NAME

       Smokeping::probes::FPing - FPing Probe for SmokePing

SYNOPSIS

        *** Probes ***

        +FPing

        binary = /usr/bin/fping # mandatory
        blazemode = true
        hostinterval = 1.5
        mininterval = 0.001
        offset = 50%
        packetsize = 5000
        pings = 20
        sourceaddress = 192.168.0.1
        step = 300
        timeout = 1.5
        tos = 0x20
        usestdout = true

        # [...]

        *** Targets ***

        probe = FPing # if this should be the default probe

        # [...]

        + mytarget
        # probe = FPing # if the default probe is something else
        host = my.host

DESCRIPTION

       Integrates FPing as a probe into smokeping. The variable binary must point to your copy of
       the FPing program.  If it is not installed on your system yet, you can get a slightly
       enhanced version from "pub" in www.smokeping.org.

       The (optional) packetsize option lets you configure the packetsize for the pings sent.

       Since version 3.3 fping sends its statistics to stdout. Set usestdout to 'true' so make
       smokeping read stdout instead of stderr.

       In blazemode, FPing sends one more ping than requested, and discards the first RTT value
       returned as it's likely to be an outlier.

       The FPing manpage has the following to say on this topic:

       Number of bytes of ping data to send.  The minimum size (normally 12) allows room for the
       data that fping needs to do its work (sequence number, timestamp).  The reported received
       data size includes the IP header (normally 20 bytes) and ICMP header (8 bytes), so the
       minimum total size is 40 bytes.  Default is 56, as in ping. Maximum is the theoretical
       maximum IP datagram size (64K), though most systems limit this to a smaller, system-
       dependent number.

VARIABLES

       Supported probe-specific variables:

       binary
           The location of your fping binary.

           Example value: /usr/bin/fping

           This setting is mandatory.

       blazemode
           Send an extra ping and then discarge the first answer since the first is bound to be
           an outliner.

           Example value: true

       hostinterval
           The fping "-p" parameter, but in (possibly fractional) seconds rather than
           milliseconds, for consistency with other Smokeping probes. From fping(1):

           This parameter sets the time that fping  waits between successive packets to an
           individual target.

           Example value: 1.5

       mininterval
           The fping "-i" parameter, but in (probably fractional) seconds rather than
           milliseconds, for consistency with other Smokeping probes. From fping(1):

           The minimum amount of time between sending a ping packet to any target.

           Example value: 0.001

           Default value: 0.01

       offset
           If you run many probes concurrently you may want to prevent them from hitting your
           network all at the same time. Using the probe-specific offset parameter you can change
           the point in time when each probe will be run. Offset is specified in % of total
           interval, or alternatively as 'random', and the offset from the 'General' section is
           used if nothing is specified here. Note that this does NOT influence the rrds itself,
           it is just a matter of when data acqusition is initiated.  (This variable is only
           applicable if the variable 'concurrentprobes' is set in the 'General' section.)

           Example value: 50%

       packetsize
           The ping packet size (in the range of 12-64000 bytes).

           Example value: 5000

       pings
           How many pings should be sent to each target, if different from the global value
           specified in the Database section. Note that the number of pings in the RRD files is
           fixed when they are originally generated, and if you change this parameter afterwards,
           you'll have to delete the old RRD files or somehow convert them.

           Example value: 20

       sourceaddress
           The fping "-S" parameter . From fping(1):

           Set source address.

           Example value: 192.168.0.1

       step
           Duration of the base interval that this probe should use, if different from the one
           specified in the 'Database' section. Note that the step in the RRD files is fixed when
           they are originally generated, and if you change the step parameter afterwards, you'll
           have to delete the old RRD files or somehow convert them. (This variable is only
           applicable if the variable 'concurrentprobes' is set in the 'General' section.)

           Example value: 300

       timeout
           The fping "-t" parameter, but in (possibly fractional) seconds rather than
           milliseconds, for consistency with other Smokeping probes. Note that as Smokeping uses
           the fping 'counting' mode (-C), this apparently only affects the last ping.

           Example value: 1.5

       tos Set the type of service (TOS) of outgoing ICMP packets.  You need at laeast
           fping-2.4b2_to3-ipv6 for this to work. Find a copy on www.smokeping.org/pub.

           Example value: 0x20

       usestdout
           Listen for FPing output on stdout instead of stderr ... (version 3.3+ sends its
           statistics on stdout).

           Example value: true

AUTHORS

       Tobias Oetiker <tobi@oetiker.ch>