# centos 7 sudo yum install libatomic

# ubuntu 20.04 sudo apt install libatomic1

git clone https://github.com/emqx/emqtt-bench.git cd emqtt-bench make

BUILD_WITHOUT_QUIC=1 make

Usage: emqtt_bench conn [--help <help>] [-d <dist>] [-h [<host>]] [-p [<port>]] [-V [<version>]] [-c [<count>]] [-R [<conn_rate>]] [-i [<interval>]] [--ifaddr <ifaddr>] [--prefix <prefix>] [--shortids] [-n [<startnumber>]] [--num-retry-connect [<num_retry_connect>]] [-R [<conn_rate>]] [--reconnect [<reconnect>]] [-S [<ssl>]] [--ssl-version <sslversion>] [--cacertfile <cacertfile>] [--certfile <certfile>] [--keyfile <keyfile>] [--ciphers <ciphers>] [--signature-algs <signature_algs>] [--keyex-algs <keyex_algs>] [--quic [<quic>]] [--ws [<ws>]] [--load-qst <nst_dets_file>] [-u <username>] [-P <password>] [-k [<keepalive>]] [-C [<clean>]] [-x [<expiry>]] [-l <lowmem>] [--force-major-gc-interval [<force_major_gc_interval>]] [-Q [<qoe>]] [--qoelog [<qoelog>]] [--prometheus] [--restapi [<restapi>]] [--log_to [<log_to>]] --help help information -d, --dist enable distribution port -h, --host mqtt server hostname or comma-separated hostnames [default: localhost] -p, --port mqtt server port number [default: 1883] -V, --version mqtt protocol version: 3 | 4 | 5 [default: 5] -c, --count max count of clients [default: 200] -R, --connrate connection rate(/s), default: 0, fallback to use --interval [default: 0] -i, --interval interval of connecting to the broker [default: 10] --ifaddr local ipaddress or interface address --prefix Client ID prefix. If not provided '$HOST_bench_(pub|sub)_$RANDOM_$N' is used, where $HOST is either the host name or the IP address provided in the --ifaddr option, $RANDOM is a random number and $N is the sequence number assigned for each client. If provided, the $RANDOM suffix will not be added. --shortids Use short client ID. If --prefix is provided, the prefix is added otherwise client ID is the assigned sequence number. [default: false] -n, --startnumber The start point when assigning sequence numbers to clients. This is useful when running multiple emqtt-bench instances to test the same broker (cluster), so the start number can be planned to avoid client ID collision [default: 0] --num-retry-connect number of times to retry estabilishing a connection before giving up [default: 0] --reconnect max retries of reconnects. 0: disabled [default: 0] -S, --ssl ssl socket for connecting to server [default: false] --ssl-version enforce tls version and implies ssl is enabled, 'tlsv1.1' | 'tlsv1.2' | 'tlsv1.3' | 'tlsv1.3_nocompat' --cacertfile CA certificate for server verification --certfile client certificate for authentication, if required by server --keyfile client private key for authentication, if required by server --ciphers Cipher suite for ssl/tls connection, comma separated list. e.g. TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256 --signature-algs Signature algorithm for tlsv1.3 connection only, comma separated list. e.g. ecdsa_secp384r1_sha384,ecdsa_secp256r1_sha256 --keyex-algs Key exchange algorithm for tlsv1.3 connection only, comma separated list. e.g. secp384r1,secp256r1 --quic QUIC transport [default: false] --ws websocket transport [default: false] --load-qst load quic session tickets from dets file -u, --username username for connecting to server -P, --password password for connecting to server -k, --keepalive keep alive in seconds [default: 300] -C, --clean clean session [default: true] -x, --session-expiry Set 'Session-Expiry' for persistent sessions (seconds) [default: 0] -l, --lowmem enable low mem mode, but use more CPU --force-major-gc-interval interval in milliseconds in which a major GC will be forced on the bench processes. a value of 0 means disabled (default). this only takes effect when used together with --lowmem. [default: 0] -Q, --qoe set 'true' to enable QoE tracking. set 'dump' to dump QoE disklog to csv then exit [default: false] --qoelog Write QoE event logs to the QoE disklog file for post processing [default: ] --prometheus Enable metrics collection via Prometheus. Usually used with --restapi to enable scraping endpoint. --restapi Enable REST API for monitoring and control. For now only serves /metrics. Can be set to IP:Port to listen on a specific IP and Port, or just Port to listen on all interfaces on that port. [default: disabled] --log_to Control where the log output goes. console: directly to the console null: quietly, don't   output any logs. [default: console]

