{"id":592,"date":"2013-11-28T16:13:11","date_gmt":"2013-11-28T08:13:11","guid":{"rendered":"http:\/\/coderbee.net\/?p=592"},"modified":"2013-11-28T16:15:02","modified_gmt":"2013-11-28T08:15:02","slug":"java-7-sdp","status":"publish","type":"post","link":"https:\/\/coderbee.net\/index.php\/io\/20131128\/592","title":{"rendered":"Java 7 SDP"},"content":{"rendered":"<h3>\u540d\u8bcd\u89e3\u91ca\uff1a<\/h3>\n<ul>\n<li>RDMA\uff0cRemote Direct Memory Access\uff0c\u8fdc\u7a0b\u76f4\u63a5\u5185\u5b58\u5b58\u53d6\u3002\u4e3a\u4f4e\u5ef6\u8fdf\u5e94\u7528\u63d0\u4f9b\u4e86\u4e00\u79cd\u534f\u8bae\uff0c\u53ef\u4ee5\u76f4\u63a5\u8bbf\u95ee\u5176\u4ed6\u8ba1\u7b97\u673a\u7684\u5185\u5b58\uff0c\u800c\u4e0d\u9700\u8981\u64cd\u4f5c\u7cfb\u7edf\u7684\u53c2\u4e0e\u3002<\/li>\n<li>InfiniBand\uff1a InfiniBand (IB) \u662f\u4e00\u9879\u65b0\u7684\u57fa\u4e8e\u4ea4\u6362\u5149\u7ea4\u7ed3\u6784\u7684 I\/O \u6280\u672f\u3002 \u5b83\u4e3a\u5c06 I\/O \u8bbe\u5907\u8fde\u63a5\u5230\u4e3b\u673a\u4ee5\u53ca\u4e3b\u673a\u5230\u4e3b\u673a\u901a\u4fe1\u63d0\u4f9b\u4e86\u9ad8\u5e26\u5bbd\u3001\u4f4e\u5ef6\u8fdf\u7684\u4e92\u8fde\u3002InfiniBand\u63d0\u4f9b\u4e86\u5bf9RDMA\u7684\u652f\u6301\u3002<\/li>\n<li>SDP\uff1aSockets Direct Protocol\uff0c\u5957\u63a5\u5b57\u76f4\u63a5\u534f\u8bae\u3002\u662f\u4e00\u79cd\u7f51\u7edc\u534f\u8bae\u7528\u4e8e\u652f\u6301\u5728InfiniBand\u8fde\u63a5\u4e0a\u7684\u6d41\u8fde\u63a5\u3002<\/li>\n<\/ul>\n<h3>\u6982\u89c8<\/h3>\n<p>SDP\u672c\u8d28\u4e0a\u662f\u4e00\u79cdTCP\u7ed5\u8fc7\u6280\u672f\u3002\u5f53SDP\u5141\u8bb8\u65f6\uff0c\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u5c1d\u8bd5\u6253\u5f00\u4e00\u4e2aTCP\u8fde\u63a5\uff0cTCP\u673a\u5236\u88ab\u7ed5\u8fc7\u4e86\uff0c\u901a\u4fe1\u76f4\u63a5\u5230IB\u7f51\u7edc\u3002<\/p>\n<p>\u5f53\u5e94\u7528\u7a0b\u5e8f\u5c1d\u8bd5\u7ed1\u5b9a\u5230\u4e00\u4e2aTCP\u5730\u5740\u65f6\uff0c\u5e95\u5c42\u8f6f\u4ef6\u6839\u636e\u914d\u7f6e\u6587\u4ef6\u91cc\u7684\u4fe1\u606f\u51b3\u5b9a\u662f\u5426\u91cd\u65b0\u7ed1\u5b9a\u5230\u4e00\u4e2aSDP\u534f\u8bae\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u53ef\u4ee5\u5728\u7ed1\u5b9a\u8fc7\u7a0b\u6216\u8fde\u63a5\u8fc7\u7a0b\uff08\u4f46\u5bf9\u6bcf\u4e2a\u8fde\u63a5\u53ea\u53d1\u751f\u4e00\u6b21\uff09\u3002<\/p>\n<p>\u4e0d\u9700\u8981\u4fee\u6539\u5e94\u7528\u4ee3\u7801\u91cc\u7684API\u5c31\u53ef\u4ee5\u5229\u7528SDP\u534f\u8bae\uff1a\u5b9e\u73b0\u662f\u900f\u660e\u7684\u5e76\u88ab\u7ecf\u5178\u7f51\u7edc\uff08java.net\uff09\u548cNIO\uff08java.nio.channels\uff09\u5305\u652f\u6301\u3002<\/p>\n<p>SDP\u9ed8\u8ba4\u662f\u7981\u6b62\u7684\uff0c\u5f00\u542f\u6b65\u9aa4\uff1a<\/p>\n<ul>\n<li>\u521b\u5efa\u4e00\u4e2aSDP\u914d\u7f6e\u6587\u4ef6\uff1b<\/li>\n<li>\u8bbe\u7f6e\u7cfb\u7edf\u5c5e\u6027\u6307\u5411\u914d\u7f6e\u6587\u4ef6\u8def\u5f84\u3002<\/li>\n<\/ul>\n<p><!