protected]>wrote:
> Mark,
>
> I am using following version.
>
> collectl-3.6.3-2
> collectl-utils-3.1.0-1
>
I'm betting that's your problem. From my release notes for colmux 3.2:
"- need to do double-buffering with real-time data since the pointers can
change if a new sample comes in before old sample printed"
> I am using the older version of collectl-utils, as i had problem with the
> newer version. I will install newer collectl-util again to find the exact
> description of the problem and let you know why i had not used the newer
> colmux. If i don't see the problem i faced earlier, i will try newer
> version to see if duplicate server entries are still listed in the output.
> I will also try the --age flag to see if "servers-disappearing-in-output"
> problem goes away with increased value of --age.
>
I'd be very interested in hearing what problems you may have had with 3.2
as I'm just about to release 3.3 and if it's something minor could probably
slip in a fix.
> Thanks for the lovely tool and your prompt support. Not only your tool is
> fantastic, your support is even better.
>
glad you're finding colmux useful. Quite honestly I'm still a little
surprised interest in it hasn't seemed to pick up.
re support: nothing I don't expect (though rarely get) from others. ;)
-mark
> Regards,****
> Vishal Gupta****
> Blog <http://blog.vishalgupta.com/> |
> LinkedIn<http://www.linkedin.com/in/vishalgupta77>
> * | *Twitter <https://twitter.com/vishalgupta77>
>
> -----Original Message-----
>
> *From: *Mark Seger <[email protected]>
>
> *Subject: *Re: [Collectl-interest] colmux duplicating nodes
>
> *Date: *20 October 2012 12:19:08 BST
>
> *To: *Vishal Gupta <[email protected]>
>
> *Cc: *[email protected]
>
>
>
>
>
> On Fri, Oct 19, 2012 at 4:16 PM, Vishal Gupta <[email protected]>wrote:
>
>> I am using colmux on a Oracle Exadata Machine full rack with linux hosts
>> (OEL 5.7), if colmux is left running for few hours it starts showing
>> duplicate lines for server in the output.
>>
>
> are you using the latest version [3.2.0]? I do remember seeing that in an
> earlier version and I thought I fixed it. I'm really hoping it's not still
> there because it can be pretty painful to track down or even reproduce.
> The way colmux works is it asynchronously receives/stores data from each
> remote host and at the same time fires a timer every monitoring interval.
> Colmux then displays the late value it's seen for each entry. Sounds
> simple enough but it turned of the incoming data was occasionally
> overwriting the data from the previous samples. My solution was to
> double-buffer the data, reading from one dataset while writing to a new
> one. I'm just hoping I don't need to dig back into it.
>
>
>> Also i noticed that some of the hosts are automatically completely
>> removed from the output. Is there some kind of timeout configured in colmux
>> or collectl which might remove the server entries from the output over time.
>>
>
> unfortunately the way colmux works is if it doesn't hear from a remote
> server in x-seconds (which you can set via --age) it drops it from the list
> and doesn't try to reconnect. as for the age, you don't want to make it
> too long or else a server could disconnect and you'd never know it and keep
> displaying stale data. I suppose on a glitchy network you could end up
> having to wait a little longer. Maybe you could try upping it to 5 or 10
> and see if that helps OR if the remote machine really did drop the link.
>
> you're not the first to ask about reconnecting when a host drops...
>
> -mark
>
>
>> Regards,****
>> Vishal Gupta****
>> Blog <http://blog.vishalgupta.com/> |
>> LinkedIn<http://www.linkedin.com/in/vishalgupta77>
>> * | *Twitter <https://twitter.com/vishalgupta77>
>>
>>
>
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