\u5728\u6838\u5fc3\u5c64\u9762\uff0cNVMe over RDMA \u901a\u904e\u7e5e\u904e\u50b3\u7d71\u7db2\u8def\u5806\u758a\uff0c\u5be6\u73fe\u5132\u5b58\u88dd\u7f6e\u8207\u4e3b\u6a5f\u4e4b\u9593\u7684\u76f4\u63a5\u8a18\u61b6\u9ad4\u5b58\u53d6\u3002\u9019\u7a2e\u67b6\u69cb\u65b9\u6cd5\u986f\u8457\u964d\u4f4e\u4e86\u5ef6\u9072\u548c CPU \u8ca0\u8377\u3002\u8b93\u6211\u5011\u4f86\u6aa2\u8996\u5178\u578b\u7684\u8cc7\u6599\u6d41\u7a0b\uff1a<\/p>\n

\r\n\/\/ \u50b3\u7d71\u5132\u5b58\u5806\u758a\r\nApplication -> System Call -> TCP\/IP Stack -> Network Driver -> NIC -> Storage\r\n\r\n\/\/ NVMe over RDMA \u5806\u758a\r\nApplication -> NVMe Command -> RDMA Queue Pair -> Direct Memory Access -> Storage\r\n<\/code><\/pre>\n
RDMA \u7684\u5be6\u65bd\u5141\u8a31\u96f6\u8907\u88fd\u7db2\u8def\u50b3\u8f38\uff0c\u8cc7\u6599\u53ef\u4ee5\u76f4\u63a5\u5f9e\u4e00\u53f0\u96fb\u8166\u7684\u8a18\u61b6\u9ad4\u79fb\u52d5\u5230\u53e6\u4e00\u53f0\u96fb\u8166\u7684\u8a18\u61b6\u9ad4\uff0c\u7121\u9700\u7d93\u904e\u4efb\u4e00\u7cfb\u7d71\u7684\u8655\u7406\u5668\u3002\u9019\u5e36\u4f86\u4e86\u4ee5\u4e0b\u6548\u679c\uff1a<\/p>\n
\n
\u5ef6\u9072\u964d\u4f4e\u9ad8\u9054 80%<\/li>\n
CPU \u4f7f\u7528\u7387\u964d\u4f4e\u9ad8\u9054 30%<\/li>\n
\u6bcf\u79d2\u8f38\u5165\/\u8f38\u51fa\u64cd\u4f5c\u6b21\u6578\uff08IOPS\uff09\u6bd4\u50b3\u7d71\u5354\u5b9a\u63d0\u5347 2-3 \u500d<\/li>\n<\/ul>\n
\u6548\u80fd\u6307\u6a19\u8207\u57fa\u6e96\u6e2c\u8a66<\/strong><\/h2>\n
\u5728\u4f01\u696d\u4e3b\u6a5f\u8a17\u7ba1\u74b0\u5883\u4e2d\u7684\u5be6\u969b\u6e2c\u8a66\u5df2\u7d93\u5c55\u793a\u51fa\u986f\u8457\u7684\u6548\u80fd\u63d0\u5347\u3002\u4ee5\u4e0b\u662f\u6bd4\u8f03\u5206\u6790\uff1a<\/p>\n\n\n\n\n\n
\u6307\u6a19<\/th>\n
\u50b3\u7d71 iSCSI<\/th>\n
NVMe over RDMA<\/th>\n<\/tr>\n
\u5ef6\u9072<\/td>\n
~500\u03bcs<\/td>\n
~100\u03bcs<\/td>\n<\/tr>\n
IOPS<\/td>\n
500K<\/td>\n
1.5M<\/td>\n<\/tr>\n
\u983b\u5bec<\/td>\n
6 GB\/s<\/td>\n
12 GB\/s<\/td>\n<\/tr>\n<\/table>\n
\u5be6\u65bd\u6307\u5357\uff1a\u8a2d\u7f6e NVMe over RDMA<\/strong><\/h2>\n
\u5c0d\u65bc\u7ba1\u7406\u4f01\u696d\u4e3b\u6a5f\u8a17\u7ba1\u74b0\u5883\u7684\u7cfb\u7d71\u7ba1\u7406\u54e1\u548c IT \u5c08\u696d\u4eba\u54e1\u4f86\u8aaa\uff0c\u5be6\u65bd NVMe over RDMA \u9700\u8981\u4ed4\u7d30\u898f\u5283\u548c\u5177\u9ad4\u7684\u914d\u7f6e\u6b65\u9a5f\u3002\u4ee5\u4e0b\u662f\u8a73\u7d30\u7684\u5be6\u65bd\u6307\u5357\uff1a<\/p>\n
1. \u786c\u9ad4\u9700\u6c42<\/h3>\n
