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author	Sage Weil <sage@redhat.com>
	Wed, 29 Apr 2015 18:52:55 +0000 (11:52 -0700)
committer	Sage Weil <sage@redhat.com>
	Tue, 1 Sep 2015 17:39:42 +0000 (13:39 -0400)
commit	e89b2474b7cda97ee83819f9ed834215ba3ca7b0
tree	36254a0180cec5e647aabc20d341c452ae65d9b3	tree \| snapshot
parent	668c2777158bf08888c67921210a796a80686e56	commit \| diff

os/newstore: avoid sync append for small ios

An append is expensive in terms of latency (write, fdatasync, kv commit),
while a wal write is just the kv commit and the write and fdatasync are
async. For small IOs doing the wal may improve performance.

Signed-off-by: Sage Weil <sage@redhat.com>

src/common/config_opts.h		diff \| blob \| history
src/os/newstore/NewStore.cc		diff \| blob \| history

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