We currently read at most 5 packets at a time from the
extractor input. Whether this is inefficient depends on
how efficiently the underlying DataSource handles lots
of small reads. It seems likely, however, that DataSource
implementations will in general more efficiently handle
fewer larger reads, and in the case of this extractor
it's trivial to do this.
Notes:
- The change appears to make little difference in my
testing with DefaultHttpDataSource, although analysis
in #3040 suggests that it does help.
- This change shouldn't have any negative implications
(i.e. at worst it should be neutral wrt performance). In
particular it should not make buffering any more likely,
because the underlying DataSource should return fewer
bytes than are being requested in the case that it
cannot fully satisfy the requested amount.
Issue: #3040
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=162206761
009369bf94