hashcat Forum

Hi everyone, I'm trying crack hash on 11300(bitcoin/litecoin). When hashcat starts speed shows about 1 kh/s but in while speed drops to around 34 000 H/s. and in the end when about 98% done speed drops to 360 H/s (earlier around 97% was done hashcat write me - Approaching final keyspace - workload adjusted.)

Here is start speed:
Speed.#1.........:  115.2 kH/s (44.90ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#2.........:  116.8 kH/s (44.33ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#3.........:  115.2 kH/s (44.92ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#4.........:  117.4 kH/s (44.25ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#5.........:  116.1 kH/s (44.76ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#6.........:  115.7 kH/s (44.72ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#*.........:  699.2 kH/s


Here is stable speed(about 20 min. after start):

Speed.#1.........:    33459 H/s (46.21ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#2.........:    33976 H/s (45.45ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#3.........:    33546 H/s (46.03ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#4.........:    33631 H/s (45.90ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#5.........:    33272 H/s (46.44ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#6.........:    33235 H/s (46.15ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#*.........:  201.1 kH/s


Hers is speed after 98% done:

Speed.#1.........:      364 H/s (1.76ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#2.........:      365 H/s (1.70ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#3.........:      364 H/s (1.74ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#4.........:      366 H/s (1.70ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#5.........:      366 H/s (1.72ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#6.........:      366 H/s (1.71ms) @ Accel:2048 Loops:256 Thr:256 Vec:1
Speed.#*.........:    2192 H/s


Here is commads for hashcat start:

F:\hashcat\hashcat.exe -w 3 -m 11300 -a 0 F:\hashcat\test_hash2.txt

Maybe someone can help because I'm new in hashcat.

What version of hashcat are you running? There was a bug fixed between 6.2.4 and 6.2.5 that present similar speed issues. Upgrading the latest may fix your problem.

(01-16-2022, 02:39 AM)Chick3nman Wrote: [ -> ]What version of hashcat are you running? There was a bug fixed between 6.2.4 and 6.2.5 that present similar speed issues. Upgrading the latest may fix your problem.

same at 6.2.5

(01-16-2022, 03:58 AM)userresu Wrote: [ -> ]

(01-16-2022, 02:39 AM)Chick3nman Wrote: [ -> ]What version of hashcat are you running? There was a bug fixed between 6.2.4 and 6.2.5 that present similar speed issues. Upgrading the latest may fix your problem.

same at 6.2.5

In version 6.2.5 solved speed lost in last few %. But still don't understand speed loss in the start of process...

Given that you have 6x 3090, I'm guessing these cards are on x1 risers? If so, that could definitely be leading to a degradation in average speeds over time as they cause significant bottlenecking and often increase tx/rx error rates. It's also possible that you are seeing the speeds drop as the cards begin to heat up and their clocks fall.