On 01/09/2018 05:11 PM, Tony Finch wrote:
Tom <tomtux...@gmail.com> wrote:
Slip is set to "0" (always drop). After stopping the flood, I'm immediately
able to query the same record (www.example.com) with a positive answer. Does
the "window 5;" or "window 30;" or "window 3600;" possibly has no effect?
The script below works for me. My server is configured with
responses-per-second 2;
slip 0;
The script "floods" at 10 qps for 15 seconds (enough to fill the window),
then drops to 1qps and times how long it takes to recover. At the end it
says the recovery time was 20 seconds. This is a bit more than the window
size because I wasn't completely quiet during the recovery time.
Many thanks for this hint/script. The rate-limit works as explained. My
misunderstanding was, that I didn't set the query-process(es) in the
background.
Kind regards,
Tom
################################################################
#!/bin/sh
set -eu
dig='dig +ignore +tries=1 +timeout=1 +norec dotat.at @grey.dotat.at'
start=$(date +%s)
while [ $(date +%s) -lt $(($start + 15)) ]
do
$dig | grep aa &
sleep 0.1
done
end=$(date +%s)
while ! $dig | grep aa
do
:;
done
echo $(( $(date +%s) - $end ))
################################################################
Tony.
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