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| author |   Joanne Koong <joannelkoong@gmail.com> | 2022-05-19 17:18:34 -0700 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2022-05-20 18:16:24 -0700 |
| commit | 538aaf9b2383701094a47797b4554c6a21c83eed (patch) | |
| tree | 464be1977af3e8290dd0f519c5c3849299b20c3a /tools/testing/selftests/net/.gitignore | |
| parent | net: Add a second bind table hashed by port and address (diff) | |
| download | linux-dev-538aaf9b2383701094a47797b4554c6a21c83eed.tar.xz linux-dev-538aaf9b2383701094a47797b4554c6a21c83eed.zip | |
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>
Diffstat (limited to 'tools/testing/selftests/net/.gitignore')
| -rw-r--r-- | tools/testing/selftests/net/.gitignore | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/.gitignore b/tools/testing/selftests/net/.gitignore index 21a411b04890..735423136bc4 100644 --- a/tools/testing/selftests/net/.gitignore +++ b/tools/testing/selftests/net/.gitignore @@ -36,3 +36,4 @@ gro ioam6_parser toeplitz cmsg_sender +bind_bhash_test |