<p>try using <code>stratum+tcp://</code> instead of <code>http://</code> protocol.</p>

<p><code>./minerd  --algo scrypt --scantime 33  --url stratum+tcp://[server]:[port] --userpass [username]:[password] --threads 1 --retries -1 -P</code> works pretty well for me right now.</p>

<p>minerd is from <a href="http://optimate.dl.sourceforge.net/project/cpuminer/pooler-cpuminer-2.3.2-linux-x86_64.tar.gz" rel="nofollow">http://optimate.dl.sourceforge.net/project/cpuminer/pooler-cpuminer-2.3.2-linux-x86_64.tar.gz</a></p>

CC BY-SA 3.0
2013-12-16T14:01:05.060Z
What does the `--no-longpoll` flag mean? What is `X-Long-Polling` support?
Rasoul
CC BY-SA 3.0
2014-01-24T17:30:31.540Z
Using bitcoin algo sha256d
    ``minerd -a sha256d -o stratum+tcp://[server]:[port] -O [username]:[password]``
stormwild
CC BY-SA 3.0
2013-11-27T22:36:28.007Z
2013-11-27T22:36:28.007Z
andrej
<p><strong>EDIT:</strong> Looks like you're using minerd (which to my understanding doesn't have stratum support.)  Slush's pool requires it <a href="https://mining.bitcoin.cz/faq/" rel="nofollow">(the FAQ seems to mention this briefly)</a>.</p>

<p>Suggestion: Try using one of the miners listed in the FAQ.</p>

<p>Old post: It looks like new blocks are being generated faster than your machine can complete a single unit of work.</p>

<p><a href="http://pastebin.com/" rel="nofollow">Perhaps you could provide us with a more complete log file?</a></p>

CC BY-SA 3.0
2013-11-27T19:34:09.953Z
Thanks! Pastebin'd log file: http://pastebin.com/nNVJ33YV
Craig Otis
CC BY-SA 3.0
2013-11-27T19:52:39.037Z
@CraigOtis See my updated answer for another (somewhat more informed) idea.
Joshua Shearer
CC BY-SA 3.0
2013-11-27T19:19:41.500Z
2013-11-27T19:52:02.767Z
2013-11-27T19:52:02.767Z
Joshua Shearer
<p>You're using the wrong hash algorithm for Bitcoin mining. Bitcoin uses SHA256d (d = double), but cpuminer (at least the version 2.3.2 on my system) defaults to <strong>scrypt</strong> (for Litecoin) instead:</p>

<pre><code>-a, --algo=ALGO       specify the algorithm to use
                      scrypt    scrypt(1024, 1, 1) (default)
                      sha256d   SHA-256d
</code></pre>

<p>Slush's pool is Bitcoin, so you should add <code>-a sha256d</code> to your command line. You'll see a much higher hash rate (scrypt is intentionally much slower to compute than SHA256) and you'll get <em>yay!!!</em> instead of <em>booooo</em> after some time in your log:</p>

<pre><code>[2013-12-09 21:51:25] thread 0: 49985792 hashes, 832.61 khash/s
[2013-12-09 21:51:29] thread 1: 51072988 hashes, 841.16 khash/s
[2013-12-09 21:52:23] thread 0: 49956628 hashes, 864.18 khash/s
[2013-12-09 21:52:32] thread 1: 50469540 hashes, 808.16 khash/s
[2013-12-09 21:53:26] thread 0: 51850904 hashes, 833.58 khash/s
[2013-12-09 21:53:29] thread 1: 48489516 hashes, 855.40 khash/s
[2013-12-09 21:54:25] thread 1: 46821320 hashes, 834.33 khash/s
[2013-12-09 21:54:25] accepted: 1/1 (100.00%), 1668 khash/s (yay!!!)
[2013-12-09 21:54:25] thread 0: 50014552 hashes, 838.40 khash/s
[2013-12-09 21:54:41] thread 1: 13586032 hashes, 850.75 khash/s
[2013-12-09 21:54:41] accepted: 2/2 (100.00%), 1689 khash/s (yay!!!)
</code></pre>

<p>For best results, you should also use the above mentioned <strong>stratum+tcp</strong> protocol and adjust <code>--threads</code> to the number of cores in the system.</p>

CC BY-SA 3.0
2013-12-09T22:06:24.727Z
2013-12-09T22:06:24.727Z
Ingmar Hupp
<p>I have pretty much no idea what I'm doing. But I've had <code>cpuminer</code> running on my laptop for a half hour or so, just playing around. I <em>know</em> it's not near worth the time or electricity, I'm just having some fun.</p>

<p>I'm using Slush's pool, and ran the program:</p>

<pre><code>./minerd --url http://api.bitcoin.cz:8332 --user &lt;me&gt; --pass &lt;pass&gt; --threads 8
</code></pre>

