Date: Sat, 13 Jan 2007 01:12:36 +0100 From: Ivan Voras <ivoras@fer.hr> To: freebsd-performance@freebsd.org Subject: Re: network perf : em driver ? Message-ID: <eo985s$ncb$1@sea.gmane.org> In-Reply-To: <465799.40884.qm@web30312.mail.mud.yahoo.com> References: <eo8a9o$4bm$1@sea.gmane.org> <465799.40884.qm@web30312.mail.mud.yahoo.com>
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R. B. Riddick wrote:
> --- Ivan Voras <ivoras@fer.hr> wrote:
>> I've found iperf to be more useful.
>>
> Soso... Was it slower? Or what?
List of options for tcpblast:
> tcpblast
usage: tcpblast [-4] [-6] destination nblkocks
blocksize: 1024 bytes 0
List of options for iperf:
> iperf --help
Usage: iperf [-s|-c host] [options]
iperf [-h|--help] [-v|--version]
Client/Server:
-f, --format [kmKM] format to report: Kbits, Mbits, KBytes, MBytes=
-i, --interval # seconds between periodic bandwidth reports
-l, --len #[KM] length of buffer to read or write (default 8 K=
B)
-m, --print_mss print TCP maximum segment size (MTU - TCP/IP
header)
-p, --port # server port to listen on/connect to
-u, --udp use UDP rather than TCP
-w, --window #[KM] TCP window size (socket buffer size)
-B, --bind <host> bind to <host>, an interface or multicast addr=
ess
-C, --compatibility for use with older versions does not sent
extra msgs
-M, --mss # set TCP maximum segment size (MTU - 40 bytes)
-N, --nodelay set TCP no delay, disabling Nagle's Algorithm
-V, --IPv6Version Set the domain to IPv6
Server specific:
-s, --server run in server mode
-U, --single_udp run in single threaded UDP mode
-D, --daemon run the server as a daemon
Client specific:
-b, --bandwidth #[KM] for UDP, bandwidth to send at in bits/sec
(default 1 Mbit/sec, implies -u)
-c, --client <host> run in client mode, connecting to <host>
-d, --dualtest Do a bidirectional test simultaneously
-n, --num #[KM] number of bytes to transmit (instead of -t)
-r, --tradeoff Do a bidirectional test individually
-t, --time # time in seconds to transmit for (default 10 se=
cs)
-F, --fileinput <name> input the data to be transmitted from a file
-I, --stdin input the data to be transmitted from stdin
-L, --listenport # port to recieve bidirectional tests back on
-P, --parallel # number of parallel client threads to run
-T, --ttl # time-to-live, for multicast (default 1)
Miscellaneous:
-h, --help print this message and quit
-v, --version print version information and quit
iperf's more useful to me because it can do more and has more tunables.
Some of the more useful ones are twiddling Nagle's algorithm and setting
TCP window size.
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