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Type:
Bug
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Resolution: Done
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: Networking
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Windows
In 2.5.x, the hard upper limit of 20,000 connections has been removed (SERVER-8943). Windows hosts still have this upper limit, however, because there's a _WIN32 block in mongo/util/net/listen.cpp:
int getMaxConnections() {
#ifdef _WIN32
return DEFAULT_MAX_CONN;
#else
struct rlimit limit;
verify( getrlimit(RLIMIT_NOFILE,&limit) == 0 );
int max = (int)(limit.rlim_cur * .8);
LOG(1) << "fd limit"
<< " hard:" << limit.rlim_max
<< " soft:" << limit.rlim_cur
<< " max conn: " << max
<< endl;
return max;
#endif
}
Server output:
2014-01-16T11:33:13.279-0500 [initandlisten] options: { maxConns: 25000 }
2014-01-16T11:33:13.326-0500 [initandlisten] --maxConns too high, can only handle 20000
Version: adb2c9c330f67e24adbb5f1a306f8484befe93a9
- is related to
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SERVER-8943 max connections is hard coded to 20,000
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- Closed
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