On 03/24/13 06:12, Fredrik Tolf wrote:
While this flush is running, I find that many a process goes into disk sleep waiting for the flush to complete. This includes the process manipulating the mmapped file whenever it tries to redirty a page currently waiting to be flushed, but also, for instance, programs that write() to log files (since, I guess, the buffer page backing the last written portion of the log file is being flushed).
Had you already encountered this article: Jonathan Corbet, The trouble with stable pages, March 13, 2012 (http://lwn.net/Articles/486311/) ?
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