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No-I/O dirty throttlingNo-I/O dirty throttlingPosted Sep 1, 2011 12:09 UTC (Thu) by akumria (subscriber, #7773)Parent article: No-I/O dirty throttling
Perhaps I'm understanding the problem here; but isn't a process open(2)'ing a file on the BDI a declaration of intent?The problem is that processes do not register with the kernel and declare that they intend to dirty lots of pages on a given BDI
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No-I/O dirty throttling Posted Sep 1, 2011 12:34 UTC (Thu) by mpr22 (subscriber, #60784) [Link] An open(..., O_RDWR, ...) or open(..., O_WRONLY, ...) is a statement of intent to dirty a number of pages greater than zero. It's not necessarily a statement of intent to dirty lots of pages.
No-I/O dirty throttling Posted Sep 1, 2011 12:35 UTC (Thu) by andresfreund (subscriber, #69562) [Link]
That would result in using the worst-case assumption that every process writes as fast as it can to all its writable fds. Not really a useful assumption when you try to distribute a scarce resource.
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