Re: Read/Write NFS I/O performance degraded by FLUSH_STABLE page flushing

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On Fri, 2009-05-29 at 19:02 -0400, Brian R Cowan wrote:
> If you can explain how pulling that ONE change can cause the performance 
> issue to essentially disappear, I'd be more than happy to *try* to get a 
> 2.6.30 test environment configured. Getting ClearCase to *install* on 
> kernel.org kernels is a non-trivial operation, requiring modifications to 
> install scripts, module makefiles, etc. Then there is the issue of 
> verifying that nothing else is impacted, all before I can begin to do this 
> test. We're talking days here. 
> 
> To be blunt, I'd need something I can take to a manager who will ask me 
> why I'm spending so much time on an issue when we "already have the 
> cause."

It's simple: you are the one asking for a change to the established
kernel behaviour, so you get to justify that change. Saying "it breaks
clearcase on RHEL-5" is not a justification, and I won't accept to ack
the change.

Trond

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