tree 869e308418e08a2ba2407128ec773eec10a0ea0c
parent fb630488ed0f6889eb0c6d38bbf7f08a6ea13ca4
author Yuta HIGUCHI <y-higuchi@ak.jp.nec.com> 1469473808 -0700
committer Gerrit Code Review <gerrit@onlab.us> 1470778316 +0000

Let backend choose number of IO threads by default.

e.g., Netty NIO uses # cores * 2 threads.

Change-Id: I59b125aaae50fb067214d067a06a98d258726a26