Jordan Whited d9d9d525d9 wgengine/netstack: increase gVisor's TCP send and receive buffer sizes (#12994) ... This commit increases gVisor's TCP max send (4->6MiB) and receive (4->8MiB) buffer sizes on all platforms except iOS. These values are biased towards higher throughput on high bandwidth-delay product paths. The iperf3 results below demonstrate the effect of this commit between two Linux computers with i5-12400 CPUs. 100ms of RTT latency is introduced via Linux's traffic control network emulator queue discipline. The first set of results are from commit f0230ce prior to TCP buffer resizing. gVisor write direction: Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 180 MBytes 151 Mbits/sec 0 sender [ 5] 0.00-10.10 sec 179 MBytes 149 Mbits/sec receiver gVisor read direction: Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.10 sec 337 MBytes 280 Mbits/sec 20 sender [ 5] 0.00-10.00 sec 323 MBytes 271 Mbits/sec receiver The second set of results are from this commit with increased TCP buffer sizes. gVisor write direction: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 297 MBytes 249 Mbits/sec 0 sender [ 5] 0.00-10.10 sec 297 MBytes 247 Mbits/sec receiver gVisor read direction: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.10 sec 501 MBytes 416 Mbits/sec 17 sender [ 5] 0.00-10.00 sec 485 MBytes 407 Mbits/sec receiver Updates #9707 Updates tailscale/corp#22119 Signed-off-by: Jordan Whited <jordan@tailscale.com>		2024-08-02 15:50:47 -07:00
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link_endpoint_test.go	go.mod,net/tstun,wgengine/netstack: implement gVisor TCP GRO for Linux (#12921)	2024-08-02 10:41:10 -07:00
link_endpoint.go	go.mod,net/tstun,wgengine/netstack: implement gVisor TCP GRO for Linux (#12921)	2024-08-02 10:41:10 -07:00
netstack_linux.go	all: update copyright and license headers	2023-01-27 15:36:29 -08:00
netstack_tcpbuf_default.go	wgengine/netstack: increase gVisor's TCP send and receive buffer sizes (#12994)	2024-08-02 15:50:47 -07:00
netstack_tcpbuf_ios.go	wgengine/netstack: increase gVisor's TCP send and receive buffer sizes (#12994)	2024-08-02 15:50:47 -07:00
netstack_test.go	wgengine/netstack: add test for #12448	2024-06-13 11:46:48 -07:00
netstack_userping_apple.go	various: fix lint warnings	2024-06-06 17:06:54 -04:00
netstack_userping.go	xcode: allow ICMP ping relay on macOS + iOS platforms (#12048)	2024-05-16 11:57:57 -07:00
netstack.go	wgengine/netstack: increase gVisor's TCP send and receive buffer sizes (#12994)	2024-08-02 15:50:47 -07:00