Poly 2.2.7

From: Alex Rousskov (rousskov@ircache.net)
Date: Wed Dec 15 1999 - 16:18:55 MST


Hi All,

    Web Polygraph 2.2.7 is available. The change log is attached.
        http://polygraph.ircache.net/sources/

    This release includes one important bug fix and minor logging
improvements. We were hunting the size distribution bug for quite a
while and finally got it fixed (again). Testers should expect smoother
and more predictable workload behavior. Please see change log for
details.

If you are preparing for the bake-off, you want to upgrade your
Polygraph installation (including content.pg file) and see if the fixed
workload is "easier" on your caches.

Alex.

---------- change log -------------
2.2.6 -> 2.2.7
19991215
    - added "--time_scale" option to lx; positive values make lx to
      print relative [to the run start] time for traces, scaled by the
      specified amount
    - added "Traces" macro to represent most "traceable" objects in lx
    - added rptm_mean:hit and rptm_mean:miss to lx's All micro
    - only redirect standard output when --out option is used (lx); used
      to redirect error streams as well
    - try to skip corrupted entries in [otherwise valid] binary logs
    - implementation of lognormal distribution used incorrect standard
      deviation leading to occasional huge objects and
      smaller-than-configured means; in other words, lognormal
      distribution was "too random" and of different shape
    - changed content sizes for cntOther and cntDownload after fixing
      the lognormal distribution bug (above) to get the right mean
      object size
    - removed percents from Server.direct_access array; those values are
      ignored by Polygraph because servers calculate them from scratch
      to match "global" content distribution
    - the sum of squared values was not computed correctly leading to
      incorrect readings for standard and relative deviations for
      samples with sampled values larger than 46341



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