From: Haodong Tang <haodong.tang@intel.com>
Date: Fri, 30 Jun 2017 06:27:34 +0000 (+0800)
Subject: os/bluestore/KernelDevice: make the amount of reaped aio tunable
X-Git-Tag: v12.1.1~174^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=refs%2Fpull%2F16032%2Fhead;p=ceph.git

os/bluestore/KernelDevice: make the amount of reaped aio tunable

Signed-off-by: Haodong Tang <haodong.tang@intel.com>
---

diff --git a/src/common/config_opts.h b/src/common/config_opts.h
index 73ea6b30dcdc..6aa697e3c6d3 100644
--- a/src/common/config_opts.h
+++ b/src/common/config_opts.h
@@ -1053,6 +1053,7 @@ OPTION(bdev_inject_crash_flush_delay, OPT_INT, 2) // wait N more seconds on flus
 OPTION(bdev_aio, OPT_BOOL, true)
 OPTION(bdev_aio_poll_ms, OPT_INT, 250)  // milliseconds
 OPTION(bdev_aio_max_queue_depth, OPT_INT, 1024)
+OPTION(bdev_aio_reap_max, OPT_INT, 16)
 OPTION(bdev_block_size, OPT_INT, 4096)
 OPTION(bdev_debug_aio, OPT_BOOL, false)
 OPTION(bdev_debug_aio_suicide_timeout, OPT_FLOAT, 60.0)
diff --git a/src/os/bluestore/KernelDevice.cc b/src/os/bluestore/KernelDevice.cc
index 032e21362533..2de595ea0728 100644
--- a/src/os/bluestore/KernelDevice.cc
+++ b/src/os/bluestore/KernelDevice.cc
@@ -340,7 +340,7 @@ void KernelDevice::_aio_thread()
   int inject_crash_count = 0;
   while (!aio_stop) {
     dout(40) << __func__ << " polling" << dendl;
-    int max = 16;
+    int max = cct->_conf->bdev_aio_reap_max;
     aio_t *aio[max];
     int r = aio_queue.get_next_completed(cct->_conf->bdev_aio_poll_ms,
 					 aio, max);