Thanks Dennis for the follow up.
/dev/urandom is the default (if existing), so if you don't ./configure
--with-devrandom explicitly it should work too.
Well clearly we found the problem and here is some offensive performance
data to reveal the horrible truth :
node000 $ /usr/bin/time -p dd if=/dev/random bs=8192 \
> count=16384 of=dev_random2.dat
0+16384 records in
0+16384 records out
real 2393.45
user 0.21
sys 2391.88
node000 $ /usr/bin/time -p dd if=/dev/urandom bs=8192 \
> count=16384 of=dev_urandom2.dat
0+16384 records in
0+16384 records out
real 5.67
user 0.09
sys 5.57
So there is the proof right there. That was the whole problem.
I may have to recompile httpd-2.4.25 also depending on how apr and
apt-util really interface with httpd and I am curious where I would see
and performance difference.
I am also somewhat curious about the quality difference in entropy from
the /dev/random data vs /dev/urandom and thus I fetched the sources for
"ent" from http://www.fourmilab.ch/random/ and compiled with c99 here
to get this :
node000 $ ./ent -b -c dev_random.dat
Value Char Occurrences Fraction
0 34079262 0.500008
1 34078178 0.499992
Total: 68157440 1.000000
Entropy = 1.000000 bits per bit.
Optimum compression would reduce the size
of this 68157440 bit file by 0 percent.
Chi square distribution for 68157440 samples is 0.02, and randomly
would exceed this value 89.55 percent of the times.
Arithmetic mean value of data bits is 0.5000 (0.5 = random).
Monte Carlo value for Pi is 3.140871554 (error 0.02 percent).
Serial correlation coefficient is 0.000185 (totally uncorrelated = 0.0).
node000 $
node000 $ ./ent -b -c dev_urandom.dat
Value Char Occurrences Fraction
0 34071954 0.499901
1 34085486 0.500099
Total: 68157440 1.000000
Entropy = 1.000000 bits per bit.
Optimum compression would reduce the size
of this 68157440 bit file by 0 percent.
Chi square distribution for 68157440 samples is 2.69, and randomly
would exceed this value 10.12 percent of the times.
Arithmetic mean value of data bits is 0.5001 (0.5 = random).
Monte Carlo value for Pi is 3.142601198 (error 0.03 percent).
Serial correlation coefficient is -0.000063 (totally uncorrelated = 0.0).
node000 $
Essentially no measurable difference for a large number of bits.
Dennis
