08-06-2025, 01:25 PM
Hello! I am having terrible performance of mode 23800 on 10x RTX 4090.
I am using official binaries of hashcat v7.0.0 from hashcat.net, testing on the default hash from the documentation (https://hashcat.net/wiki/doku.php?id=example_hashes). I used mask attack for benchmarking purposes.
I've recorded the tmux session with hashcat, htop and nvidia-smi for demonstration purposes, where you can see the performance issues.
https://asciinema.org/a/O6tpYodIW9JCB2qUyYrTTTiCz - with default workload profile
https://asciinema.org/a/UzjMUUANhl2EdcMBcRC9BYZn0 - with max possible workload profile (-w 4)
Timestamps for -w 4 demo
0:27 - hashcat launched
0:52 - cracking session started (100% GPU util, low CPU util)
1:01 - GPU util drop, CPU util high. I've noticed a lot of hashcat processes in I/O uninterruptible sleep (D)
13:58 - GPU util increasing, CPU util decreasing, hashcat increases "Progress" stat
14:13 - GPU util drop again.
This patten will repeat itself indefinitely
This problem persists on hashcat v7.0.0. As you can see in demos, the speed per gpu is ~2500 H/s which is abhorrent for RTX 4090
Here is a demo for hashcat v6.2.6. I am using max possible workload profile.
https://asciinema.org/a/nHbAixz1OtkPM8DqaebVYLBjL
On this demo hashrate per device is ~150 kH/s, which is expectable.
I would like to provide additional information on this issue on your demand. Hope this gets fixed. Thank you!
I am using official binaries of hashcat v7.0.0 from hashcat.net, testing on the default hash from the documentation (https://hashcat.net/wiki/doku.php?id=example_hashes). I used mask attack for benchmarking purposes.
I've recorded the tmux session with hashcat, htop and nvidia-smi for demonstration purposes, where you can see the performance issues.
https://asciinema.org/a/O6tpYodIW9JCB2qUyYrTTTiCz - with default workload profile
https://asciinema.org/a/UzjMUUANhl2EdcMBcRC9BYZn0 - with max possible workload profile (-w 4)
Timestamps for -w 4 demo
0:27 - hashcat launched
0:52 - cracking session started (100% GPU util, low CPU util)
1:01 - GPU util drop, CPU util high. I've noticed a lot of hashcat processes in I/O uninterruptible sleep (D)
13:58 - GPU util increasing, CPU util decreasing, hashcat increases "Progress" stat
14:13 - GPU util drop again.
This patten will repeat itself indefinitely
This problem persists on hashcat v7.0.0. As you can see in demos, the speed per gpu is ~2500 H/s which is abhorrent for RTX 4090
Here is a demo for hashcat v6.2.6. I am using max possible workload profile.
https://asciinema.org/a/nHbAixz1OtkPM8DqaebVYLBjL
On this demo hashrate per device is ~150 kH/s, which is expectable.
I would like to provide additional information on this issue on your demand. Hope this gets fixed. Thank you!