Re: [vserver] which guest hit the memory limit?

From: Edward Capriolo <>
Date: Thu 06 Aug 2009 - 19:07:17 BST
Message-ID: <>

On Thu, Aug 6, 2009 at 1:20 PM, Daniel Hokka Zakrisson<> wrote:
> Edward Capriolo wrote:
>> On Wed, Aug 5, 2009 at 5:04 AM, Rik Bobbaers<> wrote:
>>>> first, this is no virtual machine. :)
>>>> second, there is no method to reset the hit counter
>>>> but there is one to reset the min/max ... this is
>>>> mainly because there is no real point in resetting
>>>> the counter (at least IMHO :)
>>>> best,
>>>> Herbert
>>>> PS: it would be trivial to add this, if you can
>>>> provide a good argument why that would be useful :)
>>> i can take this one...
>>> if you know for example, that your machine went "over its limits" on an
>>> import of a database, compile of "something", or just a batch task... and
>>> you KNOW it does that once at startup, or each night, but you want to
>>> check if it happens again afterward. it's easier to do your heavy
>>> computations, when it's settled, reset counters and see if in "normal
>>> operation", it happens too.
>>> say i have a webserver running , but each morning i need to load some
>>> shitload of pictures to it which makes it prone to memory problems, but i
>>> know, i don't care... it would be nice to reset to 0, then test/see if it
>>> remains 0 for the rest of the time
>>> good reason or not? i don't know, but a reset button on counters is always
>>> a good idea imho :)
>>> Rik Bobbaers
>>> --
>>> linux/unix/system/network/security/hardware/DR admin
>> I can make a use case for always wanting a reset as a user feature.
>> Enter busy NFS servers. I want to be able to graph clients and servers
>> to see, who is using the most NFS ops. Enter a 32 bit OS level
>> counter, a counter that has been 32 bit for over 6 years of bug
>> reporting.
>> Eventually you hit a wrap around condition (this may not be the case
>> with vserver). The only way to fix it is restart/reboot.
>> That stinks! because you spend half your life bragging about high *nux
>> uptime but then you need to reboot/restart for your counters, and you
>> lose your bragging rights. With a 64 bit counter needed a reset is
>> unlikely, but if they are 32 bit it does come into play. So yes reset
>> is always useful for stat guru's like myself :)
> Why do you need to reset it? Wrap arounds by definition mean it gets
> reset... And every single statistics software I've worked with has had
> data types for values that wrap around.
> --
> Daniel Hokka Zakrisson
Haha. We are getting a little off topic. There is a wraparound and
signed/unsigned issue so it does not wrap around to 0 it wraps around
to negative values.
Received on Thu Aug 6 19:07:36 2009

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