Fix recent regression where adaptive throttles stopped adjusting.
Extends regression tests to test response of adaptive throttles to ack'ed and expired packets.mb-throttle-test
Justin Clark-Casey (justincc)
parent
b2e377f168
commit
5ab5d7fe47
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@ -447,31 +447,29 @@ namespace OpenSim.Region.ClientStack.LindenUDP
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long total = resend + land + wind + cloud + task + texture + asset;
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m_throttleClient.TargetDripRate = total;
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}
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else
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{
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TokenBucket bucket;
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bucket = m_throttleCategories[(int)ThrottleOutPacketType.Resend];
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bucket.RequestedDripRate = resend;
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TokenBucket bucket;
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bucket = m_throttleCategories[(int)ThrottleOutPacketType.Land];
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bucket.RequestedDripRate = land;
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bucket = m_throttleCategories[(int)ThrottleOutPacketType.Resend];
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bucket.RequestedDripRate = resend;
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bucket = m_throttleCategories[(int)ThrottleOutPacketType.Wind];
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bucket.RequestedDripRate = wind;
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bucket = m_throttleCategories[(int)ThrottleOutPacketType.Land];
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bucket.RequestedDripRate = land;
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bucket = m_throttleCategories[(int)ThrottleOutPacketType.Cloud];
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bucket.RequestedDripRate = cloud;
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bucket = m_throttleCategories[(int)ThrottleOutPacketType.Wind];
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bucket.RequestedDripRate = wind;
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bucket = m_throttleCategories[(int)ThrottleOutPacketType.Asset];
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bucket.RequestedDripRate = asset;
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bucket = m_throttleCategories[(int)ThrottleOutPacketType.Cloud];
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bucket.RequestedDripRate = cloud;
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bucket = m_throttleCategories[(int)ThrottleOutPacketType.Task];
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bucket.RequestedDripRate = task;
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bucket = m_throttleCategories[(int)ThrottleOutPacketType.Asset];
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bucket.RequestedDripRate = asset;
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bucket = m_throttleCategories[(int)ThrottleOutPacketType.Texture];
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bucket.RequestedDripRate = texture;
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}
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bucket = m_throttleCategories[(int)ThrottleOutPacketType.Task];
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bucket.RequestedDripRate = task;
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bucket = m_throttleCategories[(int)ThrottleOutPacketType.Texture];
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bucket.RequestedDripRate = texture;
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// Reset the packed throttles cached data
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m_packedThrottles = null;
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@ -184,7 +184,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP.Tests
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udpServer.Throttle.DebugLevel = 1;
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udpClient.ThrottleDebugLevel = 1;
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// Total is 28000
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// Total is 280000
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int resendBytes = 10000;
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int landBytes = 20000;
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int windBytes = 30000;
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@ -192,24 +192,38 @@ namespace OpenSim.Region.ClientStack.LindenUDP.Tests
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int taskBytes = 50000;
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int textureBytes = 60000;
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int assetBytes = 70000;
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int totalBytes = resendBytes + landBytes + windBytes + cloudBytes + taskBytes + textureBytes + assetBytes;
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SetThrottles(
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udpClient, resendBytes, landBytes, windBytes, cloudBytes, taskBytes, textureBytes, assetBytes);
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// We expect individual throttle changes to currently have no effect under adaptive, since this is managed
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// purely by that throttle. However, we expect the max to change.
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// XXX: At the moment we check against defaults, but at some point there should be a better test to
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// active see change over time.
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ThrottleRates defaultRates = udpServer.ThrottleRates;
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// Current total is 66750
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int totalBytes = defaultRates.Resend + defaultRates.Land + defaultRates.Wind + defaultRates.Cloud + defaultRates.Task + defaultRates.Texture + defaultRates.Asset;
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int totalMaxBytes = resendBytes + landBytes + windBytes + cloudBytes + taskBytes + textureBytes + assetBytes;
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// Ratio of current adaptive drip rate to requested bytes
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// XXX: Should hard code this as below so we don't rely on values given by tested code to construct
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// expected values.
