From d1cf3fb80bce50a13da0fd45dba65248cbe38383 Mon Sep 17 00:00:00 2001
From: Jianpeng Ma <jianpeng.ma@intel.com>
Date: Tue, 21 Apr 2020 08:44:53 +0800
Subject: [PATCH] osd/OSD: wakeup all threads of shard.

In our test(4NVME), we found for 4K randread(8/16 mean shard, 2/1 mean
thread_per_shard):
QD	8_2(IOPS(k))	16_1(IOPS(K))	8_2(apply patch)
32	 191		 263		 263.5

Signed-off-by: Jianpeng Ma <jianpeng.ma@intel.com>
---
 src/osd/OSD.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/osd/OSD.cc b/src/osd/OSD.cc
index 133ebb984b257..23e918a73c868 100644
--- a/src/osd/OSD.cc
+++ b/src/osd/OSD.cc
@@ -10728,7 +10728,7 @@ void OSD::ShardedOpWQ::_enqueue(OpSchedulerItem&& item) {
 
   if (empty) {
     std::lock_guard l{sdata->sdata_wait_lock};
-    sdata->sdata_cond.notify_one();
+    sdata->sdata_cond.notify_all();
   }
 }