--more--><\/p>\n<h3>\u521b\u5efaSDP\u914d\u7f6e\u6587\u4ef6<\/h3>\n<p>\u914d\u7f6e\u6587\u4ef6\u7684\u7f16\u5199\u89c4\u5219\uff1a\u914d\u7f6e\u6587\u4ef6\u6709\u4e24\u79cd\u7c7b\u578b\u7684\u6761\u76ee\uff0c\u6ce8\u91ca\u884c\u548c\u89c4\u5219\u884c\u3002\u6ce8\u91ca\u884c\u662f\u4ee5<code>#<\/code>\u5b57\u7b26\u5f00\u5934\u7684\u3002<\/p>\n<p>\u89c4\u5219\u884c\u6709\u4e24\u79cd\u7c7b\u578b\uff1a<\/p>\n<ul>\n<li>bing\u89c4\u5219\uff1a\u53ea\u8981TCP\u5957\u63a5\u5b57\u7ed1\u5b9a\u5230\u4e0e\u89c4\u5219\u5339\u914d\u7684\u5730\u5740\u548c\u7aef\u53e3\uff0c\u5c31\u4f1a\u4f7f\u7528SDP\u534f\u8bae\u8fdb\u884c\u4f20\u8f93\u3002<\/li>\n<li>connect\u89c4\u5219\uff1a\u6ca1\u6709\u7ed1\u5b9a\u7684TCP\u5957\u63a5\u5b57\u5c1d\u8bd5\u8fde\u63a5\u5339\u914d\u89c4\u5219\u5730\u5740\u548c\u7aef\u53e3\u65f6\uff0c\u5c31\u4f1a\u4f7f\u7528SDP\u534f\u8bae\u8fdb\u884c\u4f20\u8f93\u3002<\/li>\n<\/ul>\n<p>\u914d\u7f6e\u6587\u4ef6\u793a\u4f8b\uff1a<\/p>\n<pre><code># \u7ed1\u5b9a\u5230192.0.2.1\u65f6\u4f7f\u7528SDP\uff0c\u7aef\u53e3\u4efb\u610f\u3002\nbind  192.0.2.1  *\n\n# \u8fde\u63a5\u5230192.0.2.*\u4e0a\u7684\u6240\u6709\u5e94\u7528\u670d\u52a1\u65f6\u90fd\u4f7f\u7528SDP\uff0c\u4e14\u7aef\u53e3\u662f\u5927\u4e8e\u7b49\u4e8e1024\u7684\u3002\u7528`-`\u6307\u5b9a\u7684\u7aef\u53e3\u8303\u56f4\u662f\u95ed\u533a\u95f4\u7684\u3002\nconnect  192.0.2.0\/24  1024-*\n\n# \u7528SDP\u8fde\u63a5\u5230web\u670d\u52a1\u5668\u6216\u6570\u636e\u5e93\nconnect examplecluster.example.com   80\nconnect examplecluster.example.com   3306\n<\/code><\/pre>\n<h3>\u542f\u52a8SDP<\/h3>\n<p>\u5728\u542f\u52a8JVM\u65f6\u6307\u5b9aSDP\u7684\u914d\u7f6e\u6587\u4ef6\u7684\u8def\u5f84\uff1a<\/p>\n<pre><code>java  -Dcom.sun.sdp.conf=sdp.conf  -Djava.net.preferIPv4Stack=true  Application.class\n<\/code><\/pre>\n<p>\u8fd9\u91cc\u542f\u52a8\u65f6\u8981\u6307\u5b9a\u7f51\u7edc\u683c\u5f0f\u4e3aIPv4Stack\u662f\u56e0\u4e3a\uff1a\u5c3d\u7ba1Java 7\u548cInfiniBand\u90fd\u652f\u6301IPv6\u7f51\u7edc\u683c\u5f0f\uff0c\u4f46Solaris\u548cLinux\u90fd\u4e0d\u652f\u6301\u4e24\u8005\u4e4b\u95f4\u7684\u6620\u5c04\u3002\u6240\u4ee5\u542f\u52a8\u652f\u6301SDP\u7684Java 7 