./emqtt_bench conn -c 50000 -i 10

Usage: emqtt_bench sub [--help <help>] [-d <dist>] [-h [<host>]] [-p [<port>]] [-V [<version>]] [-c [<count>]] [-R [<conn_rate>]] [-i [<interval>]] [--ifaddr <ifaddr>] [--prefix <prefix>] [--shortids] [-n [<startnumber>]] [--num-retry-connect [<num_retry_connect>]] [-R [<conn_rate>]] [--reconnect [<reconnect>]] [-S [<ssl>]] [--ssl-version <sslversion>] [--cacertfile <cacertfile>] [--certfile <certfile>] [--keyfile <keyfile>] [--ciphers <ciphers>] [--signature-algs <signature_algs>] [--keyex-algs <keyex_algs>] [--quic [<quic>]] [--ws [<ws>]] [--load-qst <nst_dets_file>] [-u <username>] [-P <password>] [-k [<keepalive>]] [-C [<clean>]] [-x [<expiry>]] [-l <lowmem>] [--force-major-gc-interval [<force_major_gc_interval>]] [-Q [<qoe>]] [--qoelog [<qoelog>]] [--prometheus] [--restapi [<restapi>]] [--log_to [<log_to>]] [-t <topic>] [--payload-hdrs [<payload_hdrs>]] [-q [<qos>]] --help help information -d, --dist enable distribution port -h, --host mqtt server hostname or comma-separated hostnames [default: localhost] -p, --port mqtt server port number [default: 1883] -V, --version mqtt protocol version: 3 | 4 | 5 [default: 5] -c, --count max count of clients [default: 200] -R, --connrate connection rate(/s), default: 0, fallback to use --interval [default: 0] -i, --interval interval of connecting to the broker [default: 10] --ifaddr local ipaddress or interface address --prefix Client ID prefix. If not provided '$HOST_bench_(pub|sub)_$RANDOM_$N' is used, where $HOST is either the host name or the IP address provided in the --ifaddr option, $RANDOM is a random number and $N is the sequence number assigned for each client. If provided, the $RANDOM suffix will not be added. --shortids Use short client ID. If --prefix is provided, the prefix is added otherwise client ID is the assigned sequence number. [default: false] -n, --startnumber The start point when assigning sequence numbers to clients. This is useful when running multiple emqtt-bench instances to test the same broker (cluster), so the start number can be planned to avoid client ID collision [default: 0] --num-retry-connect number of times to retry estabilishing a connection before giving up [default: 0] --reconnect max retries of reconnects. 0: disabled [default: 0] -S, --ssl ssl socket for connecting to server [default: false] --ssl-version enforce tls version and implies ssl is enabled, 'tlsv1.1' | 'tlsv1.2' | 'tlsv1.3' | 'tlsv1.3_nocompat' --cacertfile CA certificate for server verification --certfile client certificate for authentication, if required by server --keyfile client private key for authentication, if required by server --ciphers Cipher suite for ssl/tls connection, comma separated list. e.g. TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256 --signature-algs Signature algorithm for tlsv1.3 connection only, comma separated list. e.g. ecdsa_secp384r1_sha384,ecdsa_secp256r1_sha256 --keyex-algs Key exchange algorithm for tlsv1.3 connection only, comma separated list. e.g. secp384r1,secp256r1 --quic QUIC transport [default: false] --ws websocket transport [default: false] --load-qst load quic session tickets from dets file -u, --username username for connecting to server -P, --password password for connecting to server -k, --keepalive keep alive in seconds [default: 300] -C, --clean clean session [default: true] -x, --session-expiry Set 'Session-Expiry' for persistent sessions (seconds) [default: 0] -l, --lowmem enable low mem mode, but use more CPU --force-major-gc-interval interval in milliseconds in which a major GC will be forced on the bench processes. a value of 0 means disabled (default). this only takes effect when used together with --lowmem. [default: 0] -Q, --qoe set 'true' to enable QoE tracking. set 'dump' to dump QoE disklog to csv then exit [default: false] --qoelog Write QoE event logs to the QoE disklog file for post processing [default: ] --prometheus Enable metrics collection via Prometheus. Usually used with --restapi to enable scraping endpoint. --restapi Enable REST API for monitoring and control. For now only serves /metrics. Can be set to IP:Port to listen on a specific IP and Port, or just Port to listen on all interfaces on that port. [default: disabled] --log_to Control where the log output goes. console: directly to the console null: quietly, don't   output any logs. [default: console]  -t, --topic topic subscribe, support %u, %c, %i variables  --payload-hdrs Handle the payload header from received message. Publish side must have the same option enabled   in the same order. cnt64: Check the counter is strictly increasing. ts: publish latency   counting, could be used for QoE tracking as well [default: ]  -q, --qos subscribe qos [default: 0]

