)]}' { "commit": "aeeb455bd857fee83b1316e70c8e8c277346704a", "tree": "aa7cf017f3b53c892c53286fd1475761b6eedd03", "parents": [ "ba5a7f4f9f05b69fdeec036bbfc2826d63b07b74" ], "author": { "name": "Andrei Vagin", "email": "avagin@google.com", "time": "Tue Oct 22 11:54:14 2019 -0700" }, "committer": { "name": "gVisor bot", "email": "gvisor-bot@google.com", "time": "Tue Oct 22 11:54:41 2019 -0700" }, "message": "netstack/tcp: software segmentation offload\n\nRight now, we send each tcp packet separately, we call one system\ncall per-packet. This patch allows to generate multiple tcp packets\nand send them by sendmmsg.\n\nThe arguable part of this CL is a way how to handle multiple headers.\nThis CL adds the next field to the Prepandable buffer.\n\nNginx test results:\n\nServer Software: nginx/1.15.9\nServer Hostname: 10.138.0.2\nServer Port: 8080\n\nDocument Path: /10m.txt\nDocument Length: 10485760 bytes\n\nw/o gso:\nConcurrency Level: 5\nTime taken for tests: 5.491 seconds\nComplete requests: 100\nFailed requests: 0\nTotal transferred: 1048600200 bytes\nHTML transferred: 1048576000 bytes\nRequests per second: 18.21 [#/sec] (mean)\nTime per request: 274.525 [ms] (mean)\nTime per request: 54.905 [ms] (mean, across all concurrent requests)\nTransfer rate: 186508.03 [Kbytes/sec] received\n\nsw-gso:\n\nConcurrency Level: 5\nTime taken for tests: 3.852 seconds\nComplete requests: 100\nFailed requests: 0\nTotal transferred: 1048600200 bytes\nHTML transferred: 1048576000 bytes\nRequests per second: 25.96 [#/sec] (mean)\nTime per request: 192.576 [ms] (mean)\nTime per request: 38.515 [ms] (mean, across all concurrent requests)\nTransfer rate: 265874.92 [Kbytes/sec] received\n\nw/o gso:\n$ ./tcp_benchmark --client --duration 15 --ideal\n[SUM] 0.0-15.1 sec 2.20 GBytes 1.25 Gbits/sec\n\nsoftware gso:\n$ tcp_benchmark --client --duration 15 --ideal --gso $((1\u003c\u003c16)) --swgso\n[SUM] 0.0-15.1 sec 3.99 GBytes 2.26 Gbits/sec\n\nPiperOrigin-RevId: 276112677\n", "tree_diff": [ { "type": "modify", "old_id": "4287464f3e813d69fb977d58ff1eb706cee5237c", "old_mode": 33188, "old_path": "tcpip/buffer/prependable.go", "new_id": "48a2a2713a8051f10726db9c22950cbc8aec4b5a", "new_mode": 33188, "new_path": "tcpip/buffer/prependable.go" }, { "type": "modify", "old_id": "969876341eb87eae07aba8304ad59c0f570efd32", "old_mode": 33188, "old_path": "tcpip/header/checksum.go", "new_id": "b67ceca5bd3f7434157881159d9eeba1a432a066", "new_mode": 33188, "new_path": "tcpip/header/checksum.go" }, { "type": "add", "old_id": "0000000000000000000000000000000000000000", "old_mode": 0, "old_path": "/dev/null", "new_id": "43f0447797430988dbc9d0af30f700685b7bdf45", "new_mode": 33188, "new_path": "tcpip/header/checksum_test.go" }, { "type": "modify", "old_id": "3c62b5a9e1610a9207c57c05889a6c7f8002c5b3", "old_mode": 33188, "old_path": "tcpip/link/channel/channel.go", "new_id": "fdaa8be022a38471efaa4bd4280c380fef6444a4", "new_mode": 33188, "new_path": "tcpip/link/channel/channel.go" }, { "type": "modify", "old_id": "de60d0df1c57e39793ce5199582555c084b7bf2e", "old_mode": 33188, "old_path": "tcpip/link/fdbased/endpoint.go", "new_id": "776db510009da02c419093f90fe8e1b7e0f6aba2", "new_mode": 33188, "new_path": "tcpip/link/fdbased/endpoint.go" }, { "type": "modify", "old_id": "6ab307103fb83806e000f91aa1eee4c457ef3fe2", "old_mode": 33188, "old_path": "tcpip/link/fdbased/packet_dispatchers.go", "new_id": "adf9096d2f7ff0cae23a4fd88efefa87006aa2b3", "new_mode": 33188, "new_path": "tcpip/link/fdbased/packet_dispatchers.go" }, { "type": "modify", "old_id": "0e005c15ce5384d234b699937b5d0d8fb6f2792e", "old_mode": 33188, "old_path": "tcpip/link/loopback/loopback.go", "new_id": "dc9a9e655afb77756c10b946af9572eab04a8bd6", "new_mode": 33188, "new_path": "tcpip/link/loopback/loopback.go" }, { "type": "modify", "old_id": "71bcee99ff47f4d406f9ee7cd852b407866e4988", "old_mode": 