\u6210\u529f\u90e8\u7f72\u7684\u57fa\u672c\u7d44\u4ef6\uff1a<\/p>\n
\n
\u652f\u63f4 RDMA \u7684\u7db2\u8def\u4ecb\u9762\u5361\uff08RoCE \u6216 InfiniBand\uff09<\/li>\n
\u76f8\u5bb9 NVMe \u7684\u5132\u5b58\u88dd\u7f6e<\/li>\n
\u652f\u63f4 RDMA \u7684\u9ad8\u6548\u80fd\u4ea4\u63db\u6a5f<\/li>\n<\/ul>\n
2. \u7db2\u8def\u914d\u7f6e<\/h3>\n
\r\n# \u555f\u7528 RDMA \u5b50\u7cfb\u7d71\r\nsystemctl enable rdma\r\nsystemctl start rdma\r\n\r\n# \u914d\u7f6e RoCE \u53c3\u6578\r\nmlxconfig -d \/dev\/mst\/mt4119_pciconf0 set ROCE_ENABLED=1\r\nmlxconfig -d \/dev\/mst\/mt4119_pciconf0 set EQN=8\r\n\r\n# \u9a57\u8b49 RDMA \u914d\u7f6e\r\nibv_devinfo\r\n<\/code><\/pre>\n
3. NVMe \u76ee\u6a19\u8a2d\u7f6e<\/h3>\n
\u4f7f\u7528\u4ee5\u4e0b\u57fa\u672c\u547d\u4ee4\u914d\u7f6e NVMe \u76ee\u6a19\u5b50\u7cfb\u7d71\uff1a<\/p>\n
\r\n# \u8f09\u5165\u6240\u9700\u7684\u6838\u5fc3\u6a21\u7d44\r\nmodprobe nvmet\r\nmodprobe nvmet-rdma\r\n\r\n# \u5efa\u7acb NVMe \u76ee\u6a19\u547d\u540d\u7a7a\u9593\r\nmkdir \/sys\/kernel\/config\/nvmet\/subsystems\/nvmet-test\r\ncd \/sys\/kernel\/config\/nvmet\/subsystems\/nvmet-test\r\necho 1 > attr_allow_any_host\r\nmkdir namespaces\/1\r\necho -n \/dev\/nvme0n1 > namespaces\/1\/device_path\r\necho 1 > namespaces\/1\/enable\r\n<\/code><\/pre>\n
\u6548\u80fd\u6700\u4f73\u5316\u7b56\u7565<\/strong><\/h2>\n
\u70ba\u4e86\u6700\u5927\u5316 NVMe over RDMA \u7684\u6548\u76ca\uff0c\u9700\u8981\u4ed4\u7d30\u8abf\u6821\u548c\u6700\u4f73\u5316\u3002\u4ee5\u4e0b\u662f\u95dc\u9375\u7b56\u7565\uff1a<\/p>\n
1. \u7db2\u8def\u8abf\u6821<\/h3>\n
\r\n# \u6700\u4f73\u5316\u7db2\u8def\u8a2d\u5b9a\r\nsysctl -w net.core.rmem_max=2147483647\r\nsysctl -w net.core.wmem_max=2147483647\r\nsysctl -w net.ipv4.tcp_rmem=\"4096 87380 2147483647\"\r\nsysctl -w net.ipv4.tcp_wmem=\"4096 65536 2147483647\"\r\n<\/code><\/pre>\n
\u9019\u4e9b\u8a2d\u5b9a\u53ef\u6700\u4f73\u5316 RDMA \u64cd\u4f5c\u7684\u7db2\u8def\u7de9\u885d\u5340\u5927\u5c0f\uff0c\u964d\u4f4e\u5ef6\u9072\u4e26\u63d0\u5347\u9ad8\u6548\u80fd\u5132\u5b58\u74b0\u5883\u4e2d\u7684\u50b3\u8f38\u91cf\u3002<\/p>\n
2. \u4f47\u5217\u7ba1\u7406<\/h3>\n
\u9069\u7576\u7684\u4f47\u5217\u6df1\u5ea6\u914d\u7f6e\u5c0d\u65bc\u6700\u4f73\u6548\u80fd\u81f3\u95dc\u91cd\u8981\uff1a<\/p>\n
\n
\u6839\u64da\u5de5\u4f5c\u8ca0\u8f09\u7279\u6027\u8a2d\u5b9a\u4f47\u5217\u6df1\u5ea6<\/li>\n
\u4f7f\u7528 nvmeadm \u7b49\u5de5\u5177\u76e3\u63a7\u4f47\u5217\u7d71\u8a08\u8cc7\u6599<\/li>\n
