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radu_floricica
on Oct 5, 2009
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How not to test that mysqld is alive
If it restarted every few hours and the test executed once a minute, then the bug would appear only once in a hundred executions. It's a good post, I think I could have made the same mistake easily.
axod
on Oct 5, 2009
[–]
It takes me about 10 runs to get a line of output without the grep. Sometimes less. Try it :)
EDIT:
test.sh:
for i in {1..1000} do ps | grep grep | wc -l done
./test.sh | sort | uniq -c
13 0 987 1
Which would indeed suggest 1.3%. Likely dependent on how quickly you're running it, if it's in memory already etc etc
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