33188, "old_path": "tcpip/link/muxed/injectable.go", "new_id": "397431cc8700bbbf49933b4160d9af4d8aaa6385", "new_mode": 33188, "new_path": "tcpip/link/muxed/injectable.go" }, { "type": "modify", "old_id": "c4e122b9aa1d896bb666e11a2ee86cb70f33eadb", "old_mode": 33188, "old_path": "tcpip/link/rawfile/rawfile_unsafe.go", "new_id": "762c5c96514f1df88c18a2fdf1fe0515a96a297c", "new_mode": 33188, "new_path": "tcpip/link/rawfile/rawfile_unsafe.go" }, { "type": "modify", "old_id": "b6fdd6d8b55b216437febb395c75bcc8e8289e33", "old_mode": 33188, "old_path": "tcpip/link/sharedmem/sharedmem.go", "new_id": "227dcbc66f552e384fed5043477056f420b3dbfd", "new_mode": 33188, "new_path": "tcpip/link/sharedmem/sharedmem.go" }, { "type": "modify", "old_id": "4901dcab85efa1b161fa53488010b3885ae350a9", "old_mode": 33188, "old_path": "tcpip/link/sniffer/sniffer.go", "new_id": "6a7d56488b32ca69bbfe16b23c65bd6728e2fed9", "new_mode": 33188, "new_path": "tcpip/link/sniffer/sniffer.go" }, { "type": "modify", "old_id": "f9cd94629b81362608502196f7c107055884adc3", "old_mode": 33188, "old_path": "tcpip/link/waitable/waitable.go", "new_id": "ada74d028d126d6012333329c5b70244430a33c2", "new_mode": 33188, "new_path": "tcpip/link/waitable/waitable.go" }, { "type": "modify", "old_id": "0bba93c9a57296cffd21645f14b5974bcdda7b9b", "old_mode": 33188, "old_path": "tcpip/link/waitable/waitable_test.go", "new_id": "7935cb4fe72feec93d1f4a9ea711c45f3d843917", "new_mode": 33188, "new_path": "tcpip/link/waitable/waitable_test.go" }, { "type": "modify", "old_id": "d245583b62702f170c092a405f68eae982e4e13e", "old_mode": 33188, "old_path": "tcpip/network/arp/arp.go", "new_id": "4d239438a3689b8897ae6080b0ca5e79bca5561d", "new_mode": 33188, "new_path": "tcpip/network/arp/arp.go" }, { "type": "modify", "old_id": "4962327b197742abf2060713108c81032c386e8e", "old_mode": 33188, "old_path": "tcpip/network/ip_test.go", "new_id": "bd5be0864db19b74d6ccf13caacfe064663be9ea", "new_mode": 33188, "new_path": "tcpip/network/ip_test.go" }, { "type": "modify", "old_id": "30176c4968243a80490c8a5d5e32f64b361fae6f", "old_mode": 33188, "old_path": "tcpip/network/ipv4/ipv4.go", "new_id": "b781cb6fef2a517a89ff709942f4fd37c6e5769e", "new_mode": 33188, "new_path": "tcpip/network/ipv4/ipv4.go" }, { "type": "modify", "old_id": "10729c8969b29ad64cf3de5a34286b50e4c7a740", "old_mode": 33188, "old_path": "tcpip/network/ipv6/ipv6.go", "new_id": "b0eb6b0e726d2dd52ebae7590965a57112babc64", "new_mode": 33188, "new_path": "tcpip/network/ipv6/ipv6.go" }, { "type": "modify", "old_id": "9870b7b6e2f0f6c0d9a6d87ad1ae7790fd49b3c2", "old_mode": 33188, "old_path": "tcpip/stack/registration.go", "new_id": "5d9adc6182ecd4b64e3ce0b2e9bdba4b96ff50d0", "new_mode": 33188, "new_path": "tcpip/stack/registration.go" }, { "type": "modify", "old_id": "7a3dd68993784f9941735fe0557504aeda9a837b", "old_mode": 33188, "old_path": "tcpip/stack/route.go", "new_id": "d51bde9f75b1169c5cf7985a281194b9cbd82ddd", "new_mode": 33188, "new_path": "tcpip/stack/route.go" }, { "type": "modify", "old_id": "78d56e21482b45f451ac8dcdf4792c457f0af205", "old_mode": 33188, "old_path": "tcpip/stack/stack_test.go", "new_id": "dd710a43b65f1a5d8ed2c1f492816991f5bf85de", "new_mode": 33188, "new_path": "tcpip/stack/stack_test.go" }, { "type": "modify", "old_id": "c3258b212423abcc21ac7ad8996ca482dfa4f319", "old_mode": 33188, "old_path": "tcpip/transport/tcp/connect.go", "new_id": "d4625dd479f5b300801bd3ea88dd10ea0d2fee0f", "new_mode": 33188, "new_path": "tcpip/transport/tcp/connect.go" }, { "type": "modify", "old_id": "ba897be9cd8a5083944ae7e54852dc0d0b9b17de", "old_mode": 33188, "old_path": "tcpip/transport/tcp/endpoint.go", "new_id": "3a4ece4ef31651ae9e397e6cb23811dd7a6f51b2", "new_mode": 33188, "new_path": "tcpip/transport/tcp/endpoint.go" } ] }