[Git][NTPsec/ntpsec][master] 4 commits: Update TODO list.
Eric S. Raymond
gitlab at mg.gitlab.com
Sun Oct 2 14:01:14 UTC 2016
Eric S. Raymond pushed to branch master at NTPsec / ntpsec
Commits:
673877b6 by Eric S. Raymond at 2016-10-02T09:59:50-04:00
Update TODO list.
- - - - -
fd1420cb by Gary E. Miller at 2016-10-02T10:00:30-04:00
Seriously refactor ntpviz.
Moved evertyhing related to a plot into the plot. Each plot function
now returns it title, percentages, and html descrtipion in addition to
the plot.
This allowed moving the percentage display out of the plot and into
the html. Easier to cut and paste. Does not obscure the plot.
- - - - -
0042c453 by Gary E. Miller at 2016-10-02T10:00:38-04:00
Breakout deviation in histogram html.
- - - - -
dd83224e by Gary E. Miller at 2016-10-02T10:00:50-04:00
Add some dynamic units to the html.
- - - - -
2 changed files:
- devel/TODO
- ntpstats/ntpviz
Changes:
=====================================
devel/TODO
=====================================
--- a/devel/TODO
+++ b/devel/TODO
@@ -18,6 +18,10 @@
on at least one platform and test the NMEA, Atom, and SHM drivers
on most platforms.
+=== Packaging ===
+
+* Package metadata for Debian Ubuntu, Red Hat, and SuSe.
+
== After 1.0 release ==
* Replace ntpq with a Python wrapper around the ntp Python module.
=====================================
ntpstats/ntpviz
=====================================
--- a/ntpstats/ntpviz
+++ b/ntpstats/ntpviz
@@ -160,8 +160,20 @@ plot \
"-" using 1:($2*%(multiplier)s) title "clock offset %(unit)s" with linespoints ls 1, \
"-" using 1:($3*%(multiplier_f)s) title "frequency offset %(unit_f)s" with linespoints ls 2 axis x1y2
""" % locals()
- return plot_template + self.dump("loopstats") + "e\n" \
+
+ exp = """\
+<p>The offsets of the ntpd calculated time and the local system clock.
+Showing frequency offset (red, in parts per million, scale on right) and
+the time offset (blue, in μs, scale on left). These are fields 4 and 3
+from the loopstats log file. Quick changes in time offset will lead to
+larger frequency offsets.</p>
+"""
+
+ ret = {'html' : exp, 'percs' : percs }
+ ret['title'] = "Local Clock Time/Frequency Offsets"
+ ret['plot'] = plot_template + self.dump("loopstats") + "e\n" \
+ self.dump("loopstats")
+ return ret
def local_temps_gnuplot(self):
"Generate GNUPLOT code graphing local temperature statistics"
@@ -174,6 +186,7 @@ plot \
sys.stderr.write("ntpviz: WARNING: no temps to graph\n")
return ''
+ percs = ()
temps_data = ()
plot_data = ""
for key in tempslist:
@@ -182,7 +195,7 @@ plot \
plot_data = plot_data[:-2]
plot_template = NTPViz.Common + """\
-set title "%(sitename)s: Local Temps"
+set title "%(sitename)s: Local Temparatures"
set ytics format "%%1.1f °C" nomirror textcolor rgb '#0060ad'
set style line 1 lc rgb '#0060ad' lt 1 lw 1 pt 7 ps 0 # --- blue
plot \\
@@ -194,8 +207,17 @@ plot \\
# strip the trailing ", \n"
plot_template = plot_template[:-4] + "\n"
- plot_template += plot_data
- return plot_template
+ exp = """\
+<p>Local temperatures. These will be site specific depending on what
+temperature sensors you have and collect data from. Temperature
+changes change the local clock crystal frequency and stability. Crystals
+oscillate faster when warmer. This the single most important
+component of frequency drift.</p>
+"""
+ ret = {'html' : exp, 'percs' : percs }
+ ret['title'] = "Local Temperatures"
+ ret['plot'] = plot_template + plot_data
+ return ret
def local_gps_gnuplot(self):
"Generate GNUPLOT code graphing local gps statistics"
@@ -209,6 +231,7 @@ plot \\
sys.stderr.write("ntpviz: INFO: no gps data to graph\n")
return ''
+ percs = ()
gps_data = ()
plot_data = ""
for key in gpslist:
@@ -234,8 +257,14 @@ plot \\
# strip the trailing ", \\n"
plot_template = plot_template[:-4] + "\n"
- plot_template += plot_data
- return plot_template
+ exp = """\
+<p>Local GPS. These will be site specific. It depends on running
+a local gpsd daemon, and logging the data using gps-log.py.</p>
+"""
+ ret = {'html' : exp, 'percs' : percs }
+ ret['title'] = "Local GPS"
+ ret['plot'] = plot_template + plot_data
+ return ret
def local_error_gnuplot(self):
"Plot the local clock frequency error."
