Status of new overview code

Russ Allbery rra at
Tue Sep 10 17:45:57 UTC 2002

Russ Allbery <rra at Stanford.EDU> writes:

> I expect it to do fine tonight, but I'm going to keep watching it
> closely for a few more days.  If I don't see any more problems, my
> intention is to declare it sufficiently tested and to switch over to the
> new overview code.

Expire completed without a hitch last night.  I'm running tdx-util -A on
the new server right now to make sure there are no lurking problems.

In terms of performance, the new overview is slightly slower, but not too

Code region              Time    Pct    Invoked   Min(ms)    Avg(ms)    Max(ms)
overview write   01:46:16.920   7.4%     237849    17.734     26.811     41.979
overview write   01:37:51.460   6.8%     244059    15.044     24.058     55.547

(the first is the new, the second is the old).  That's almost certainly
from the additional msync calls to make sure that we don't lose data in a

Russ Allbery (rra at             <>

    Please send questions to the list rather than mailing me directly.
     <> explains why.

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