lkml.org 
[lkml]   [2010]   [May]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    SubjectRe: RFC: dirty_ratio back to 40%
    Date
    > > So, I'd prefer to restore the default rather than both Redhat and SUSE apply exactly
    > > same distro specific patch. because we can easily imazine other users will face the same
    > > issue in the future.
    >
    > On desktop systems the low dirty limits help maintain interactive feel.
    > Users expect applications that are saving data to be slow. They do not
    > like it when every application in the system randomly comes to a halt
    > because of one program stuffing data up to the dirty limit.

    really?
    Do you mean our per-task dirty limit wouldn't works?

    If so, I think we need fix it. IOW sane per-task dirty limitation seems independent issue
    from per-system dirty limit.


    > The cause and effect for the system slowdown is clear when the dirty
    > limit is low. "I saved data and now the system is slow until it is
    > done." When the dirty page ratio is very high, the cause and effect is
    > disconnected. "I was just web surfing and the system came to a halt."
    >
    > I think we should expect server admins to do more tuning than desktop
    > users, so the default limits should stay low in my opinion.




    \
     
     \ /
      Last update: 2010-05-21 03:15    [W:0.024 / U:34.292 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site