current tests

src/staqfq.lua

@@ -47,8 +47,8 @@ MAX_HWQ_BYTES=4500
 -- 24, which is far, far better than 1000.
 -- might need to be larger on gigE+
 
-BIGDISC="pfifo_head_drop limit 12"
-MDISC="pfifo limit 16"
+BIGDISC="pfifo_head_drop limit 24"
+MDISC="pfifo limit 32"
 NORMDISC="pfifo limit 32"
 
 -- You shouldn't need to touch anything after this line

test/cdf.lua

@@ -0,0 +1,36 @@
+-- A cumulative distribution function should be EASY in lua
+-- I was going to try to get gnuplot to do it, but I like it
+-- as data - I can look at the 50% on a large number of plots
+-- and know I'm winning
+
+-- There happens to be a one liner to do this in gnuplot as well
+
+-- via: http://www.christian-rossow.de/articles/Cumulative_Distribution_Function_CDF_With_Gnuplot_And_PostgreSQL.php
+
+SELECT
+    -- x-value: number of cars
+    cars AS x, 
+    -- y-value: percentage of days at most x cars passed the street
+    --   calculated as the number of days with at most x cars devided by
+    --   the total number days in the measurement period
+    COUNT(day) OVER (ORDER BY cars) / 
+       (SELECT COUNT(*) FROM cars_per_day)::real AS y
+FROM cars_per_day
+
+In statistics, CDFs are a common way to describe the probability that a random variable Z with a given probability distribution will be found at a value less than or equal to Z. Have a look at Figure 1. It shows a CDF for how many cars are passing on my street per day. You can read it like this: 35 or fewer cars (x-axis) are passing on my street in approximately 60% (y-axis) of all days.
+
+Now comes the tricky thing. Listing 1 shows how I stored the data in my database. As everyone would do it, I just inserted one row per measurement interval (i.e., a day).
+
+Listing 1: Plain measurement results in table 'cars_per_day'
+
+day     cars
+1          8
+2         25
+3         47
+4         16
+5         25
+6         39
+7          5
+
+
+However, to draw a CDF, gnuplot expects the following format: Given a number of cars Z (x-value), what percentage of days at most Z cars passed on the street? To make this more clear, Listing 2 shows the outcome that gnuplot expects. 

