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POtwemproxy (nutcracker) performance degradation with .net ServiceStack.Redis client
 

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  1. POtwemproxy (nutcracker) performance degradation with .net ServiceStack.Redis client
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    <p>Setup redis and nutcracker on CentOS 6.4. and trying to connect using ServiceStack.Redis client. Found major performance issue.</p> <p>For testing left only 1 redis instance</p> <pre><code>beta: listen: 0.0.0.0:22122 hash: fnv1a_64 distribution: ketama auto_eject_hosts: true #timeout: 5000 #server_retry_timeout: 2000 #server_failure_limit: 3 redis: true servers: #- 127.0.0.1:6379:1 - 127.0.0.1:6380:1 </code></pre> <p>In the following unit test I'm trying to send 100k strings to redis via nutcracker.</p> <pre><code>[TestClass] public class RedisProxyTest { public string host = "192.168.56.112"; //public int port = 6379; public int port = 22122; [TestMethod] public void TestMethod1() { var key = "l2"; var count = 100000; using (var redisClient = new RedisClient(host, port)) { var list = new List&lt;string&gt;(); for (int i = 0; i &lt; count; i++) { list.Add(Guid.NewGuid().ToString()); } Utils.TimeLog("Remove", () =&gt; redisClient.Remove(key)); Utils.TimeLog("AddRangeToList", () =&gt; redisClient.AddRangeToList(key, list)); } using (var redisClient = new RedisClient(host, port)) { redisClient.GetListCount(key); Utils.TimeLog("GetRangeFromList", () =&gt; { var ret = redisClient.GetRangeFromList(key, count / 2, count - 1); Console.WriteLine(ret.Count); }); } } } </code></pre> <p>On first few runs after nutcracker restarted AddRangeToList works with 1-2 sec. But with subsequent runs AddRangeToList performance drops significantly from few minutes even more than 20 mins (if no timeout configured). I cannot reproduce same when using redis directly. I didn't try any other client yet. Any ideas why?</p> <p>This what I see in console after unit test run:</p> <pre><code>Test Name: TestMethod1 Test Outcome: Passed Remove: 0.0331171 AddRangeToList: 806.8219166 50000 GetRangeFromList: 1.741737 </code></pre>
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