@@ -251,7 +280,7 @@ plot \\
unit = "ppm"
rnd = 3
- percs = self.percentiles( (99, 95, 5, 1), values)
+ percs = self.percentiles( (99, 95, 50, 5, 1), values)
if 1 > percs[99] and -1 < percs[1]:
# go to ppb
@@ -262,6 +291,7 @@ plot \\
percs.update({k: round( v * multiplier, rnd) for k, v in list(percs.items())})
ninetynine = percs[99]
ninetyfive = percs[95]
+ fifty = percs[50]
five = percs[5]
one = percs[1]
@@ -273,12 +303,6 @@ set ytics format "%%1.1f %(unit)s" nomirror
set key bottom right box
set style line 1 lc rgb '#0060ad' lt 1 lw 1 pt 7 ps 0 # --- blue
set style line 2 lc rgb '#dd181f' lt 1 lw 1 pt 5 ps 0 # --- red
-set label 1 "99%% = %(ninetynine)s %(unit)s" at graph 0.01,0.3 left front
-set label 2 "95%% = %(ninetyfive)s %(unit)s" at graph 0.01,0.25 left front
-set label 3 " 5%% = %(five)s %(unit)s" at graph 0.01,0.2 left front
-set label 4 " 1%% = %(one)s %(unit)s" at graph 0.01,0.15 left front
-set label 5 "95%% - 5%% = %(nf_m_f)s %(unit)s" at graph 0.01,0.1 left front
-set label 6 "99%% - 1%% = %(nn_m_o)s %(unit)s" at graph 0.01,0.05 left front
plot \
"-" using 1:($3 * %(multiplier)s) title "local clock error" with linespoints ls 2, \
%(ninetynine)s title "99th percentile", \
@@ -286,7 +310,31 @@ plot \
%(five)s title "5th percentile", \
%(one)s title "1st percentile"
""" % locals()
- return plot_template + self.dump("loopstats")
+
+ exp = """\
+<p>Percentiles: 99%% = %(ninetynine)s %(unit)s,
+ 95%% = %(ninetyfive)s %(unit)s,
+ 50%% = %(fifty)s %(unit)s,
+ 5%% = %(five)s %(unit)s,
+ 1%% = %(one)s %(unit)s<br>
+Ranges: 99%% - 1%% = %(nn_m_o)s %(unit)s,
+ 95%% - 5%% = %(nf_m_f)s %(unit)s</p>
+<p>This shows the frequency offset of the local clock (aka drift).
+It comes from field 3 of the loopstats log file. The graph includes
+percentile data to show how much the frequency changes over a longer
+period of time. The majority of this change should come from
+temperature changes (ex: HVAC, the weather, CPU usage causing local
+heating).</p>
+
+<p>Smaller changes are better. An ideal result would be a horizontal
+line at 0ppm.</p>
+
+<p>Expected values of 99%-1% percentiles: 0.4ppm</p>
+""" % locals()
+ ret = {'html' : exp, 'percs' : percs }
+ ret['title'] = "Local Clock Frequency Offset"
+ ret['plot'] = plot_template + self.dump("loopstats")
+ return ret
def loopstats_gnuplot(self, fld, title, legend, freq):
"Generate GNUPLOT code of a given loopstats field"
@@ -298,15 +346,29 @@ plot \
rnd = 3
if freq:
unit = "ppm"
+ title = "Local Stability"
+ exp = """\
+<p>This shows the frequency jitter (aka wander) of the local clock's
+frequency. In other words, how fast it the local clock changes freqency.
