FastDFS Java客户端性能测试，连接报错

bbyyzhang

使用FastDFS版本4.0.6
Java客户端版本v1.24
使用java客户端包test目录下TestLoad跑性能测试，刚开始一切正常，时间不久就开始出错

测试代码就上传下载两个两个线程

1. for (int i=0; i<2; i++)
   
2.                   {
   
3.                           (new UploadThread(i)).start();
   
4.                   }
   
5.                  
   
6.                   for (int i=0; i<2; i++)
   
7.                   {
   
8.                           (new DownloadThread(i)).start();
   
9.                   }

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错误日志如下：

1. upload file fail, error mesg: getStoreStorage fail, errno code: 0
   
2. connect to server 10.211.93.171:22122 fail
   
3. java.net.SocketException: No buffer space available (maximum connections reached?): connect
   
4.         at java.net.DualStackPlainSocketImpl.connect0(Native Method)
   
5.         at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
   
6.         at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
   
7.         at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
   
8.         at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
   
9.         at java.net.PlainSocketImpl.connect(Unknown Source)
   
10.         at java.net.SocksSocketImpl.connect(Unknown Source)
    
11.         at java.net.Socket.connect(Unknown Source)
    
12.         at org.csource.fastdfs.TrackerGroup.getConnection(TrackerGroup.java:47)
    
13.         at org.csource.fastdfs.TrackerGroup.getConnection(TrackerGroup.java:72)
    
14.         at org.csource.fastdfs.TrackerClient.getConnection(TrackerClient.java:58)
    
15.         at org.csource.fastdfs.TrackerClient.getStoreStorage(TrackerClient.java:91)
    
16.         at org.csource.fastdfs.StorageClient.newWritableStorageConnection(StorageClient.java:1938)
    
17.         at org.csource.fastdfs.StorageClient.do_upload_file(StorageClient.java:703)
    
18.         at org.csource.fastdfs.StorageClient.upload_file(StorageClient.java:208)
    
19.         at org.csource.fastdfs.StorageClient.upload_file(StorageClient.java:226)
    
20.         at org.csource.fastdfs.StorageClient1.upload_file1(StorageClient1.java:112)
    
21.         at org.csource.fastdfs.test.TestLoad$Uploader.uploadFile(TestLoad.java:78)
    
22.         at org.csource.fastdfs.test.TestLoad$UploadThread.run(TestLoad.java:166)
    
23. upload file fail, error mesg: getStoreStorage fail, errno code: 0
    
24. upload file fail, error mesg: No buffer space available (maximum connections reached?): connect
    

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求教，这是什么错误，该怎么解决。
配置文件tracker.conf 和storage.conf里的

1. # max concurrent connections this server supported
   
2. max_connections=1024
   
3. #max_connections=256
   
4. 
   
5. # work thread count, should <= max_connections
   
6. # default value is 4
   
7. # since V2.00
   
8. #work_threads=4
   
9. work_threads=48

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求大神指点

bbyyzhang

上传和下载都调整为一个线程时，第一次运行正常

1. endTime 1403576049518
   
2. uploadCaps 281 p/s
   
3. upload thread 0 exit, total_upload_count: 5000, success_upload_count: 5000, total_download_count: 4998, success_download_count: 4997
   
4. endTime 1403576049536
   
5. downLoadCaps 281 p/s
   
6. download thread 0 exit, total_download_count: 5000, success_download_count: 5000, fail_download_count: 0

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接着跑第二次，开始出现连接错

mineral_cu

看看你是不是windows系统。帮你google了一下，https://supportkb.riverbed.com/s ... mp;actp=LIST_RECENT

ESOLVING JAVA.NET.SOCKETEXCEPTION: NO BUFFER SPACE AVAILABLE (MAXIMUM CONNECTIONS REACHED?)
Categories: AppInternals Xpert (SteelCentral AppInternals), OPNET Dashboards
Solution Number: S23580                 Subscribe        Share via Email        Printer Friendly Version
ISSUE
We see the following exception in the logs.
java.net.SocketException: No buffer space available (maximum connections reached?): connect
Examples
SMP - AppInternals Xpert (AIX) Service Management Platform - smp.txt
java.net.SocketException: No buffer space available (maximum connections reached?): connect com.altaworks.smp.client.AwServerException: Server related error. Reason is: AwDirectorClient.constructor error getting director client stub com.altaworks.smp.client.AwServerException: Server related error. Reason is: com.altaworks.util.rmi.AwRmiException: Server related error. Reason is: RemoteException on RMI naming.lookup(): Exception creating connection to: localhost; nested exception is:
RPM Dashboards
2013-05-30 12:10:33,055 [Timer-3833] ERROR com.opnet.netcop.server.monitor.Monitor - Monitor.sendHeartbeat
java.net.SocketException: No buffer space available (maximum connections reached?): connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
SOLUTION
Root Cause
This issue occurs because of a race condition in the Ancillary Function Driver for WinSock (Afd.sys) that causes sockets to be leaked. With time, the issue that is described in the "Symptoms" section occurs if all available socket resources are exhausted.
Refernece: Kernel sockets leak on a multiprocessor computer that is running Windows Server 2008 R2 or Windows 7
Resolution
Install this Microsoft Hotfix KB2577795

Reboot System
ENVIRONMENT
AppInternals Xpert SMP or RPM Dashboards on the following OS:
Windows Server 2008 R2
Windows 7
BUG NUMBER
SPR-175667
NOTICE: Riverbed® product names have changed. Please refer to the Product List for a complete list of product names.