From 3a0ee8e49dbaa84ff0faf6fbad5d24945aafce1f Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@inktank.com>
Date: Sat, 24 Nov 2012 09:30:07 -0800
Subject: [PATCH] perfcounters: add 'perf' option to disable perf counters

Signed-off-by: Sage Weil <sage@inktank.com>
---
 src/common/config_opts.h    |  3 +++
 src/common/perf_counters.cc | 21 +++++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/src/common/config_opts.h b/src/common/config_opts.h
index 51f569c7e1f96..e2a29fca5095f 100644
--- a/src/common/config_opts.h
+++ b/src/common/config_opts.h
@@ -92,6 +92,8 @@ OPTION(keyfile, OPT_STR, "")
 OPTION(keyring, OPT_STR, "/etc/ceph/$cluster.$name.keyring,/etc/ceph/$cluster.keyring,/etc/ceph/keyring,/etc/ceph/keyring.bin")
 OPTION(heartbeat_interval, OPT_INT, 5)
 OPTION(heartbeat_file, OPT_STR, "")
+OPTION(perf, OPT_BOOL, true)       // enable internal perf counters
+
 OPTION(ms_tcp_nodelay, OPT_BOOL, true)
 OPTION(ms_initial_backoff, OPT_DOUBLE, .2)
 OPTION(ms_max_backoff, OPT_DOUBLE, 15.0)
@@ -104,6 +106,7 @@ OPTION(ms_bind_port_max, OPT_INT, 7100)
 OPTION(ms_rwthread_stack_bytes, OPT_U64, 1024 << 10)
 OPTION(ms_tcp_read_timeout, OPT_U64, 900)
 OPTION(ms_inject_socket_failures, OPT_U64, 0)
+
 OPTION(mon_data, OPT_STR, "/var/lib/ceph/mon/$cluster-$id")
 OPTION(mon_initial_members, OPT_STR, "")    // list of initial cluster mon ids; if specified, need majority to form initial quorum and create new cluster
 OPTION(mon_sync_fs_threshold, OPT_INT, 5)   // sync() when writing this many objects; 0 to disable.
diff --git a/src/common/perf_counters.cc b/src/common/perf_counters.cc
index 4166343adb484..144ea3c4d3bfb 100644
--- a/src/common/perf_counters.cc
+++ b/src/common/perf_counters.cc
@@ -97,6 +97,9 @@ PerfCounters::~PerfCounters()
 
 void PerfCounters::inc(int idx, uint64_t amt)
 {
+  if (!m_cct->_conf->perf)
+    return;
+
   Mutex::Locker lck(m_lock);
   assert(idx > m_lower_bound);
   assert(idx < m_upper_bound);
@@ -110,6 +113,9 @@ void PerfCounters::inc(int idx, uint64_t amt)
 
 void PerfCounters::dec(int idx, uint64_t amt)
 {
+  if (!m_cct->_conf->perf)
+    return;
+
   Mutex::Locker lck(m_lock);
   assert(idx > m_lower_bound);
   assert(idx < m_upper_bound);
@@ -123,6 +129,9 @@ void PerfCounters::dec(int idx, uint64_t amt)
 
 void PerfCounters::set(int idx, uint64_t amt)
 {
+  if (!m_cct->_conf->perf)
+    return;
+
   Mutex::Locker lck(m_lock);
   assert(idx > m_lower_bound);
   assert(idx < m_upper_bound);
@@ -136,6 +145,9 @@ void PerfCounters::set(int idx, uint64_t amt)
 
 uint64_t PerfCounters::get(int idx) const
 {
+  if (!m_cct->_conf->perf)
+    return 0;
+
   Mutex::Locker lck(m_lock);
   assert(idx > m_lower_bound);
   assert(idx < m_upper_bound);
@@ -147,6 +159,9 @@ uint64_t PerfCounters::get(int idx) const
 
 void PerfCounters::finc(int idx, double amt)
 {
+  if (!m_cct->_conf->perf)
+    return;
+
   Mutex::Locker lck(m_lock);
   assert(idx > m_lower_bound);
   assert(idx < m_upper_bound);
@@ -160,6 +175,9 @@ void PerfCounters::finc(int idx, double amt)
 
 void PerfCounters::fset(int idx, double amt)
 {
+  if (!m_cct->_conf->perf)
+    return;
+
   Mutex::Locker lck(m_lock);
   assert(idx > m_lower_bound);
   assert(idx < m_upper_bound);
@@ -173,6 +191,9 @@ void PerfCounters::fset(int idx, double amt)
 
 double PerfCounters::fget(int idx) const
 {
+  if (!m_cct->_conf->perf)
+    return 0.0;
+
   Mutex::Locker lck(m_lock);
   assert(idx > m_lower_bound);
   assert(idx < m_upper_bound);
-- 
2.39.5