+This is field 6 in the loopstats log file.</p>
+<p>Lower is better. An ideal clock would be a horizontal line at 0ppm.</p>
+"""
else:
unit = "μs"
+ title = "Local Time Jitter"
+ exp = """\
+<p>This shows the jitter of the local clock offset. In other words,
+how fast the local clock offset is changing. This is field 5 in the
+loopstats log file</p>
+<p>Lower is better. An ideal system would be a horizontal line at 0μs.</p>
+"""
sitename = self.sitename
# grab and sort the values, no need for the timestamp, etc.
values = [float(line.split()[fld - 1]) for line in self.loopstats]
values.sort()
- percs = self.percentiles( (99, 95, 5, 1), values)
+ percs = self.percentiles( (99, 95, 50, 5, 1), values)
if 1e-3 <= percs[99] or -1e-3 >= percs[1]:
# go to millisec
@@ -315,6 +377,7 @@ plot \
unit = "ppt"
else:
unit = "ms"
+
elif 1e-6 > percs[99] and -1e-6 < percs[1]:
# go to nanosec, or ppb
multiplier = 1e9
@@ -328,6 +391,7 @@ plot \
for k, v in list(percs.items())})
ninetynine = percs[99]
ninetyfive = percs[95]
+ fifty = percs[50]
five = percs[5]
one = percs[1]
@@ -340,12 +404,6 @@ set ytics format "%%1.1f %(unit)s" nomirror
set key top right box
set style line 1 lc rgb '#0060ad' lt 1 lw 1 pt 7 ps 0 # --- blue
set style line 2 lc rgb '#dd181f' lt 1 lw 1 pt 5 ps 0 # --- red
-set label 1 "99%% = %(ninetynine)s %(unit)s" at graph 0.01,0.95 left front
-set label 2 "95%% = %(ninetyfive)s %(unit)s" at graph 0.01,0.9 left front
-set label 3 " 5%% = %(five)s %(unit)s" at graph 0.01,0.85 left front
-set label 4 " 1%% = %(one)s %(unit)s" at graph 0.01,0.8 left front
-set label 5 "95%% - 5%% = %(nf_m_f)s %(unit)s" at graph 0.01,0.75 left front
-set label 6 "99%% - 1%% = %(nn_m_o)s %(unit)s" at graph 0.01,0.7 left front
plot \
"-" using 1:($%(fld)d*%(multiplier)s) title "%(legend)s" with linespoints ls 1, \
%(ninetynine)s title "99th percentile", \
@@ -353,7 +411,20 @@ plot \
%(five)s title "5th percentile", \
%(one)s title "1st percentile"
""" % locals()
- return plot_template + self.dump("loopstats")
+
+ exp = ( """\
+<p>Percentiles: 99%% = %(ninetynine)s %(unit)s,
+ 95%% = %(ninetyfive)s %(unit)s,
+ 50%% = %(fifty)s %(unit)s,
+ 5%% = %(five)s %(unit)s,
+ 1%% = %(one)s %(unit)s<br>
+Ranges: 99%% - 1%% = %(nn_m_o)s %(unit)s,
+ 95%% - 5%% = %(nf_m_f)s %(unit)s</p>
+""" % locals() ) + exp
+
+ ret = {'html' : exp, 'percs' : percs, 'title' : title }
+ ret['plot'] = plot_template + self.dump("loopstats")
+ return ret
def local_offset_jitter_gnuplot(self):
"Generate GNUPLOT code of local clock loop standard deviation"
@@ -375,7 +446,6 @@ plot \
peerlist.sort() # For stability of output
peer_data = ()
plot_data = ""
- labels = ""
for key in peerlist:
# Trickiness - we allow peerlist elements to be DNS names.
# The socket.gethostbyname() call maps DNS names to IP addresses,
@@ -399,6 +469,7 @@ plot \
multiplier = 1e6
rtt = 0
percentages = ""
+ percs = []
if len(peerlist) == 1:
# only one peer
title += ": "+ peerlist[0]
@@ -431,32 +502,92 @@ plot \
percentages = " %(fifty)s title '50th percentile', " \
% locals()
- labels = """\
-set label 1 "99%% = %(ninetynine)s %(unit)s" at graph 0.01,0.95 left front
-set label 2 "95%% = %(ninetyfive)s %(unit)s" at graph 0.01,0.90 left front
-set label 3 "50%% = %(fifty)s %(unit)s" at graph 0.01,0.85 left front
-set label 4 "5%% = %(five)s %(unit)s" at graph 0.01,0.80 left front
-set label 5 "1%% = %(one)s %(unit)s" at graph 0.01,0.75 left front
-set label 6 "95%% - 5%% = %(nf_m_f)s %(unit)s" at graph 0.01,0.70 left front
-set label 7 "99%% - 1%% = %(nn_m_o)s %(unit)s" at graph 0.01,0.65 left front
+ exp = """\
+<p>Percentiles: 99%% = %(ninetynine)s %(unit)s,
+ 95%% = %(ninetyfive)s %(unit)s,
+ 50%% = %(fifty)s %(unit)s,
+ 5%% = %(five)s %(unit)s,
+ 1%% = %(one)s %(unit)s<br>
+Ranges: 99%% - 1%% = %(nn_m_o)s %(unit)s,
+ 95%% - 5%% = %(nf_m_f)s %(unit)s</p>
""" % locals()
if "offset" == type:
-
+ # doing offset, not jitter
rtt = 1
- # don't do rtt for reclocks
if "127.127." == peerlist[0][:8]:
+ # don't do rtt for reclocks
rtt = 0
+ title = "Refclock Offset " + str(peerlist[0])
+ exp += """\
+<p>This shows the offset of a local refclock in %(unit)s.
+This is field 5 from the loopstats log file. This is be useful to
+see how the measured offset is changing.</p>
+""" % locals()
+ else:
+ title = "Peer Offset " + str(peerlist[0])
+ exp += """\
+<p>This shows the offset of a peer or server in seconds.
+This is field 5 from the loopstats log file. This is be useful to
+see how the measured offset is changing.</p>
+<p>The chart also plots offset±rtt. Where rtt is the round trip time
+to the remote. NTP can not really know the offset of a remote chimer,
+NTP computes it by subtracting rtt/2 from the offset. Plotting the
+offset±rtt reverses this calculation to easier see the effects of
+rtt changes.</p>
+"""
+
+ else:
+ # doing jitter, not offset
+ if "127.127." == peerlist[0][:8]:
+ title = "Refclock Jitter " + str(peerlist[0])
+ exp += """\
+<p>This shows the jitter of a local refclock. Jitter is the
+current estimated dispersion; the variation in offset between samples.
+This is field 8 in the loopstats log file.</p>
+<p>Closer to 0s is better. An ideal system would be a horizontal
+line at 0s.</p>
+"""
+ else:
+ title = "Peer Jitter " + str(peerlist[0])
+ exp += """\
+<p>This shows the jitter of a remote peer or server. Jitter is the
+current estimated dispersion; the variation in offset between samples.
+This is field 8 in the loopstats log file.</p>
+<p>Closer to 0s is better. An ideal system would be a horizontal
+line at 0s.</p>
+"""
+
else:
# many peers
title += "s"
+ if "offset" == type:
+ title = "Peer Offsets"
+ exp = """\
+<p>This shows the offset of all refclocks, peers and servers in %(unit)s.