test/gnuplot_examples/gnuplot.org

@@ -0,0 +1,97 @@
+* Logscale
+set logscale y
+plot "silver.dat" t "rate" w errorb, \
+               "" smooth sbezier t "bezier"
+
+
+* multipole data sets
+
+set xrange [1:8]
+#set xdtic
+set title "Convex     November 1-7 1989"
+set key below
+set label "(Weekend)" at 5,25 center
+plot 'using.dat' using 3:4 title "Logged in" with impulses,\
+     'using.dat' using 3:5 t "Load average" with points,\
+     'using.dat' using 3:6 t "%CPU used" with lines
+unset label
+
+# set terminal png transparent nocrop enhanced font arial 8 size 420,320 
+# set output 'using.2.png'
+set key bmargin center horizontal Right noreverse enhanced autotitles box linetype -1 linewidth 1.000
+set title "Convex     November 1-7 1989" 
+set xrange [ 1.00000 : 8.00000 ] noreverse nowriteback
+plot 'using.dat' using 3:4 title "Logged in" with impulses,     'using.dat' using 3:5 t "Load average" with points,     'using.dat' using 3:6 t "%CPU used" with lines
+
+* This gives me my dots
+
+#
+# $Id: random.dem,v 1.12.2.1 2006/10/23 05:43:30 sfeam Exp $
+#
+# random.dem
+#
+# Lattice test for random numbers;
+# If you can see any patterns in this plot, the random number generator
+# is not very good.
+#
+# Copyright (c) 1991, Jos van der Woude, jvdwoude@hut.nl
+
+# History:
+#	-  6. 6. 2006 ds: added univariate and multivariate normal example
+#	- 10. 5. 2006 ds: added univariate and multivariate normal example
+#	-  ?. ?  1991 jvdw: 1st version
+
+unset key
+set xrange [0: 1]
+set yrange [0: 1]
+set zrange [0: 1]
+set title "Lattice test for random numbers"
+set xlabel "rand(n) ->"
+set ylabel "rand(n + 1) ->"
+set zlabel "rand(n + 2) ->"
+set format x "%3.2f"
+set format y "%3.2f"
+set format z "%3.2f"
+set tics
+set sample 1000
+set style function dots
+set parametric
+plot rand(0), rand(0)
+** 
+set terminal png transparent nocrop enhanced font arial 8 size 1000,1000
+set output 'random.1.png'
+set dummy t,y
+set format x "%3.2f"
+set format y "%3.2f"
+set format z "%3.2f"
+unset key
+set parametric
+set samples 1000, 1000
+set style function dots
+set title "Lattice test for random numbers" 
+set xlabel "rand(n) ->" 
+set xrange [ 0.00000 : 1.00000 ] noreverse nowriteback
+set ylabel "rand(n + 1) ->" 
+set yrange [ 0.00000 : 1.00000 ] noreverse nowriteback
+set zlabel "rand(n + 2) ->" 
+set zrange [ 0.00000 : 1.00000 ] noreverse nowriteback
+plot rand(0), rand(0)
+* Colors
+
+set border -1 front linetype -1 linewidth 1.000
+set ticslevel 0
+set xtics border
+set ytics border
+set ztics border
+set xlabel "Red" tc rgb "red"
+set xrange [0:255]
+set ylabel "Green" tc rgb "green"
+set yrange [0:255]
+set zlabel "Blue" tc rgb "blue"
+set zrange [0:255]
+#
+rgb(r,g,b) = int(r)*65536 + int(g)*256 + int(b)
+#
+splot 'rgb_variable.dat' using 1:2:3:(rgb($1,$2,$3)) with points pt 7 ps 4 lc rgb variable, \
+      '' using 1:2:3:(sprintf("0x%x",rgb($1,$2,$3))) with labels left offset 1 notitle
+

test/gnuplot_examples/sin.log

@@ -0,0 +1,175 @@
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+**sin.tex
+(./sin.tex
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+
+Type X to quit or <RETURN> to proceed,
+or enter new name. (Default extension: def)
+
+Enter file name: 
+
+Package inputenc Warning: No characters defined
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+
+)
+
+! LaTeX Error: File `gnuplot-lua-tikz.sty' not found.
+
+Type X to quit or <RETURN> to proceed,
+or enter new name. (Default extension: sty)
+
+Enter file name: 
+
+! LaTeX Error: File `preview.sty' not found.
+
+Type X to quit or <RETURN> to proceed,
+or enter new name. (Default extension: sty)
+
+Enter file name: 
+
+! LaTeX Error: Unknown option `active' for package `preview'.
+
+See the LaTeX manual or LaTeX Companion for explanation.
+Type  H <return>  for immediate help.
+ ...                                              
+
+l.10 \PreviewEnvironment
+                        {tikzpicture}
+? 
+
+! LaTeX Error: Unknown option `tightpage' for package `preview'.
+
+See the LaTeX manual or LaTeX Companion for explanation.
+Type  H <return>  for immediate help.
+ ...                                              
+
+l.10 \PreviewEnvironment
+                        {tikzpicture}
+? \q
+Type <return> to proceed, S to scroll future error messages,
+R to run without stopping, Q to run quietly,
+I to insert something, E to edit your file,
+1 or ... or 9 to ignore the next 1 to 9 tokens of input,
+H for help, X to quit.
+? 
+! Emergency stop.
+ ...                                              
+
+l.10 \PreviewEnvironment
+                        {tikzpicture}
+The option `tightpage' was not declared in package `preview', perhaps you
+misspelled its name. Try typing  <return>  to proceed.
+
+
+Here is how much of TeX's memory you used:
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+ 23i,0n,19p,158b,37s stack positions out of 5000i,500n,10000p,200000b,50000s
+!  ==> Fatal error occurred, no output PDF file produced!