On Mon, 10 Nov 2008 21:58:28 +0100 Andrea Righi <[EMAIL PROTECTED]> wrote:
> The current granularity of 5% of dirtyable memory for dirty pages writeback is > too coarse for large memory machines and this will get worse as > memory-size/disk-speed ratio continues to increase. > > These large writebacks can be unpleasant for desktop or latency-sensitive > environments, where the time to complete each writeback can be perceived as a > lack of responsiveness by the whole system. > > Following there's a similar solution as discussed in [1], but a little > bit simplified in order to provide the same functionality (in particular > to avoid backward compatibility problems) and reduce the amount of code > needed to implement an in-kernel parser to handle percentages with > decimals digits. > > The kernel provides the following parameters: > - dirty_ratio, dirty_background_ratio in percentage (1 ... 100) > - dirty_ratio_pcm, dirty_background_ratio_pcm in units of percent mille (1 > ... 100,000) hm, so how long until dirty_ratio_pcm becomes too coarse... What happened to the idea of specifying these in units of kilobytes? _______________________________________________ Containers mailing list [EMAIL PROTECTED] https://lists.linux-foundation.org/mailman/listinfo/containers _______________________________________________ Devel mailing list [email protected] https://openvz.org/mailman/listinfo/devel
