# CPU not mining at full speed?

**URL:** <https://forum.zcashcommunity.com/t/cpu-not-mining-at-full-speed/4884>\
**Category:** Mining Support\
**Created:** [October 29, 2016, 9:00am UTC](https://forum.zcashcommunity.com/t/cpu-not-mining-at-full-speed/4884 "2016-10-29T09:00:27Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![xalspaero](https://avatars.discourse-cdn.com/v4/letter/x/e8c25b/32.png) [@xalspaero](https://forum.zcashcommunity.com/u/xalspaero)\
**Post date:** [October 29, 2016, 9:00am UTC](https://forum.zcashcommunity.com/t/cpu-not-mining-at-full-speed/4884/1 "2016-10-29T09:00:27Z")

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I’m getting a very slow rate. When I check the ubuntu system monitor, I notice the CPU usage for zcashd seems to cap at 12%. Is that expected? My CPU is an Intel i7 3770k quad-core and the box has 32GB memory. I’m not running in a VM.

Thank you for running a Zcash node!  
You’re helping to strengthen the network and contributing to a social good 🙂

You are running 1 mining threads.

Since starting this node 21 minutes, 38 seconds ago:

- You have validated 3227 transactions!
- You have contributed **0.0478 Sol/s** on average to the network solution rate.
- You have completed 31 Equihash solver runs.

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**Author:** ![beardog108](https://avatars.discourse-cdn.com/v4/letter/b/b782af/32.png) [@beardog108](https://forum.zcashcommunity.com/u/beardog108)\
**Post date:** [October 29, 2016, 9:42am UTC](https://forum.zcashcommunity.com/t/cpu-not-mining-at-full-speed/4884/2 "2016-10-29T09:42:14Z")

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I think your problem is that you are only on 1 mining thread. Set genproclimit to the maxmium you can. Check with the ‘nproc’ command.

But even if you fix that, you won’t get much.

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**Author:** ![darius](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/darius/32/900_2.png) [@darius](https://forum.zcashcommunity.com/u/darius)\
**Post date:** [October 29, 2016, 12:22pm UTC](https://forum.zcashcommunity.com/t/cpu-not-mining-at-full-speed/4884/3 "2016-10-29T12:22:36Z")

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**update:** Nevermind, I think it was a network problem. I’m getting 7 Sol/s and rising now.

I’m seeing similar behavior: after 20 minutes it’s completed 0 solver runs. This is with genproclimit=8 and equihashsolver=tromp, on a reasonably fast machine (Skylake, DDR4, 8GB). This is my first try at running it, installed on Debian via apt-get following the instructions from the zcash wiki. Am I missing something?

Running zcbenchmark solveequihash did finish, averaging about 1/16 solutions/sec. Should that be faster?

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**Author:** ![xalspaero](https://avatars.discourse-cdn.com/v4/letter/x/e8c25b/32.png) [@xalspaero](https://forum.zcashcommunity.com/u/xalspaero)\
**Post date:** [October 29, 2016, 6:04pm UTC](https://forum.zcashcommunity.com/t/cpu-not-mining-at-full-speed/4884/4 "2016-10-29T18:04:52Z")

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I already have genproclimit=8. nproc gives me 8.