Messages in this thread | | | Date | Thu, 18 Oct 2012 10:26:48 +0800 | Subject | Re: [RFC v3 09/13] vfs: add one wq to update map info periodically | From | Zhi Yong Wu <> |
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On Thu, Oct 18, 2012 at 10:25 AM, Zheng Liu <gnehzuil.liu@gmail.com> wrote: > On Wed, Oct 17, 2012 at 02:34:15PM +0800, Zhi Yong Wu wrote: >> >> diff --git a/fs/hot_tracking.h b/fs/hot_tracking.h >> >> index d19e64a..7a79a6d 100644 >> >> --- a/fs/hot_tracking.h >> >> +++ b/fs/hot_tracking.h >> >> @@ -36,6 +36,9 @@ >> >> */ >> >> #define TIME_TO_KICK 400 >> >> >> >> +/* set how often to update temperatures (seconds) */ >> >> +#define HEAT_UPDATE_DELAY 400 >> > >> > FWIW, 400 seconds is an unusual time period. It's expected that >> > periodic work might take place at intervals of 5 minutes, 10 >> > minutes, etc, not 6m40s. It's much easier to predict and understand >> > behaviour if it's at a interval of whole units like minutes, >> > especially when looking at timestamped event traces. Hence 300s (5 >> > minutes) makes a lot more sense as a period for updates... >> got it. thanks. > > Hi Zhi Yong, > > IMHO we'd better to make this value parameterized, and then the user > can adjust this value dynamically. Yeah, this has been in my TODO list. But i want to make the core function can work at first.
> > Regards, > Zheng
-- Regards,
Zhi Yong Wu
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