Hi Matt,
On Fri, Oct 18, 2013 at 07:01:40PM -0700, Matthew Walker wrote:
tldr; Do we have data on the number of compressed vs.
uncompressed requests
we serve?
Hoping that others chime in on this, as I could not find such data.
As you suggested in IRC that you could use the output of
and
compare sizes to determine whether or not the response was
compressed or not, I did some random checks:
* Comparing existing logs with Content-Lengths for Content-Encoding
gzip and unencoded responses, field 7 of [1] indeed typically
matches either of those lengths. So it does not hold the
uncompressed length. I updated [1] accordingly.
* For a few random pages I checked our existing logs, and it seems
that for <5% requests field 7 of [1] matches the uncompressed
length. For >90% it matches the gzipped length. I know it's
completely unrepresentative, but I hope it helps for
feasibility/order of magnitude computations.
Best regards,
Christian
[1]
https://wikitech.wikimedia.org/wiki/Cache_log_format
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