\u6839\u64da\u6548\u80fd\u6307\u6a19\u52d5\u614b\u8abf\u6574\u4f47\u5217\u53c3\u6578<\/li>\n<\/ul>\n
\u6548\u80fd\u76e3\u63a7\u8207\u6545\u969c\u6392\u9664<\/strong><\/h2>\n
\u5728\u4f01\u696d\u4e3b\u6a5f\u8a17\u7ba1\u74b0\u5883\u4e2d\uff0c\u6709\u6548\u7684\u76e3\u63a7\u5c0d\u65bc\u7dad\u6301 NVMe over RDMA \u7684\u6700\u4f73\u6548\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u5b8c\u6574\u7684\u76e3\u63a7\u67b6\u69cb\uff1a<\/p>\n
1. \u95dc\u9375\u6548\u80fd\u6307\u6a19<\/h3>\n
\r\n# \u76e3\u63a7 RDMA \u6548\u80fd\u6307\u6a19\r\nperfquery -r\r\n# \u6aa2\u67e5 NVMe \u7d71\u8a08\u8cc7\u6599\r\nnvme smart-log \/dev\/nvme0n1\r\n\r\n# \u81ea\u8a02\u76e3\u63a7\u8173\u672c\r\n#!\/bin\/bash\r\nwhile true; do\r\n    date\r\n    rdma_stats=$(perfquery -r)\r\n    nvme_stats=$(nvme smart-log \/dev\/nvme0n1)\r\n    echo \"$rdma_stats\" >> \/var\/log\/rdma_stats.log\r\n    echo \"$nvme_stats\" >> \/var\/log\/nvme_stats.log\r\n    sleep 300\r\ndone\r\n<\/code><\/pre>\n
\u5be6\u969b\u61c9\u7528\u5834\u666f<\/strong><\/h2>\n
\u5728\u73fe\u4ee3\u8cc7\u6599\u4e2d\u5fc3\u74b0\u5883\u4e2d\uff0cNVMe over RDMA \u5728\u5404\u7a2e\u4f7f\u7528\u5834\u666f\u4e2d\u5c55\u73fe\u51fa\u5353\u8d8a\u7684\u6548\u80fd\uff1a<\/p>\n
1. \u9ad8\u983b\u4ea4\u6613\u5e73\u53f0<\/h3>\n
\u63a1\u7528\u4f01\u696d\u4e3b\u6a5f\u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\u7684\u91d1\u878d\u6a5f\u69cb\u5831\u544a\uff1a<\/p>\n
\n
\u5ef6\u9072\u5f9e 100\u03bcs \u964d\u4f4e\u5230 20\u03bcs<\/li>\n
\u4ea4\u6613\u8655\u7406\u80fd\u529b\u63d0\u5347 300%<\/li>\n
\u5c16\u5cf0\u4ea4\u6613\u6642\u6bb5\u7684\u7cfb\u7d71\u7a69\u5b9a\u6027\u63d0\u5347<\/li>\n<\/ul>\n
2. \u5927\u6578\u64da\u5206\u6790<\/h3>\n
\u8655\u7406\u5927\u578b\u8cc7\u6599\u96c6\u7684\u7d44\u7e54\u7d93\u6b77\uff1a<\/p>\n
\n
\u67e5\u8a62\u56de\u61c9\u6642\u9593\u6539\u5584 65%<\/li>\n
\u8cc7\u6e90\u4f7f\u7528\u7387\u6700\u4f73\u5316 40%<\/li>\n
\u589e\u5f37\u4e26\u884c\u8655\u7406\u80fd\u529b<\/li>\n<\/ul>\n
\u672a\u4f86\u8da8\u52e2\u8207\u767c\u5c55<\/strong><\/h2>\n
NVMe over RDMA \u6280\u8853\u7684\u6f14\u9032\u6301\u7e8c\u5851\u9020\u9ad8\u6548\u80fd\u5132\u5b58\u7db2\u8def\u3002\u4e3b\u8981\u767c\u5c55\u5305\u62ec\uff1a<\/p>\n
1. \u65b0\u8208\u6a19\u6e96<\/h3>\n
\u6b63\u5728\u958b\u767c\u65b0\u7684\u898f\u7bc4\u4ee5\u589e\u5f37 NVMe over RDMA\uff1a<\/p>\n