VM\u65f6\uff0c\u8fd8\u662f\u8981\u4f7f\u7528\u57fa\u7840\u3001\u53ef\u9760\u7684IPv4\u7f51\u7edc\u683c\u5f0f\u3002<\/p>\n<h3>\u8c03\u8bd5SDP<\/h3>\n<p>\u901a\u8fc7<code>-Dcom.sun.sdp.debug<\/code>\u6807\u8bb0\u5141\u8bb8\u8f93\u51fa\u8c03\u8bd5\u4fe1\u606f\uff0c\u5982\u679c\u6307\u5b9a\u4e86\u65e5\u5fd7\u6587\u4ef6\uff0c\u5219\u8f93\u51fa\u5230\u8be5\u6587\u4ef6\uff0c\u5426\u5219\u8f93\u51fa\u5230\u6807\u51c6\u8f93\u51fa\u3002<\/p>\n<pre><code>java  -Dcom.sun.sdp.conf=sdp.conf  -Dcom.sun.sdp.debug  ExampleApplicaton\nBIND to 192.0.2.1:5000 (socket converted to SDP protocol)\nCONNECT to 129.156.232.160:80 (no match)\nCONNECT to 192.0.2.2:80 (socket converted to SDP protocol)\n\n\u6216\n\njava  -Dcom.sun.sdp.conf=sdp.conf  -Dcom.sun.sdp.debug=debug.log  ExampleApplication\n<\/code><\/pre>\n<h3>SDP\u7684\u6280\u672f\u95ee\u9898<\/h3>\n<p>IPv4\u5730\u5740\u662f32\u4f4d\u7684\uff0c\u4ee5\u5341\u8fdb\u5236\u683c\u5f0f\u4e66\u5199\uff0c\u7528\u53e5\u70b9\uff08.\uff09\u5206\u9694\u3002IPv6\u662f128\u4f4d\u7684\uff0c\u4ee5\u5341\u516d\u8fdb\u5236\u683c\u5f0f\u4e66\u5199\uff0c\u7528\u5192\u53f7\uff08:\uff09\u5206\u9694\u3002<\/p>\n<p>IPv4\u5730\u5740\u4e0d\u80fd\u7528\u5728IPv6\u91cc\uff0c\u4f46IPv6\u786e\u5b9e\u652f\u6301\u4e00\u7c7b\u7279\u6b8a\u5730\u5740\uff1aIPv4-mapped\u5730\u5740\u3002<\/p>\n<p>\u5728IPv4-mapped\u5730\u5740\u91cc\uff0c\u524d80\u4f4d\u8bbe\u7f6e\u4e3a0\uff0c\u63a5\u4e0b\u676516\u4f4d\u8bbe\u7f6e\u4e3a1\uff0c\u6700\u540e\u768432\u4e3a\u8868\u793aIPv4\u5730\u5740\u3002<\/p>\n<p>\u4f8b\u5982\uff1a<\/p>\n<pre><code>IPv4 address                  IPv4-mapped address (for use in IPv6)\n192.0.2.1                   ::ffff:192.0.2.1\n<\/code><\/pre>\n<p>\u9ed8\u8ba4\u662f\uff0c\u5982\u679cIB\u9002\u914d\u5668\u652f\u6301IPv6\uff0cJava\u5e73\u53f0\u5c31\u53ef\u4ee5\u4f7f\u7528IPv6\u3002\u4f46\u5f53\u524dSolaris\u548cLinux \u7cfb\u7edf\u4e0d\u652f\u6301IPv4-mapped\u5730\u5740\u3002\u7531\u4e8e\u8fd9\u4e2a\u539f\u56e0\uff0c\u5e94\u8be5\u5728JDK 7\u4e0b\u4f7f\u7528\u8fd9\u4e2a\u914d\u7f6e <code>-Djava.net.preferIPv4Stack=true<\/code> \u6765\u4f7f\u7528IPv4\u3002<\/p>\n<h3>\u652f\u6301\u7684Java API<\/h3>\n<pre><code>java.net package\n        Socket\n        ServerSocket\njava.nio.channels package:\n        SocketChannel\n        ServerSocketChannel\n        AsynchronousSocketChannel\n        