Sunil Muthuswamy ac383f58f3 hv_sock: perf: Allow the socket buffer size options to influence the actual socket buffers ... Currently, the hv_sock buffer size is static and can't scale to the bandwidth requirements of the application. This change allows the applications to influence the socket buffer sizes using the SO_SNDBUF and the SO_RCVBUF socket options. Few interesting points to note: 1. Since the VMBUS does not allow a resize operation of the ring size, the socket buffer size option should be set prior to establishing the connection for it to take effect. 2. Setting the socket option comes with the cost of that much memory being reserved/allocated by the kernel, for the lifetime of the connection. Perf data: Total Data Transfer: 1GB Single threaded reader/writer Results below are summarized over 10 iterations. Linux hvsocket writer + Windows hvsocket reader: |---------------------------------------------------------------------------------------------| |Packet size -> | 128B | 1KB | 4KB | 64KB | |---------------------------------------------------------------------------------------------| |SO_SNDBUF size | | Throughput in MB/s (min/max/avg/median): | | v | | |---------------------------------------------------------------------------------------------| | Default | 109/118/114/116 | 636/774/701/700 | 435/507/480/476 | 410/491/462/470 | | 16KB | 110/116/112/111 | 575/705/662/671 | 749/900/854/869 | 592/824/692/676 | | 32KB | 108/120/115/115 | 703/823/767/772 | 718/878/850/866 | 1593/2124/2000/2085 | | 64KB | 108/119/114/114 | 592/732/683/688 | 805/934/903/911 | 1784/1943/1862/1843 | |---------------------------------------------------------------------------------------------| Windows hvsocket writer + Linux hvsocket reader: |---------------------------------------------------------------------------------------------| |Packet size -> | 128B | 1KB | 4KB | 64KB | |---------------------------------------------------------------------------------------------| |SO_RCVBUF size | | Throughput in MB/s (min/max/avg/median): | | v | | |---------------------------------------------------------------------------------------------| | Default | 69/82/75/73 | 313/343/333/336 | 418/477/446/445 | 659/701/676/678 | | 16KB | 69/83/76/77 | 350/401/375/382 | 506/548/517/516 | 602/624/615/615 | | 32KB | 62/83/73/73 | 471/529/496/494 | 830/1046/935/939 | 944/1180/1070/1100 | | 64KB | 64/70/68/69 | 467/533/501/497 | 1260/1590/1430/1431 | 1605/1819/1670/1660 | |---------------------------------------------------------------------------------------------| Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com> Reviewed-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2019-05-22 18:00:14 -07:00
..
af_vsock_tap.c
af_vsock.c	socket: move compat timeout handling into sock.c	2019-02-03 11:17:30 -08:00
diag.c
hyperv_transport.c	hv_sock: perf: Allow the socket buffer size options to influence the actual socket buffers	2019-05-22 18:00:14 -07:00
Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-11-04 09:26:51 +09:00
virtio_transport_common.c	vsock/virtio: free packets during the socket release	2019-05-17 11:46:36 -07:00
virtio_transport.c	vsock/virtio: Initialize core virtio vsock before registering the driver	2019-05-18 10:50:28 -07:00
vmci_transport_notify_qstate.c
vmci_transport_notify.c
vmci_transport_notify.h
vmci_transport.c	vsock: cope with memory allocation failure at socket creation time	2019-02-08 22:32:05 -08:00
vmci_transport.h
vsock_addr.c