linux/tools
Joanne Koong 538aaf9b23 selftests: Add test for timing a bind request to a port with a populated bhash entry
This test populates the bhash table for a given port with
MAX_THREADS * MAX_CONNECTIONS sockets, and then times how long
a bind request on the port takes.

When populating the bhash table, we create the sockets and then bind
the sockets to the same address and port (SO_REUSEADDR and SO_REUSEPORT
are set). When timing how long a bind on the port takes, we bind on a
different address without SO_REUSEPORT set. We do not set SO_REUSEPORT
because we are interested in the case where the bind request does not
go through the tb->fastreuseport path, which is fragile (eg
tb->fastreuseport path does not work if binding with a different uid).

To run the test locally, I did:
* ulimit -n 65535000
* ip addr add 2001:0db8:0:f101::1 dev eth0
* ./bind_bhash_test 443

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-20 18:16:24 -07:00
..
accounting
arch x86/tsx: Disable TSX development mode at boot 2022-04-11 09:58:40 +02:00
bootconfig
bpf bpftool, musl compat: Replace sys/fcntl.h by fcntl.h 2022-04-25 23:24:28 +02:00
build tools build: Filter out options and warnings not supported by clang 2022-04-09 12:34:16 -03:00
cgroup tools/cgroup/slabinfo: update to work with struct slab 2022-02-21 11:34:49 +01:00
counter
debugging
edid
firewire
firmware
gpio
hv
iio Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
include Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-05-19 11:23:59 -07:00
io_uring
kvm/kvm_stat
laptop
leds
lib Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2022-04-27 17:09:32 -07:00
memory-model
objtool - A fix to disable PCI/MSI[-X] masking for XEN_HVM guests as that is 2022-05-01 10:03:36 -07:00
pci
pcmcia
perf perf tests: Fix coresight perf test failure. 2022-05-08 21:48:49 -03:00
power tools/power/x86/intel-speed-select: fix build failure when using -Wl,--as-needed 2022-04-13 13:49:48 +02:00
rcu
scripts Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
spi
testing selftests: Add test for timing a bind request to a port with a populated bhash entry 2022-05-20 18:16:24 -07:00
thermal/tmon
time
tracing Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
usb
virtio tools/virtio: compile with -pthread 2022-03-28 16:52:59 -04:00
vm tools/vm/page_owner_sort.c: remove -c option 2022-04-01 11:46:09 -07:00
wmi
Makefile