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double commitRatio = (double)udpClient.FlowThrottle.AdjustedDripRate / udpClient.FlowThrottle.TargetDripRate;
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AssertThrottles(
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udpClient,
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defaultRates.Resend, defaultRates.Land, defaultRates.Wind, defaultRates.Cloud, defaultRates.Task,
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defaultRates.Texture, defaultRates.Asset, totalBytes, totalMaxBytes, 0);
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LLUDPServer.MTU, landBytes * commitRatio, windBytes * commitRatio, cloudBytes * commitRatio, taskBytes * commitRatio,
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textureBytes * commitRatio, assetBytes * commitRatio, udpClient.FlowThrottle.AdjustedDripRate, totalBytes, 0);
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// Test an increase in target throttle
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udpClient.FlowThrottle.AcknowledgePackets(35000);
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commitRatio = 0.2;
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AssertThrottles(
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udpClient,
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resendBytes * commitRatio, landBytes * commitRatio, windBytes * commitRatio, cloudBytes * commitRatio, taskBytes * commitRatio,
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textureBytes * commitRatio, assetBytes * commitRatio, udpClient.FlowThrottle.AdjustedDripRate, totalBytes, 0);
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// Test a decrease in target throttle
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udpClient.FlowThrottle.ExpirePackets(1);
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commitRatio = 0.1;
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AssertThrottles(
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udpClient,
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LLUDPServer.MTU, landBytes * commitRatio, windBytes * commitRatio, cloudBytes * commitRatio, taskBytes * commitRatio,
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textureBytes * commitRatio, assetBytes * commitRatio, udpClient.FlowThrottle.AdjustedDripRate, totalBytes, 0);
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}
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/// <summary>
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@ -376,9 +390,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP.Tests
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{
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ClientInfo ci = udpClient.GetClientInfo();
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// Console.WriteLine(
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// "Resend={0}, Land={1}, Wind={2}, Cloud={3}, Task={4}, Texture={5}, Asset={6}, TOTAL = {7}",
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// ci.resendThrottle, ci.landThrottle, ci.windThrottle, ci.cloudThrottle, ci.taskThrottle, ci.textureThrottle, ci.assetThrottle, ci.totalThrottle);
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// Console.WriteLine(
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// "Resend={0}, Land={1}, Wind={2}, Cloud={3}, Task={4}, Texture={5}, Asset={6}, TOTAL = {7}",
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// ci.resendThrottle, ci.landThrottle, ci.windThrottle, ci.cloudThrottle, ci.taskThrottle, ci.textureThrottle, ci.assetThrottle, ci.totalThrottle);
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Assert.AreEqual((int)resendBytes, ci.resendThrottle, "Resend");
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Assert.AreEqual((int)landBytes, ci.landThrottle, "Land");
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@ -77,8 +77,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
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/// </summary>
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protected Dictionary<TokenBucket,Int64> m_children = new Dictionary<TokenBucket,Int64>();
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#region Properties
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/// <summary>
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/// The parent bucket of this bucket, or null if this bucket has no
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/// parent. The parent bucket will limit the aggregate bandwidth of all
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@ -123,7 +121,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
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/// RequestedDripRate is set to 0. Really, this should always return m_dripRate and then we can get
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/// (m_dripRate == 0 ? TotalDripRequest : m_dripRate) on some other properties.
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/// </remarks>
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protected Int64 m_dripRate;
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public virtual Int64 RequestedDripRate
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{
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get { return (m_dripRate == 0 ? TotalDripRequest : m_dripRate); }
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@ -179,6 +176,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
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return (Int64)rate;
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}
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}
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protected Int64 m_dripRate;
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// <summary>
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// The maximum rate for flow control. Drip rate can never be greater than this.
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@ -190,30 +188,26 @@ namespace OpenSim.Region.ClientStack.LindenUDP
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/// </summary>
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public Int64 TotalDripRequest { get; protected set; }
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#endregion Properties
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#region Constructor
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/// <summary>
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/// Default constructor
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/// </summary>
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/// <param name="identifier">Identifier for this token bucket</param>
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/// <param name="parent">Parent bucket if this is a child bucket, or
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/// null if this is a root bucket</param>
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/// <param name="dripRate">Rate that the bucket fills, in bytes per
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/// second. If zero, the bucket always remains full</param>
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public TokenBucket(string identifier, TokenBucket parent, Int64 dripRate, Int64 maxDripRate)
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/// <param name="requestedDripRate">
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/// Requested rate that the bucket fills, in bytes per
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/// second. If zero, the bucket always remains full.
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/// </param>
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public TokenBucket(string identifier, TokenBucket parent, Int64 requestedDripRate, Int64 maxDripRate)
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{
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Identifier = identifier;
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Parent = parent;
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RequestedDripRate = dripRate;
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RequestedDripRate = requestedDripRate;
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MaxDripRate = maxDripRate;
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m_lastDrip = Util.EnvironmentTickCount();
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}
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#endregion Constructor
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/// <summary>
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/// Compute a modifier for the MaxBurst rate. This is 1.0, meaning
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/// no modification if the requested bandwidth is less than the
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@ -374,7 +368,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
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public Int64 TargetDripRate
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{
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get { return m_targetDripRate; }
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set { m_targetDripRate = Math.Max(0, value); }
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set
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{
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m_targetDripRate = Math.Max(value, m_minimumFlow);
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}
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}
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protected Int64 m_targetDripRate;
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@ -384,9 +381,11 @@ namespace OpenSim.Region.ClientStack.LindenUDP
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public virtual Int64 AdjustedDripRate
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{
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get { return m_dripRate; }
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set {
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set
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{
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m_dripRate = OpenSim.Framework.Util.Clamp<Int64>(value, m_minimumFlow, TargetDripRate);
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m_burstRate = (Int64)((double)m_dripRate * m_quantumsPerBurst);
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if (Parent != null)
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Parent.RegisterRequest(this, m_dripRate);
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}
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@ -399,14 +398,15 @@ namespace OpenSim.Region.ClientStack.LindenUDP
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/// </summary>
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protected const Int64 m_minimumFlow = m_minimumDripRate * 15;
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public AdaptiveTokenBucket(string identifier, TokenBucket parent, Int64 dripRate, Int64 maxDripRate, bool enabled)
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: base(identifier, parent, dripRate, maxDripRate)
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public AdaptiveTokenBucket(string identifier, TokenBucket parent, Int64 requestedDripRate, Int64 maxDripRate, bool enabled)
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: base(identifier, parent, requestedDripRate, maxDripRate)
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{
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AdaptiveEnabled = enabled;
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if (AdaptiveEnabled)
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{
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// m_log.DebugFormat("[TOKENBUCKET]: Adaptive throttle enabled");
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TargetDripRate = m_minimumFlow;
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AdjustedDripRate = m_minimumFlow;
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}
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}
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