\r\n\/\/ \u4e0b\u4e00\u4ee3\u5354\u5b9a\u5806\u758a\r\n\u61c9\u7528\u5c64\r\n    \u2193\r\n\u589e\u5f37\u578b NVMe \u547d\u4ee4\u96c6\r\n    \u2193\r\n\u9032\u968e RDMA \u50b3\u8f38\r\n    \u2193\r\n\u667a\u6167\u578b\u67b6\u69cb\u7ba1\u7406\r\n<\/code><\/pre>\n
2. \u8207 AI\/ML \u5de5\u4f5c\u8ca0\u8f09\u7684\u6574\u5408<\/h3>\n
\u4eba\u5de5\u667a\u6167\u548c\u6a5f\u5668\u5b78\u7fd2\u61c9\u7528\u7a0b\u5f0f\u5f9e NVMe over RDMA \u7684\u529f\u80fd\u4e2d\u7372\u5f97\u986f\u8457\u6548\u76ca\uff1a<\/p>\n
\n
\u7e2e\u77ed\u6a21\u578b\u8a13\u7df4\u6642\u9593<\/li>\n
\u63d0\u5347\u8cc7\u6599\u7ba1\u9053\u6548\u7387<\/li>\n
\u589e\u5f37\u5373\u6642\u63a8\u8ad6\u6548\u80fd<\/li>\n<\/ul>\n
1. \u9ad8\u983b\u4ea4\u6613\u5e73\u53f0<\/h3>\n
\u63a1\u7528\u4f01\u696d\u4e3b\u6a5f\u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\u7684\u91d1\u878d\u6a5f\u69cb\u5831\u544a\uff1a<\/p>\n
\n
\u5ef6\u9072\u5f9e 100\u03bcs \u964d\u4f4e\u5230 20\u03bcs<\/li>\n
\u4ea4\u6613\u8655\u7406\u80fd\u529b\u63d0\u5347 300%<\/li>\n
\u5c16\u5cf0\u4ea4\u6613\u6642\u6bb5\u7684\u7cfb\u7d71\u7a69\u5b9a\u6027\u63d0\u5347<\/li>\n<\/ul>\n
2. \u5927\u6578\u64da\u5206\u6790<\/h3>\n
\u8655\u7406\u5927\u578b\u8cc7\u6599\u96c6\u7684\u7d44\u7e54\u7d93\u6b77\uff1a<\/p>\n
\n
\u67e5\u8a62\u56de\u61c9\u6642\u9593\u6539\u5584 65%<\/li>\n
\u8cc7\u6e90\u4f7f\u7528\u7387\u6700\u4f73\u5316 40%<\/li>\n
\u589e\u5f37\u4e26\u884c\u8655\u7406\u80fd\u529b<\/li>\n<\/ul>\n
\u672a\u4f86\u8da8\u52e2\u8207\u767c\u5c55<\/strong><\/h2>\n
NVMe over RDMA \u6280\u8853\u7684\u6f14\u9032\u6301\u7e8c\u5851\u9020\u9ad8\u6548\u80fd\u5132\u5b58\u7db2\u8def\u3002\u4e3b\u8981\u767c\u5c55\u5305\u62ec\uff1a<\/p>\n
1. \u65b0\u8208\u6a19\u6e96<\/h3>\n
\u6b63\u5728\u958b\u767c\u65b0\u7684\u898f\u7bc4\u4ee5\u589e\u5f37 NVMe over RDMA\uff1a<\/p>\n
\r\n\/\/ \u4e0b\u4e00\u4ee3\u5354\u5b9a\u5806\u758a\r\n\u61c9\u7528\u5c64\r\n    \u2193\r\n\u589e\u5f37\u578b NVMe \u547d\u4ee4\u96c6\r\n    \u2193\r\n\u9032\u968e RDMA \u50b3\u8f38\r\n    \u2193\r\n\u667a\u6167\u578b\u67b6\u69cb\u7ba1\u7406\r\n<\/code><\/pre>\n
2. \u8207 AI\/ML \u5de5\u4f5c\u8ca0\u8f09\u7684\u6574\u5408<\/h3>\n
\u4eba\u5de5\u667a\u6167\u548c\u6a5f\u5668\u5b78\u7fd2\u61c9\u7528\u7a0b\u5f0f\u5f9e NVMe over RDMA \u7684\u529f\u80fd\u4e2d\u7372\u5f97\u986f\u8457\u6548\u76ca\uff1a<\/p>\n
\n
\u7e2e\u77ed\u6a21\u578b\u8a13\u7df4\u6642\u9593<\/li>\n
\u63d0\u5347\u8cc7\u6599\u7ba1\u9053\u6548\u7387<\/li>\n
