"./lzbench -elzlib,0 -j -r -s1000 /dir" freezes on this input

safinaskar commented 4 years ago

Steps to reproduce:

Create a directory, say, /tmp/a (you should have enough free space on that partition)
Unzip this file to that directory: 00000601.ppm.gz under name 1.ppm (this is normal ppm image)
Create 299 more copies of this file (so total number is 300), for example (in bash): cd /tmp/a; for I in {2..300}; do cp 1.ppm $I.ppm; done
Run this: time -p ./lzbench -elzlib,0 -j -r -x /tmp/a
The command will finish in some reasonable time, for my computer this is 47.20 seconds
Now run this: time -p ./lzbench -elzlib,0 -j -r -x -s1000 /tmp/a
The command will not finish in 4 minutes and it seems it will run forever. This is very strange, because, as well as I understand, adding -s1000 should not slow down computation, so, this computation should take no more time than computation without -s1000, i. e. 47.20 seconds

My system is Debian stretch amd64 (with some packages from Debian buster). Linux 4.19.0. GCC 6.3.0. Tests performed on real hardware

inikep commented 4 years ago

safinaskar commented 4 years ago

Thanks. I tested. It works

inikep / lzbench