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2005-07-11 jrandom

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* Reduced the growth factor on the slow start and congestion avoidance for
      the streaming lib.
    * Adjusted some of the I2PTunnelServer threading to use a small pool of
      handlers, rather than launching off new threads which then immediately
      launch off an I2PTunnelRunner instance (which launches 3 more threads..)
    * Don't persist session keys / session tags (not worth it, for now)
    * Added some detection and handling code for duplicate session tags being
      delivered (root cause still not addressed)
    * Make the PRNG's buffer size configurable (via the config property
      "i2p.prng.totalBufferSizeKB=4096")
    * Disable SSU flooding by default (duh)
    * Updates to the StreamSink apps for better throttling tests.
This commit is contained in:
jrandom
2005-07-11 23:06:23 +00:00
committed by zzz
parent 51c492b842
commit 9d5f16a889
21 changed files with 317 additions and 146 deletions
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14
apps/streaming/java/src/net/i2p/client/streaming/ConnectionManager.java
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@ -68,6 +68,7 @@ public class ConnectionManager {
_context.statManager().createRateStat("stream.con.lifetimeRTT", "What is the final RTT when a stream closes?", "Stream", new long[] { 60*60*1000, 24*60*60*1000 });
_context.statManager().createRateStat("stream.con.lifetimeCongestionSeenAt", "When was the last congestion seen at when a stream closes?", "Stream", new long[] { 60*60*1000, 24*60*60*1000 });
_context.statManager().createRateStat("stream.con.lifetimeSendWindowSize", "What is the final send window size when a stream closes?", "Stream", new long[] { 60*60*1000, 24*60*60*1000 });
_context.statManager().createRateStat("stream.receiveActive", "How many streams are active when a new one is received (period being not yet dropped)", "Stream", new long[] { 60*60*1000, 24*60*60*1000 });
}
Connection getConnectionByInboundId(byte[] id) {
@ -109,7 +110,14 @@ public class ConnectionManager {
byte receiveId[] = new byte[4];
_context.random().nextBytes(receiveId);
boolean reject = false;
int active = 0;
int total = 0;
synchronized (_connectionLock) {
total = _connectionByInboundId.size();
for (Iterator iter = _connectionByInboundId.values().iterator(); iter.hasNext(); ) {
if ( ((Connection)iter.next()).getIsConnected() )
active++;
}
if (locked_tooManyStreams()) {
reject = true;
} else {
@ -127,6 +135,8 @@ public class ConnectionManager {
}
}
_context.statManager().addRateData("stream.receiveActive", active, total);
if (reject) {
if (_log.shouldLog(Log.WARN))
_log.warn("Refusing connection since we have exceeded our max of "
@ -227,6 +237,8 @@ public class ConnectionManager {
}
private boolean locked_tooManyStreams() {
if (_maxConcurrentStreams <= 0) return false;
if (_connectionByInboundId.size() < _maxConcurrentStreams) return false;
int active = 0;
for (Iterator iter = _connectionByInboundId.values().iterator(); iter.hasNext(); ) {
Connection con = (Connection)iter.next();
@ -238,8 +250,6 @@ public class ConnectionManager {
_log.info("More than 100 connections! " + active
+ " total: " + _connectionByInboundId.size());
if (_maxConcurrentStreams <= 0) return false;
if (_connectionByInboundId.size() < _maxConcurrentStreams) return false;
return (active >= _maxConcurrentStreams);
}

4
apps/streaming/java/src/net/i2p/client/streaming/ConnectionOptions.java
View File

@ -98,8 +98,8 @@ public class ConnectionOptions extends I2PSocketOptionsImpl {
setInactivityTimeout(getInt(opts, PROP_INACTIVITY_TIMEOUT, 5*60*1000));
setInactivityAction(getInt(opts, PROP_INACTIVITY_ACTION, INACTIVITY_ACTION_DISCONNECT));
setInboundBufferSize(getMaxMessageSize() * (Connection.MAX_WINDOW_SIZE + 2));
setCongestionAvoidanceGrowthRateFactor(getInt(opts, PROP_CONGESTION_AVOIDANCE_GROWTH_RATE_FACTOR, 2));
setSlowStartGrowthRateFactor(getInt(opts, PROP_SLOW_START_GROWTH_RATE_FACTOR, 2));
setCongestionAvoidanceGrowthRateFactor(getInt(opts, PROP_CONGESTION_AVOIDANCE_GROWTH_RATE_FACTOR, 1));
setSlowStartGrowthRateFactor(getInt(opts, PROP_SLOW_START_GROWTH_RATE_FACTOR, 1));
setConnectTimeout(getInt(opts, PROP_CONNECT_TIMEOUT, Connection.DISCONNECT_TIMEOUT));
setMaxWindowSize(getInt(opts, PROP_MAX_WINDOW_SIZE, Connection.MAX_WINDOW_SIZE));

2
apps/streaming/java/src/net/i2p/client/streaming/ConnectionPacketHandler.java
View File

@ -256,7 +256,7 @@ public class ConnectionPacketHandler {
newWindowSize += 1;
} else {
// slow start, but modified to take into account the fact
// that windows in the streaming lib are messages, not bytes,
// that windows in the streaming lib are messages, not bytes,
// so we only grow 1 every N times (where N = the slow start factor)
int shouldIncrement = _context.random().nextInt(con.getOptions().getSlowStartGrowthRateFactor());
if (shouldIncrement <= 0)