argon2 variable runtime, possible bug?
I am running the following argon2 command in my machine (Ubuntu 18.04 with all latest patches installed, Dell 5590, i5-8250U, 16 GB RAM):
time echo -n H0D8ktokFpR1CXnubPWC8tXX0o4YM13gWrxU0FYOD1MChgxlK/CNVgJSql50IQVG82n7u86MEs/HlXsmUv6adQ==
| argon2 7arK1I2rd+ewyzBGgUyUjlMQerVISmo/i57QAq2kyFI= -id -t 4000 -m 14 -p 8 -l 128 -r
I would expect this command takes always roughly same time.
However, every second machine start or so, the command takes more than 1 minute, and around every other second machine start or so, the same command takes around 20 seconds.
CPU/RAM are not used by other time consuming things when I run these tests.
The -id option depends on password.
I verified the behavior is reproducible for same password/salt.
ldd /usr/bin/argon2
linux-vdso.so.1 (0x00007ffcaf133000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f29c1b39000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f29c1748000)
/lib64/ld-linux-x86-64.so.2 (0x00007f29c1f64000)
Any ideas?
linux ubuntu performance time cryptography
edited Dec 28 '18 at 0:04
Scott
15.7k113990
asked Dec 27 '18 at 22:08
guest56789guest56789
11
add a comment |
I am running the following argon2 command in my machine (Ubuntu 18.04 with all latest patches installed, Dell 5590, i5-8250U, 16 GB RAM):
time echo -n H0D8ktokFpR1CXnubPWC8tXX0o4YM13gWrxU0FYOD1MChgxlK/CNVgJSql50IQVG82n7u86MEs/HlXsmUv6adQ==
| argon2 7arK1I2rd+ewyzBGgUyUjlMQerVISmo/i57QAq2kyFI= -id -t 4000 -m 14 -p 8 -l 128 -r
I would expect this command takes always roughly same time.
However, every second machine start or so, the command takes more than 1 minute, and around every other second machine start or so, the same command takes around 20 seconds.
CPU/RAM are not used by other time consuming things when I run these tests.
The -id option depends on password.
I verified the behavior is reproducible for same password/salt.
ldd /usr/bin/argon2
linux-vdso.so.1 (0x00007ffcaf133000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f29c1b39000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f29c1748000)
/lib64/ld-linux-x86-64.so.2 (0x00007f29c1f64000)
Any ideas?
linux ubuntu performance time cryptography
edited Dec 28 '18 at 0:04
Scott
15.7k113990
asked Dec 27 '18 at 22:08
guest56789guest56789
11
add a comment |
I am running the following argon2 command in my machine (Ubuntu 18.04 with all latest patches installed, Dell 5590, i5-8250U, 16 GB RAM):
time echo -n H0D8ktokFpR1CXnubPWC8tXX0o4YM13gWrxU0FYOD1MChgxlK/CNVgJSql50IQVG82n7u86MEs/HlXsmUv6adQ==
| argon2 7arK1I2rd+ewyzBGgUyUjlMQerVISmo/i57QAq2kyFI= -id -t 4000 -m 14 -p 8 -l 128 -r
I would expect this command takes always roughly same time.
However, every second machine start or so, the command takes more than 1 minute, and around every other second machine start or so, the same command takes around 20 seconds.
CPU/RAM are not used by other time consuming things when I run these tests.
The -id option depends on password.
I verified the behavior is reproducible for same password/salt.
ldd /usr/bin/argon2
linux-vdso.so.1 (0x00007ffcaf133000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f29c1b39000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f29c1748000)
/lib64/ld-linux-x86-64.so.2 (0x00007f29c1f64000)
Any ideas?
linux ubuntu performance time cryptography
edited Dec 28 '18 at 0:04
Scott
15.7k113990
asked Dec 27 '18 at 22:08
guest56789guest56789
11
I am running the following argon2 command in my machine (Ubuntu 18.04 with all latest patches installed, Dell 5590, i5-8250U, 16 GB RAM):
time echo -n H0D8ktokFpR1CXnubPWC8tXX0o4YM13gWrxU0FYOD1MChgxlK/CNVgJSql50IQVG82n7u86MEs/HlXsmUv6adQ==
| argon2 7arK1I2rd+ewyzBGgUyUjlMQerVISmo/i57QAq2kyFI= -id -t 4000 -m 14 -p 8 -l 128 -r
I would expect this command takes always roughly same time.
However, every second machine start or so, the command takes more than 1 minute, and around every other second machine start or so, the same command takes around 20 seconds.
CPU/RAM are not used by other time consuming things when I run these tests.
The -id option depends on password.
I verified the behavior is reproducible for same password/salt.
ldd /usr/bin/argon2
linux-vdso.so.1 (0x00007ffcaf133000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f29c1b39000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f29c1748000)
/lib64/ld-linux-x86-64.so.2 (0x00007f29c1f64000)
Any ideas?
linux ubuntu performance time cryptography
linux ubuntu performance time cryptography
edited Dec 28 '18 at 0:04
Scott
15.7k113990
asked Dec 27 '18 at 22:08
guest56789guest56789
11
edited Dec 28 '18 at 0:04
Scott
15.7k113990
asked Dec 27 '18 at 22:08
guest56789guest56789
11
edited Dec 28 '18 at 0:04
Scott
15.7k113990
edited Dec 28 '18 at 0:04
Scott
15.7k113990
edited Dec 28 '18 at 0:04
Scott
15.7k113990
15.7k113990
asked Dec 27 '18 at 22:08
guest56789guest56789
11
asked Dec 27 '18 at 22:08
guest56789guest56789
11
asked Dec 27 '18 at 22:08
guest56789guest56789
11
11
add a comment |
add a comment |
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