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author | Eric S. Raymond <esr@thyrsus.com> | 2009-09-29 07:28:38 +0000 |
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committer | Eric S. Raymond <esr@thyrsus.com> | 2009-09-29 07:28:38 +0000 |
commit | 1f80e71eb7980861c12198ce3a3aef15ae5f398a (patch) | |
tree | 910eee2f07946cc2d8be8c8074ae024daf3719b9 /gpsprof.xml | |
parent | 1b547593dff458a8df82c8173762ca62a55a383e (diff) | |
download | gpsd-1f80e71eb7980861c12198ce3a3aef15ae5f398a.tar.gz |
gpsprof is fully working with the new protocol.
All regression test pass. Codebase splints clean.
Diffstat (limited to 'gpsprof.xml')
-rw-r--r-- | gpsprof.xml | 25 |
1 files changed, 5 insertions, 20 deletions
diff --git a/gpsprof.xml b/gpsprof.xml index cef7e276..e95f506e 100644 --- a/gpsprof.xml +++ b/gpsprof.xml @@ -103,20 +103,11 @@ plain text rather than a gnuplot script.)</para> <varlistentry> <term>RS232 time</term> <listitem> -<para>Minimum time required to send the sentence from the GPS to -<application>gpsd</application>. This is computed, not measured, -and may be an underestimate.</para> -</listitem> -</varlistentry> -<varlistentry> -<term>Other line latency</term> -<listitem> -<para>The transmission latency between the GPS and -<application>gpsd</application> not accounted for by RS232 time. -Total line latency (the sum of this bar and RS232 time) -is measured; it begins with the GPS sentence's timestamp and ends with -a timestamp that <application>gpsd</application> generates at -sentence-reading time, before it is decoded.</para> +<para>Time required to send the sentence from the GPS to +<application>gpsd</application>. This measured from the time of +the last zero-length read before the packet to when the packet sniffer +recognizes a complete sentence, so there is a small aountt of +computational overhead mixed in.</para> </listitem> </varlistentry> <varlistentry> @@ -156,12 +147,6 @@ title.</para> a usage message and exit.</para> </refsect1> -<refsect1 id='bugs'><title>BUGS AND LIMITAIONS</title> - -<para>Probably overestimates TCP/IP latency somewhat, as that includes the -Python interpreter's decode time. A C client would be faster.</para> - -</refsect1> <refsect1 id='see_also'><title>SEE ALSO</title> <para> <citerefentry><refentrytitle>gpsd</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |