Norman Maurer 65e3a26dbb Only call System.nanoTime() if no read batch is ongoing. Related to [#3808]
Motivation:

[#3808] introduced some improvements to reduce the calls to System.nanoTime() but missed one possible optimization.

Modifications:

Only call System.nanoTime() if no reading patch is in process.

Result:

Less System.nanoTime() calls.
2015-05-25 18:21:13 +02:00
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