+This is field 5 from the loopstats log file. This can be useful to
+see if offset changes are happening in a single clock or all clocks
+together.</p>
+<p>Closer to 0s is better. An ideal system would be a horizontal line
+at 0s. Typical 90%% ranges may be: local serial GPS 200 ms; local LAN peer
+80µs; local PPS 20µs. 90%% ranges for WAN servers may be 4ms and much larger.
+</p>
+""" % locals()
+ else:
+ title = "Peer Jitters"
+ exp = """\
+<p>This shows the jitter of all refclocks, peers and servers. Jitter is the
+current estimated dispersion; the variation in offset between samples.
+This is field 8 in the loopstats log file.</p>
+<p>Closer to 0s is better. An ideal system would be a horizontal
+line at 0s.</p>
+"""
plot_template = NTPViz.Common + """\
set title "%(sitename)s: %(title)s"
set ylabel ""
set ytics format "%%1.1f %(unit)s" nomirror
set key top right box
-%(labels)s
plot \
""" % locals()
plot_template += percentages
@@ -475,8 +606,9 @@ plot \
# strip the trailing ", \n"
plot_template = plot_template[:-4] + "\n"
- plot_template += plot_data
- return plot_template
+ ret = {'html' : exp, 'percs' : percs, 'title' : title }
+ ret['plot'] = plot_template + plot_data
+ return ret
def peer_offsets_gnuplot(self, peerlist=None):
return self.peerstats_gnuplot(peerlist, 4, "Peer Clock Offset", "offset")
@@ -497,7 +629,7 @@ plot \
values = [float(line.split()[1]) for line in self.loopstats]
values.sort()
- percs = self.percentiles( (99, 95, 5, 1), values)
+ percs = self.percentiles( (99, 95, 50, 5, 1), values)
unit = "μs"
multiplier = 1e6
@@ -515,9 +647,13 @@ plot \
percs.update({k: round(v*multiplier, rnd) for k, v in list(percs.items())})
ninetynine = percs[99]
ninetyfive = percs[95]
+ fifty = percs[50]
five = percs[5]
one = percs[1]
+ nf_m_f = ninetyfive - five
+ nn_m_o = ninetynine - one
+
cnt = collections.Counter()
for value in values:
# put into buckets
@@ -534,16 +670,12 @@ plot \
m1sigma = values_mean - values_pstd
p1sigma = values_mean + values_pstd
-
-# skip the mean
-#set label 3 "mean = %(values_mean_str)s μs" at graph 0.01,0.3 left front
-
plot_template = '''\
set terminal png size 900,600
set grid
set boxwidth %(boxwidth)s
set xtic rotate by -45 scale 0
-set title "%(sitename)s: Local Clock Time Offset - Histogram"
+set title "%(sitename)s: Local Clock Time Offset Histogram"
set xtics format "%%1.1f %(unit)s" nomirror
set style arrow 1 nohead
set arrow from %(m1sigma)s,graph 0 to %(m1sigma)s,graph 0.90 as 1
@@ -567,18 +699,29 @@ set label 3 "99%%" at %(ninetynine)s, graph 0.35 left front offset -1,-1
set label 4 "95%%" at %(ninetyfive)s, graph 0.50 left front offset -1,-1
set label 5 "1%%" at %(one)s, graph 0.35 left front offset -1,-1
set label 6 "5%%" at %(five)s, graph 0.50 left front offset -1,-1
-set label 10 "1σ = %(values_pstd)s %(unit)s" at graph 0.99,0.95 right front
-set label 11 "99%% = %(ninetynine)s %(unit)s" at graph 0.99,0.90 right front
-set label 12 "95%% = %(ninetyfive)s %(unit)s" at graph 0.99,0.85 right front
-set label 13 "5%% = %(five)s %(unit)s" at graph 0.99,0.80 right front
-set label 14 "1%% = %(one)s %(unit)s" at graph 0.99,0.75 right front
plot \
"-" using ($1 * %(multiplier)s):2 title "histogram" with boxes
''' % locals()
vals = list(cnt.keys())
vals.sort()
histogram_data = ["%s %s\n" % (val, cnt[val]) for val in vals]
- return plot_template + "".join(histogram_data)
+
+ exp = """\
+<p>Percentiles: 99%% = %(ninetynine)s %(unit)s,
+ 95%% = %(ninetyfive)s %(unit)s,
+ 50%% = %(fifty)s %(unit)s,
+ 5%% = %(five)s %(unit)s,
+ 1%% = %(one)s %(unit)s<br>
+Ranges: 99%% - 1%% = %(nn_m_o)s %(unit)s,
+ 95%% - 5%% = %(nf_m_f)s %(unit)s<br>
+Deviation: mean = %(values_mean_str)s %(unit)s,
+1σ = %(values_pstd)s %(unit)s</p>
+<p>This shows the clock offsets of the local clock as a histogram.</p>
+""" % locals()
+ ret = {'html' : exp, 'percs' : percs }
+ ret['title'] = "Local Clock Time Offset Histogram"
+ ret['plot'] = plot_template + "".join(histogram_data)
