Re: [Xen-users] (xen) Possible bug: Memory squeeze in netback driver.

[Anthony Liguori <aliguori@us.ibm.com>]

Erik Hensema wrote:
> On Tuesday 06 June 2006 23:43, Anthony Liguori wrote:
>   
>> This is a rather curious path in the code involving rate limiting
>> that I'm not all that familiar with.  Does it help is you create
>> the domains with a large maxmem than memory?  For instance:
>>
>> maxmem = 512
>> memory = 256
>>     
>
> Yes, it does seem to help. I've recreated almost all domains with 16 
> MB 'headroom', now I can create domains up until the point I run out 
> of loop devices ;-) (6 domU's running ATM)
> I'll reboot tonight (or shutdown all domains and reload the loop 
> module) and try to start more domains.
>   

I suspected it would but I was hoping it wouldn't.  Do this mean that 
the netback driver needs to be able to increase it's reservation?  If 
so, should we be enforcing (in the tools) that memory < maxmem?  Any 
thoughts Keir?

Regards,

Anthony Liguori