From af8a25cdcaf43eb045243c222cd97c399bc2e1f6 Mon Sep 17 00:00:00 2001 From: tangwenjun Date: Mon, 20 Nov 2017 10:33:07 +0800 Subject: [PATCH] os/bluestore: reduce meaningless flush no need to flush when there is no summitted aio Signed-off-by: tangwenjun --- src/os/bluestore/BlueStore.cc | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc index 3c2c348b1c38e..9401e69c60684 100644 --- a/src/os/bluestore/BlueStore.cc +++ b/src/os/bluestore/BlueStore.cc @@ -8550,8 +8550,13 @@ void BlueStore::_kv_sync_thread() } else if (deferred_aggressive) { force_flush = true; } - } else - force_flush = true; + } else { + if (aios || !deferred_done.empty()) { + force_flush = true; + } else { + dout(20) << __func__ << " skipping flush (no aios, no deferred_done)" << dendl; + } + } if (force_flush) { dout(20) << __func__ << " num_aios=" << aios -- 2.39.5