+ return ret
# Multiplotting can't live inside NTPViz because it consumes a list
# of such objects, not a single one.
@@ -796,9 +939,9 @@ if __name__ == '__main__':
if show_local_offset_histogram:
plot = stats.local_offset_histogram_gnuplot()
if generate:
- gnuplot(plot)
+ gnuplot(plot['plot'])
else:
- sys.stdout.write(plot)
+ sys.stdout.write(plot['plot'])
raise SystemExit(0)
if show_peer_offsets is not None or show_peer_jitters is not None:
@@ -810,9 +953,9 @@ if __name__ == '__main__':
if show_peer_jitters is not None:
plot = stats.peer_jitters_gnuplot(show_peer_jitters)
if generate:
- gnuplot(plot)
+ gnuplot(plot['plot'])
else:
- sys.stdout.write(plot)
+ sys.stdout.write(plot['plot'])
raise SystemExit(0)
if show_temps:
@@ -822,9 +965,9 @@ if __name__ == '__main__':
if show_temps is not None:
plot = stats.local_temps_gnuplot()
if generate:
- gnuplot(plot)
+ gnuplot(plot['plot'])
else:
- sys.stdout.write(plot)
+ sys.stdout.write(plot['plot'])
raise SystemExit(0)
if show_gps:
@@ -833,9 +976,9 @@ if __name__ == '__main__':
raise SystemExit(1)
plot = stats.local_gps_gnuplot()
if generate:
- gnuplot(plot)
+ gnuplot(plot['plot'])
else:
- sys.stdout.write(plot)
+ sys.stdout.write(plot['plot'])
raise SystemExit(0)
if show_local_offset_multiplot:
@@ -867,92 +1010,6 @@ if __name__ == '__main__':
with open( logo_filename, "w" ) as wp:
wp.write(binascii.a2b_base64(ntpsec_logo))
- explanations = {
- "local-offset": """\
-<p>The offsets of the ntpd calculated time and the local system clock.
-Showing frequency offset (red, in parts per million, scale on right) and
-the time offset (blue, in μs, scale on left). These are fields 4 and 3
-from the loopstats log file. Quick changes in time offset will lead to
-larger frequency offsets.</p>
-""",
-
- "local-error": """\
-<p>This shows the frequency offset of the local clock (aka drift).
-It comes from field 3 of the loopstats log file. The graph includes
-percentile data to show how much the frequency changes over a longer
-period of time. The majority of this change should come from
-temperature changes (ex: HVAC, the weather, CPU usage causing local
-heating).</p>
-
-<p>Smaller changes are better. An ideal result would be a horizontal
-line at 0ppm.</p>
-
-<p>Expected values of 99%-1% percentiles: 0.4ppm</p>
-""",
- "local-offset-histogram": """\
-<p>This shows the clock offsets of the local clock as a histogram. It
-includes 1%, 5%, 95%, and 99% percentiles to show the performance of
-the system.</p>
-""",
- "local-stability": """\
-<p>This shows the frequency jitter (aka wander) of the local clock's
-frequency. In other words, how fast it the local clock changes freqency.
