Windows iperf3 server
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Measuring the download speed from the server can be done by specifying the flag on the client. Это zip архив с двумя файлами - утилитой и библиотекой. In addition , on the client side you can override the server 's affinity for just that one test, using the n,m form of argument. I have used Editplus for editing the files. Thanks in advence ;. As a result, it is not going to make any kind of changes to the Windows registry, unless you approve them. Smaller values of the pacing timer parameter smooth out the traffic emitted by iperf3 , but potentially at the cost of performance due to more frequent timer processing. При продолжительных тестах, когда нужно оценивать производительность в течении нескольких минут, с помощью опции —i можно указать интервал через который нужно отображать промежуточные результаты.
It can test TCP, UDP, or SCTP throughput. To perform an iperf3 test the user must establish both a server and a client. The iperf3 executable contains both client and server functionality. An iperf3 server can be started using either of the or command-line parameters, for example: iperf3 iperf3 Note that many iperf3 parameters have both short and long forms. In this section we will generally use the short form of command-line flags, unless only the long form of a flag is available. By default, the iperf3 server listens on TCP port 5201 for connections from an iperf3 client. A custom port can be specified by using the flag, for example: iperf3 5002 After the server is started, it will listen for connections from iperf3 clients in other words, the iperf3 program run in client mode. The client mode can be started using the command-line option, which also requires a host to which iperf3 should connect. The host can by specified by hostname, IPv4 literal, or IPv6 literal: iperf3 iperf3. The actual test data is sent over a separate TCP connection, as a separate flow of UDP packets, or as an independent SCTP connection, depending on what protocol was specified by the client. Normally, the test data is sent from the client to the server, and measures the upload speed of the client. Measuring the download speed from the server can be done by specifying the flag on the client. This causes data to be sent from the server to the client. There will be at least one line of output per measurement interval by default a measurement interval lasts for one second, but this can be changed by the option. Each line of output includes at least the time since the start of the test, amount of data transferred during the interval, and the average bitrate over that interval. Note that the values for each measurement interval are taken from the point of view of the endpoint process emitting that output in other words, the output on the client shows the measurement interval data for the client. At the end of the test is a set of statistics that shows at least as much as possible a summary of the test as seen by both the sender and the receiver, with lines tagged accordingly. Recall that by default the client is the sender and the server is the receiver, although as indicated above, use of the flag will reverse these roles. The client can be made to retrieve the server-side output for a given test by specifying the flag. Either the client or the server can produce its output in a JSON structure, useful for integration with other programs, by passing it the flag. Because the contents of the JSON structure are only competely known after the test has finished, no JSON output will be emitted until the end of the test. This feature is used for finding whether or not the storage subsystem is the bottleneck for file transfers. It does not turn iperf3 into a file transfer tool. The length, attributes, and in some cases contents of the received file may not match those of the original file. On both the client and server you can set the local affinity by using the n form of this argument where n is a CPU number. In addition, on the client side you can override the server's affinity for just that one test, using the n,m form of argument. Note that when using this feature, a process will only be bound to a single CPU as opposed to a set containing potentialy multiple CPUs. If the host has multiple interfaces, it will use the first interface by default. Used to avoid buffering when sending output to pipe. Primarily perhaps exclusively of use to developers. The file is a comma separated list of usernames and password hashes; more information on the structure of the file can be found in the section. By default, a test consists of sending data from the client to the server, unless the flag is specified. The default behavior is the operating system's timeout for TCP connection establishment. Providing a shorter value may speed up detection of a down iperf3 server. If there are multiple streams flag , the throughput limit is applied separately to each stream. It will send the given number of packets without pausing, even if that temporarily exceeds the specified throughput limit. Setting the target bitrate to 0 will disable bitrate limits particularly useful for UDP tests. This throughput limit is implemented internally inside iperf3, and is available on all platforms. Compare with the flag. This option replaces the --bandwidth flag, which is now deprecated but at least for now still accepted. The timer fires at the interval set by this parameter. Smaller values of the pacing timer parameter smooth out the traffic emitted by iperf3, but potentially at the cost of performance due to more frequent timer processing. The default is no fair-queueing based pacing. This option is deprecated and will be removed. For TCP tests, the default value is 128KB. In the case of UDP, iperf3 tries to dynamically determine a reasonable sending size based on the path MTU; if that cannot be determined it uses 1460 bytes as a sending size. For SCTP tests, the default size is 64KB. Note that iperf3 is single threaded, so if you are CPU bound, this will not yield higher throughput. The usual prefixes for octal and hex can be used, i. Both numeric and symbolic values are accepted. Numeric values can be specified in decimal, octal and hex see above. The --B flag will be ignored if this flag is specified. Normally SCTP will include the protocol addresses of all active links on the local host when setting up an association. Specifying at least one --X name will disable this behaviour. This flag must be specified for each link to be included in the association, and is supported for both iperf servers and clients the latter are supported by passing the first --X argument to. Hostnames are accepted as arguments and are resolved using. If the --4 or --6 flags are specified, names which do not resolve to addresses within the specified protocol family will be ignored. An older --linux-congestion synonym for this flag is accepted but is deprecated. Get the output from the server. The output format is determined by the server in particular, if the server was invoked with the flag, the output will be in JSON format, otherwise it will be in human-readable format. If the client is run with , the server output is included in a JSON object; otherwise it is appended at the bottom of the human-readable output. The password will be prompted for interactively when the test is run. The public key is used to encrypt the authentication token containing the user credentials, while the private key is used to decrypt the authentication token. A simple plaintext file must be provided to the iperf3 server in order to specify the authorized user credentials. The file is a simple list of comma-separated pairs of a username and a corresponding password hash. The file can also contain commented lines starting with the character.
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