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mds: set laggy flag if dispatch takes too long

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This prevents, e.g., tick() from coming in immediately after and
closing out client sessions after we chew through something particularly
slow.
This commit is contained in:
Sage Weil 2010-04-01 16:13:41 -07:00
parent ea035fea80
commit fdd5709afc
1 changed files with 12 additions and 0 deletions
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12
src/mds/MDS.cc
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@ -1271,6 +1271,8 @@ bool MDS::_dispatch(Message *m)
{
bool check_from = false;
utime_t req_start = g_clock.now();
#define ALLOW_MESSAGES_FROM(peers) \
do { \
if (m->get_connection() && (m->get_connection()->get_peer_type() & (peers)) == 0) { \
@ -1442,6 +1444,16 @@ do { \
}
}
utime_t duration = g_clock.now();
duration -= req_start;
if (duration > g_conf.mds_session_timeout / 2) {
dout(0) << " dispatch took " << duration << " > " << g_conf.mds_tick_interval
<< " seconds, setting laggy flag" << dendl;
laggy = true;
return true;
}
// hack: thrash exports
static utime_t start;
utime_t now = g_clock.now();