Re: New filesystem for Linux

[Eric Dumazet]

Mikulas Patocka a écrit :
> > The problem with a per_cpu biglock is that you may consume a lot of 
> > RAM for big NR_CPUS. Count 32 KB per 'biglock' if NR_CPUS=1024
>
> Does one Linux kernel run on system with 1024 cpus? I guess it must fry 
> spinlocks... (or even lockup due to spinlock livelocks)

Not here in my house, but I was told such beasts exist somewhere on this planet :)

You can have a kernel compiled with NR_CPUS=1024, but still run it on your 
laptop, with a single CPU available...

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