./emqtt_bench sub -c 50000 -i 10 -t bench/%i -q 2

Usage: emqtt_bench pub [--help <help>] [-d <dist>] [-h [<host>]] [-p [<port>]] [-V [<version>]] [-c [<count>]] [-R [<conn_rate>]] [-i [<interval>]] [--ifaddr <ifaddr>] [--prefix <prefix>] [--shortids] [-n [<startnumber>]] [--num-retry-connect [<num_retry_connect>]] [-R [<conn_rate>]] [--reconnect [<reconnect>]] [-S [<ssl>]] [--ssl-version <sslversion>] [--cacertfile <cacertfile>] [--certfile <certfile>] [--keyfile <keyfile>] [--ciphers <ciphers>] [--signature-algs <signature_algs>] [--keyex-algs <keyex_algs>] [--quic [<quic>]] [--ws [<ws>]] [--load-qst <nst_dets_file>] [-u <username>] [-P <password>] [-k [<keepalive>]] [-C [<clean>]] [-x [<expiry>]] [-l <lowmem>] [--force-major-gc-interval [<force_major_gc_interval>]] [-Q [<qoe>]] [--qoelog [<qoelog>]] [--prometheus] [--restapi [<restapi>]] [--log_to [<log_to>]] [-I [<interval_of_msg>]] [-t <topic>] [--payload-hdrs [<payload_hdrs>]] [-s [<size>]] [-m <message>] [--topics-payload <topics_payload>] [-q [<qos>]] [-r [<retain>]] [-L [<limit>]] [-F [<inflight>]] [-w [<wait_before_publishing>]] [--max-random-wait [<max_random_wait>]] [--min-random-wait [<min_random_wait>]] [--retry-interval [<retry_interval>]] --help help information -d, --dist enable distribution port -h, --host mqtt server hostname or comma-separated hostnames [default: localhost] -p, --port mqtt server port number [default: 1883] -V, --version mqtt protocol version: 3 | 4 | 5 [default: 5] -c, --count max count of clients [default: 200] -R, --connrate connection rate(/s), default: 0, fallback to use --interval [default: 0] -i, --interval interval of connecting to the broker [default: 10] --ifaddr local ipaddress or interface address --prefix Client ID prefix. If not provided '$HOST_bench_(pub|sub)_$RANDOM_$N' is used, where $HOST is either the host name or the IP address provided in the --ifaddr option, $RANDOM is a random number and $N is the sequence number assigned for each client. If provided, the $RANDOM suffix will not be added. --shortids Use short client ID. If --prefix is provided, the prefix is added otherwise client ID is the assigned sequence number. [default: false] -n, --startnumber The start point when assigning sequence numbers to clients. This is useful when running multiple emqtt-bench instances to test the same broker (cluster), so the start number can be planned to avoid client ID collision [default: 0] --num-retry-connect number of times to retry estabilishing a connection before giving up [default: 0] --reconnect max retries of reconnects. 0: disabled [default: 0] -S, --ssl ssl socket for connecting to server [default: false] --ssl-version enforce tls version and implies ssl is enabled, 'tlsv1.1' | 'tlsv1.2' | 'tlsv1.3' | 'tlsv1.3_nocompat' --cacertfile CA certificate for server verification --certfile client certificate for authentication, if required by server --keyfile client private key for authentication, if required by server --ciphers Cipher suite for ssl/tls connection, comma separated list. e.g. TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256 --signature-algs Signature algorithm for tlsv1.3 connection only, comma separated list. e.g. ecdsa_secp384r1_sha384,ecdsa_secp256r1_sha256 --keyex-algs Key exchange algorithm for tlsv1.3 connection only, comma separated list. e.g. secp384r1,secp256r1 --quic QUIC transport [default: false] --ws websocket transport [default: false] --load-qst load quic session tickets from dets