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c35ecb95c4
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 script:
Usage: ./bind_bhash.sh [-6 | -4] [-p port] [-a address]
6: use ipv6
4: use ipv4
port: Port number
address: ip address
Without any arguments, ./bind_bhash.sh defaults to ipv6 using ip address
"2001:0db8:0:f101::1" on port 443.
On my local machine, I see:
ipv4:
before - 0.002317 seconds
with bhash2 - 0.000020 seconds
ipv6:
before - 0.002431 seconds
with bhash2 - 0.000021 seconds
Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
66 lines
1.1 KiB
Bash
Executable file
66 lines
1.1 KiB
Bash
Executable file
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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NR_FILES=32768
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SAVED_NR_FILES=$(ulimit -n)
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# default values
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port=443
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addr_v6="2001:0db8:0:f101::1"
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addr_v4="10.8.8.8"
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use_v6=true
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addr=""
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usage() {
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echo "Usage: $0 [-6 | -4] [-p port] [-a address]"
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echo -e "\t6: use ipv6"
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echo -e "\t4: use ipv4"
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echo -e "\tport: Port number"
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echo -e "\taddress: ip address"
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}
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while getopts "ha:p:64" opt; do
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case ${opt} in
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h)
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usage $0
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exit 0
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;;
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a) addr=$OPTARG;;
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p)
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port=$OPTARG;;
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6)
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use_v6=true;;
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4)
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use_v6=false;;
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esac
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done
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setup() {
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if [[ "$use_v6" == true ]]; then
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ip addr add $addr_v6 nodad dev eth0
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else
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ip addr add $addr_v4 dev lo
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fi
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ulimit -n $NR_FILES
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}
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cleanup() {
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if [[ "$use_v6" == true ]]; then
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ip addr del $addr_v6 dev eth0
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else
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ip addr del $addr_v4/32 dev lo
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fi
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ulimit -n $SAVED_NR_FILES
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}
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if [[ "$addr" != "" ]]; then
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addr_v4=$addr;
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addr_v6=$addr;
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fi
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setup
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if [[ "$use_v6" == true ]] ; then
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./bind_bhash $port "ipv6" $addr_v6
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else
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./bind_bhash $port "ipv4" $addr_v4
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fi
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cleanup
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