Re: page fault scalability patch V11 [0/7]: overview

Nick Piggin
2004-11-20T07:57:38Z

Nick Piggin wrote:
> William Lee Irwin III wrote:

>> No, it's on-topic.
>> (1) The issue is not theoretical. e.g. sysrq t does trigger NMI oopses,
>> merely not every time, and not on every system. It is not
>> associated with hardware failure. It is, however, tolerable
>> because sysrq's require privilege to trigger and are primarly
>> used when the box is dying anyway.
>
>
> OK then put a touch_nmi_watchdog in there if you must.
>

Duh, there is one in there :\

Still, that doesn't really say much about a normal tasklist traversal
because this thing will spend ages writing stuff to serial console.

Now I know going over the whole tasklist is crap. Anything O(n) for
things like this is crap. I happen to just get frustrated to see
concessions being made to support more efficient /proc access. I know
you are one of the ones who has to deal with the practical realities
of that though. Sigh. Well try to bear with me... :|