file -u, --username username for connecting to server -P, --password password for connecting to server -k, --keepalive keep alive in seconds [default: 300] -C, --clean clean session [default: true] -x, --session-expiry Set 'Session-Expiry' for persistent sessions (seconds) [default: 0] -l, --lowmem enable low mem mode, but use more CPU --force-major-gc-interval interval in milliseconds in which a major GC will be forced on the bench processes. a value of 0 means disabled (default). this only takes effect when used together with --lowmem. [default: 0] -Q, --qoe set 'true' to enable QoE tracking. set 'dump' to dump QoE disklog to csv then exit [default: false] --qoelog Write QoE event logs to the QoE disklog file for post processing [default: ] --prometheus Enable metrics collection via Prometheus. Usually used with --restapi to enable scraping endpoint. --restapi Enable REST API for monitoring and control. For now only serves /metrics. Can be set to IP:Port to listen on a specific IP and Port, or just Port to listen on all interfaces on that port. [default: disabled] --log_to Control where the log output goes. console: directly to the console null: quietly, don't output any logs. [default: console]  -I, --interval_of_msg interval of publishing message(ms) [default: 1000]  -t, --topic topic subscribe, support %u, %c, %i, %s variables  --payload-hdrs If set, add optional payload headers. cnt64: strictly increasing counter(64bit) per   publisher ts: Timestamp when emit example: --payload-hdrs cnt64,ts [default: ]  -s, --size payload size [default: 256]  -m, --message Set the message content for publish. Either a literal message content, or path to a file   with payload template specified via 'template://<file_path>'. Available variables:   %TIMESTAMP%, %TIMESTAMPMS%, %TIMESTAMPUS%, %TIMESTAMPNS%, %UNIQUE%, %RANDOM%. When using   'template://', --size option does not have effect except for when %RANDOM% placeholder is   used.  --topics-payload json file defining topics and payloads  -q, --qos subscribe qos [default: 0]  -r, --retain retain message [default: false]  -L, --limit The max message count to publish, 0 means unlimited [default: 0]  -F, --inflight maximum inflight messages for QoS 1 an 2, value 0 for 'infinity' [default: 1]  -w, --wait-before-publishing wait for all publishers to have (at least tried to) connected before starting publishing   [default: false]  --max-random-wait maximum randomized period in ms that each publisher will wait before starting to publish   (uniform distribution) [default: 0]  --min-random-wait minimum randomized period in ms that each publisher will wait before starting to publish   (uniform distribution) [default: 0]  --retry-interval Publisher's resend interval (in seconds) if the expected acknowledgement for a inflight packet is not received within this interval. Default value 0 means no resend. [default: 0] 

./emqtt_bench pub -c 100 -I 10 -t bench/%i -s 256

./emqtt_bench pub --ifaddr 192.168.1.10 ./emqtt_bench sub --ifaddr 192.168.2.10

./emqtt_bench sub -c 100 -i 10 -t bench/%i -p 8883 --ssl ./emqtt_bench pub -c 100 -I 10 -t bench/%i -p 8883 -s 256 --ssl

./emqtt_bench sub -c 100 -i 10 -t bench/%i -p 8883 --ssl --certfile path/to/client-cert.pem --keyfile path/to/client-key.pem ./emqtt_bench pub -c 100 -i 10 -t bench/%i -s 256 -p 8883 --ssl --certfile path/to/client-cert.pem --keyfile path/to/client-key.pem

ulimit -n 200000 sudo sysctl -w net.ipv4.ip_local_port_range="1025 65534"