lkml.org 
[lkml]   [2003]   [Jan]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH] improved boot time TSC synchronization
    Jim Houston wrote:
    > + * t0 ---\
    > + * ---\
    > + * --->
    > + * tm
    > + * /---
    > + * /---
    > + * t1 <---
    > + *
    > + *
    > + * The goal is to adjust the slave's TSC such that tm falls exactly half-way
    > + * between t0 and t1.

    It looks like not only can you synchronise with a certain accuracy,
    you can determine an upper bound on that accuracy (assuming the
    underlying CPU clocks are locked).

    Maybe that figure could be put into /proc/cpuinfo?

    As well as being an interesting value, it may be useful for programs
    to know the effective accuracy of `rdtsc'.

    -- Jamie
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:32    [W:0.043 / U:31.076 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site