AsynchronousServerSocketChannel\n<\/code><\/pre>\n<p>\u5f53SDP\u652f\u6301\u5141\u8bb8\u65f6\uff0c\u4e0d\u9700\u8981\u5bf9\u4ee3\u7801\u505a\u4efb\u4f55\u4fee\u6539\u5c31\u53ef\u4ee5\u5de5\u4f5c\uff0c\u7f16\u8bd1\u4e5f\u662f\u4e0d\u5fc5\u8981\u7684\u3002<\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong>\u4e00\u4e2a\u5957\u63a5\u5b57\u53ea\u7ed1\u5b9a\u4e00\u6b21\u3002\u4e00\u4e2a\u8fde\u63a5\u662f\u9690\u5f0f\u7ed1\u5b9a\u7684\u3002\u5982\u679c\u5957\u63a5\u5b57\u4e4b\u524d\u6ca1\u6709\u8fdb\u884c\u7ed1\u5b9a\uff0c\u5728<code>connect<\/code>\u8c03\u7528\u65f6\u8fdb\u884c\u7ed1\u5b9a\u3002<\/p>\n<p>\u5bf9\u4e8e\u4e0b\u9762\u7684\u4ee3\u7801\u7247\u6bb5\uff1a<\/p>\n<pre><code class=\"java\">AsynchronousSocketChannel ch = AsynchronousSocketChannel.open();\nch.bind(local);\nFuture&lt;Void&gt; result = ch.connect(remote);\n<\/code><\/pre>\n<p>\u5728<code>bind<\/code>\u88ab\u8c03\u7528\u65f6\uff0c\u5f02\u6b65\u5957\u63a5\u5b57\u901a\u9053\u88ab\u7ed1\u5b9a\u5230\u672c\u5730\u7684\u4e00\u4e2aTCP\u5730\u5740\u4e0a\uff0c\u4ee3\u7801\u7528\u8fd9\u4e2a\u5957\u63a5\u5b57\u5c1d\u8bd5\u8fde\u63a5\u8fdc\u7a0b\u5730\u5740\uff0c\u5982\u679c\u8fdc\u7a0b\u5730\u5740\u4f7f\u7528 InfiniBand\uff0c\u8fde\u63a5\u5c06\u4e0d\u4f1a\u8f6c\u6362\u5230SDP\uff0c\u56e0\u4e3a\u5957\u63a5\u5b57\u4e4b\u524d\u5df2\u88ab\u7ed1\u5b9a\u8fc7\u3002<\/p>\n<h3>SDP RDMA \u56fe\u793a<\/h3>\n<p><img decoding=\"async\" src=\"\/\/coderbee.net\/wp-content\/uploads\/2013\/11\/java7-sdp-rdma.png\" alt=\"java7-sdp-rdma\" \/><\/p>\n<p>\u501f\u52a9Java\u5230RDMA\u7684\u8fde\u63a5\u70b9\uff0cSDP\u4e5f\u80fd\u8ba9Java\u5177\u5907\u975e\u5e38\u6709\u529b\u7684\u201c\u96f6\u62f7\u8d1d\u201d\u80fd\u529b\u3002\u201c\u96f6\u62f7\u8d1d\u201d\u64cd\u4f5c\u6307CPU\u4e0d\u7528\u5c06\u4e00\u4e2a\u5185\u5b58\u533a\u57df\u7684\u6570\u636e\u62f7\u8d1d\u5230\u53e6\u4e00\u4e2a\u5185\u5b58\u533a\u57df\u3002<\/p>\n<ol>\n<li>Java 7\u5e94\u7528Node 1\uff08JVM\u542f\u52a8\u65f6\u4f7f\u7528SDP\uff09\u4f7f\u7528java.net.Socket API\u628a\u5e94\u7528\u6570\u636e\u5757\u8de8\u7f51\u7edc\u5199\u7ed9java.net.ServerSocket\u76d1\u542c\u5668\u3002<\/li>\n<li>JVM\u542f\u52a8\u65f6\u4f7f\u7528SDP\uff0c\u6240\u4ee5\u4f1a\u5b8c\u5168\u7ed5\u8fc7\u64cd\u4f5c\u7cfb\u7edf\u7684TCP\/IP\u6808\u2014\u2014\u5e94\u7528\u6570\u636e\u4f1a\u76f4\u63a5\u5199\u5230InfiniBand\u7684RDMA\uff08\u8981\u6c42\u7f51\u5361\u7684\u7269\u7406\u63d0\u4f9b\u8005\u662fInfiniBand\uff09\u3002<\/li>\n<li>Java 7\u5e94\u7528Node 2\uff08JVM\u542f\u52a8\u65f6\u4e5f\u4f7f\u7528SDP\uff09\u4f7f\u7528java.net.ServerSocket