-This is field 6 in the loopstats log file.</p>
-<p>Lower is better. An ideal clock would be a horizontal line at 0ppm.</p>
-""",
- "local-gps": """\
-<p>Local GPS. These will be site specific. It depends on running
-a local gpsd daemon, and logging the data using gps-log.py.</p>
-""",
- "local-jitter": """\
-<p>This shows the jitter of the local clock offset. In other words,
-how fast the local clock offset is changing. This is field 5 in the
-loopstats log file</p>
-<p>Lower is better. An ideal system would be a horizontal line at 0μs.</p>
-""",
- "local-temps": """\
-<p>Local temperatures. These will be site specific depending on what
-temperature sensors you have and collect data from. Temperature
-changes change the local clock crystal frequency and stability. Crystals
-oscillate faster when warmer. This the single most important
-component of frequency drift.</p>
-""",
- "peer-jitter": """\
-<p>This shows the jitter of a remote peer or server. Jitter is the
-current estimated dispersion; the variation in offset between samples.
-This is field 8 in the loopstats log file.</p>
-<p>Closer to 0s is better. An ideal system would be a horizontal
-line at 0s.</p>
-""",
- "peer-jitters": """\
-<p>This shows the jitter of all remote peers and servers. Jitter is the
-current estimated dispersion; the variation in offset between samples.
-This is field 8 in the loopstats log file.</p>
-<p>Closer to 0s is better. An ideal system would be a horizontal
-line at 0s.</p>
-""",
- "peer-offset": """\
-<p>This shows the offset of a peer or server in seconds.
-This is field 5 from the loopstats log file. This can be useful to
-see if the measured offset is changing.</p>
-<p>The chart also plots offset±rtt. Where rtt is the round trip time
-to the remote. NTP can not really know the offset of a remote chimer,
-NTP computes it by subtracting rtt/2 from the offset. Plotting the
-offset±rtt reverses this calculation to easier see the effects of
-rtt changes.</p>
-""",
- "peer-offsets": """\
-<p>This shows the offset of all peers and servers in seconds.
-This is field 5 from the loopstats log file. This can be useful to
-see if offset changes are happening in a single clock or all clocks
-together.</p>
-<p>Closer to 0s is better. An ideal system would be a horizontal line
-at 0s. Typical 90% ranges may be: local serial GPS 200 ms; local LAN peer
-80µs; local PPS 20µs. 90% ranges for WAN servers may be 4ms and much larger.
-</p>
-""",
- }
-
start_time = datetime.datetime.utcnow()
start_time_str = start_time.strftime("%c")
@@ -1126,19 +1183,20 @@ ntpviz</a>, part of the <a href="https://www.ntpsec.org/">NTPsec project</a>
for (imagename, image) in imagepairs:
if not image:
continue
+ index_buffer += "<div>\n<h2>%s:</h2>\n" % image['title']
div_name = imagename.replace('-', ' ')
- index_buffer += "<div>\n<h2>%s:</h2>\n" % div_name
+ index_buffer += imagewrapper % \
+ (imagename.replace(':', '%3A'), div_name)
+ if image['html']:
+ index_buffer += "<div>\n%s</div>\n" % image['html']
if 'peer-jitter-' == imagename[:12]:
exp = 'peer-jitter'
elif 'peer-offset-' == imagename[:12]:
exp = 'peer-offset'
else:
exp = imagename
- if exp in explanations:
- index_buffer += "<div>\n%s</div>\n" % explanations[exp]
- gnuplot(image, os.path.join(outdir, imagename + ".png"))
- index_buffer += imagewrapper % \
- (imagename.replace(':', '%3A'), div_name)
+ index_buffer += "<br><br>\n"
+ gnuplot(image['plot'], os.path.join(outdir, imagename + ".png"))
index_buffer += "</div>\n"
# if footer file, add it to index.html
View it on GitLab: https://gitlab.com/NTPsec/ntpsec/compare/2caebf17c42b78f30d01ef5fb9e10427f3c66015...dd83224ef702b8cc5fc31cd9c36112dac136f045
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