\u589e\u5f37\u5373\u6642\u63a8\u8ad6\u6548\u80fd<\/li>\n<\/ul>\n
\u6210\u672c\u6548\u76ca\u5206\u6790<\/strong><\/h2>\n
\u4e86\u89e3 NVMe over RDMA \u5be6\u65bd\u7684\u8ca1\u52d9\u5f71\u97ff\uff1a<\/p>\n\n\n\n\n\n
\u7d44\u4ef6<\/th>\n
\u6295\u8cc7\u6c34\u6e96<\/th>\n
\u6295\u8cc7\u56de\u5831\u9031\u671f<\/th>\n<\/tr>\n
RDMA \u786c\u9ad4<\/td>\n
\u4e2d\u7b49<\/td>\n
6-12 \u500b\u6708<\/td>\n<\/tr>\n
NVMe \u5132\u5b58<\/td>\n
\u9ad8<\/td>\n
12-18 \u500b\u6708<\/td>\n<\/tr>\n
\u5be6\u65bd<\/td>\n
\u4e2d\u7b49<\/td>\n
3-6 \u500b\u6708<\/td>\n<\/tr>\n<\/table>\n
\u6295\u8cc7 NVMe over RDMA \u6280\u8853\u901a\u5e38\u901a\u904e\u4ee5\u4e0b\u65b9\u5f0f\u5e36\u4f86\u986f\u8457\u56de\u5831\uff1a<\/p>\n
\n
\u901a\u904e\u63d0\u5347\u6548\u7387\u964d\u4f4e\u71df\u904b\u6210\u672c<\/li>\n
\u6548\u80fd\u63d0\u5347\u5e36\u4f86\u66f4\u597d\u7684\u670d\u52d9\u54c1\u8cea<\/li>\n
\u964d\u4f4e\u7dad\u8b77\u9700\u6c42<\/li>\n
\u63d0\u5347\u8cc7\u6e90\u5229\u7528\u7387<\/li>\n<\/ul>\n
\u7d50\u8ad6<\/strong><\/h2>\n
NVMe over RDMA \u4ee3\u8868\u4e86\u9ad8\u6548\u80fd\u5132\u5b58\u7db2\u8def\u7684\u91cd\u5927\u9032\u6b65\uff0c\u70ba\u4f01\u696d\u4e3b\u6a5f\u8a17\u7ba1\u74b0\u5883\u63d0\u4f9b\u524d\u6240\u672a\u6709\u7684\u6548\u80fd\u512a\u52e2\u3002\u96a8\u8457\u7d44\u7e54\u6301\u7e8c\u8981\u6c42\u66f4\u5feb\u3001\u66f4\u9ad8\u6548\u7684\u8cc7\u6599\u8655\u7406\u80fd\u529b\uff0c\u9019\u9805\u6280\u8853\u7ad9\u5728\u5132\u5b58\u5275\u65b0\u7684\u6700\u524d\u6cbf\u3002\u964d\u4f4e\u5ef6\u9072\u3001\u63d0\u9ad8\u50b3\u8f38\u91cf\u548c\u6539\u5584\u8cc7\u6e90\u5229\u7528\u7387\u7684\u7d44\u5408\uff0c\u4f7f\u5176\u6210\u70ba\u73fe\u4ee3\u8cc7\u6599\u4e2d\u5fc3\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u73fe\u4ee3\u8cc7\u6599\u4e2d\u5fc3\u7684\u5132\u5b58\u9769\u547d \u5728\u9ad8\u6548\u80fd\u5132\u5b58\u7db2\u8def\u9818\u57df\uff0cNVMe over RDMA\uff08\u9060\u7aef\u76f4\u63a5\u8a18\u61b6\u9ad4\u5b58\u53d6\uff09\u4ee3\u8868\u4e00\u9805\u7a81\u7834\u6027 […]<\/p>\n
Read More…<\/a><\/p>\n","protected":false},"author":3,"featured_media":22742,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[6801,6802,6800,6803,4508],"class_list":["post-22766","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hong-kong-dedicated-server-tc","tag-high-performance-storage-tc","tag-data-center-networking-tc","tag-nvme-over-rdma-tc","tag-enterprise-hosting-tc","tag-rdma-technology-tc"],"acf":[],"yoast_head":"\n