API\u76d1\u542c\u5e94\u7528\u6570\u636e\u5757\uff0c\u5e94\u7528\u6570\u636e\u5757\u7531java.net.Socket\u5199\u5165\u8005\u7ecfRDMA\u8de8\u7f51\u7edc\u5199\u5165\u3002\uff08\u8981\u6c42\u7f51\u5361\u7684\u7269\u7406\u63d0\u4f9b\u8005\u662fInfiniBand\uff09<\/li>\n<li>\u6570\u636e\u4f1a\u76f4\u63a5\u5199\u5165Java 7 VM\u7684\u5e94\u7528\u7f13\u51b2\u533a\uff01\u4e0d\u9700\u8981\u64cd\u4f5c\u7cfb\u7edf\u6216\u670d\u52a1\u8c03\u7528\u2014\u2014\u65e2\u4e0d\u9700\u8981Node 1\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u4e5f\u4e0d\u9700\u8981Node 2\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002\u8fd9\u5c31\u662fJava 7 SDP\u7684\u529f\u80fd\u3002<\/li>\n<\/ol>\n<h3>SDP TCP\u7ed5\u8fc7\u56fe\u793a<\/h3>\n<p><img decoding=\"async\" src=\"\/\/coderbee.net\/wp-content\/uploads\/2013\/11\/InfiniBand-tcp-bypass.png\" alt=\"InfiniBand-tcp-bypass\" \/><\/p>\n<h3>\u53c2\u8003\u94fe\u63a5<\/h3>\n<ul>\n<li><a href=\"http:\/\/docs.oracle.com\/javase\/tutorial\/sdp\/index.html\">http:\/\/docs.oracle.com\/javase\/tutorial\/sdp\/index.html<\/a><\/li>\n<li><a href=\"http:\/\/www.infoq.com\/cn\/articles\/Java-7-Sockets-Direct-Protocol\">http:\/\/www.infoq.com\/cn\/articles\/Java-7-Sockets-Direct-Protocol<\/a><\/li>\n<\/ul>\n<hr\/>\n<p>\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u5fae\u4fe1\u516c\u4f17\u53f7: <strong>coderbee\u7b14\u8bb0<\/strong>\uff0c\u53ef\u4ee5\u66f4\u53ca\u65f6\u56de\u590d\u4f60\u7684\u8ba8\u8bba\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"258\" height=\"258\" src=\"https:\/\/coderbee.net\/wp-content\/uploads\/2019\/01\/coderbee-note.jpg\" class=\"alignnone size-full wp-image-1707\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u540d\u8bcd\u89e3\u91ca\uff1a RDMA\uff0cRemote Direct Memory Access\uff0c\u8fdc &hellip; <a href=\"https:\/\/coderbee.net\/index.php\/io\/20131128\/592\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[118],"tags":[120,119],"_links":{"self":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts\/592"}],"collection":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/comments?post=592"}],"version-history":[{"count":4,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts\/592\/revisions"}],"predecessor-version":[{"id":598,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/posts\/592\/revisions\/598"}],"wp:attachment":[{"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/media?parent=592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/categories?post=592"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/coderbee.net\/index.php\/wp-json\/wp\/v2\/tags?post=592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}