<p>And I seem to be generating normal output:</p>

<pre><code>[2013-11-27 13:28:05] thread 7: 291732 hashes, 5.18 khash/s
[2013-11-27 13:28:05] accepted: 0/151 (0.00%), 41.48 khash/s (booooo)
[2013-11-27 13:28:08] Stratum detected new block
[2013-11-27 13:28:08] thread 3: 183216 hashes, 5.18 khash/s
[2013-11-27 13:28:08] thread 7: 17988 hashes, 5.28 khash/s
[2013-11-27 13:28:08] thread 1: 38664 hashes, 5.26 khash/s
[2013-11-27 13:28:08] thread 6: 151224 hashes, 5.16 khash/s
[2013-11-27 13:28:08] thread 4: 161664 hashes, 5.18 khash/s
[2013-11-27 13:28:08] thread 2: 79848 hashes, 5.16 khash/s
[2013-11-27 13:28:08] thread 5: 60576 hashes, 5.21 khash/s
[2013-11-27 13:28:08] thread 0: 164808 hashes, 5.17 khash/s
[2013-11-27 13:28:09] thread 3: 5484 hashes, 5.33 khash/s
[2013-11-27 13:28:10] accepted: 0/152 (0.00%), 41.74 khash/s (booooo)
</code></pre>

<p>But I don't know how long it normally takes for my account to begin displaying any kind of progress:</p>

<p><img src="https://i.sstatic.net/5sZvW.png" alt="enter image description here"></p>

<p>My CPU usage is pegged at around 750%, which makes sense - but I'm not sure how I'll know if/when they're contributing to anything.</p>

<mac><cpu-mining><mining-software>
Is this thing on? (How to tell if my cpuminer is working?)
Craig Otis
# Is this thing on? (How to tell if my cpuminer is working?)

(Asked by: username_0 on 2013-11-27)

I have pretty much no idea what I'm doing. But I've had cpuminer running on my laptop for a half hour or so, just playing around. I know it's not near worth the time or electricity, I'm just having some fun.
I'm using Slush's pool, and ran the program:
./minerd --url http://api.bitcoin.cz:8332 --user  --pass  --threads 8

And I seem to be generating normal output:
[2013-11-27 13:28:05] thread 7: 291732 hashes, 5.18 khash/s
[2013-11-27 13:28:05] accepted: 0/151 (0.00%), 41.48 khash/s (booooo)
[2013-11-27 13:28:08] Stratum detected new block
[2013-11-27 13:28:08] thread 3: 183216 hashes, 5.18 khash/s
[2013-11-27 13:28:08] thread 7: 17988 hashes, 5.28 khash/s
[2013-11-27 13:28:08] thread 1: 38664 hashes, 5.26 khash/s
[2013-11-27 13:28:08] thread 6: 151224 hashes, 5.16 khash/s
[2013-11-27 13:28:08] thread 4: 161664 hashes, 5.18 khash/s
[2013-11-27 13:28:08] thread 2: 79848 hashes, 5.16 khash/s
[2013-11-27 13:28:08] thread 5: 60576 hashes, 5.21 khash/s
[2013-11-27 13:28:08] thread 0: 164808 hashes, 5.17 khash/s
[2013-11-27 13:28:09] thread 3: 5484 hashes, 5.33 khash/s
[2013-11-27 13:28:10] accepted: 0/152 (0.00%), 41.74 khash/s (booooo)

But I don't know how long it normally takes for my account to begin displaying any kind of progress:

My CPU usage is pegged at around 750%, which makes sense - but I'm not sure how I'll know if/when they're contributing to anything.

**Tags:** mac, cpu-mining, mining-software


---

## 3 answers

### Answer by username_5 on 2013-12-09. Score: 15 | Accepted answer

You're using the wrong hash algorithm for Bitcoin mining. Bitcoin uses SHA256d (d = double), but cpuminer (at least the version 2.3.2 on my system) defaults to scrypt (for Litecoin) instead:
-a, --algo=ALGO       specify the algorithm to use
                      scrypt    scrypt(1024, 1, 1) (default)
                      sha256d   SHA-256d

Slush's pool is Bitcoin, so you should add -a sha256d to your command line. You'll see a much higher hash rate (scrypt is intentionally much slower to compute than SHA256) and you'll get yay!!! instead of booooo after some time in your log:
[2013-12-09 21:51:25] thread 0: 49985792 hashes, 832.61 khash/s
[2013-12-09 21:51:29] thread 1: 51072988 hashes, 841.16 khash/s
[2013-12-09 21:52:23] thread 0: 49956628 hashes, 864.18 khash/s
[2013-12-09 21:52:32] thread 1: 50469540 hashes, 808.16 khash/s
[2013-12-09 21:53:26] thread 0: 51850904 hashes, 833.58 khash/s
[2013-12-09 21:53:29] thread 1: 48489516 hashes, 855.40 khash/s
[2013-12-09 21:54:25] thread 1: 46821320 hashes, 834.33 khash/s
[2013-12-09 21:54:25] accepted: 1/1 (100.00%), 1668 khash/s (yay!!!)
[2013-12-09 21:54:25] thread 0: 50014552 hashes, 838.40 khash/s
[2013-12-09 21:54:41] thread 1: 13586032 hashes, 850.75 khash/s
[2013-12-09 21:54:41] accepted: 2/2 (100.00%), 1689 khash/s (yay!!!)

For best results, you should also use the above mentioned stratum+tcp protocol and adjust --threads to the number of cores in the system.


---

### Answer by username_1 on 2013-11-27. Score: 3

try using `stratum+tcp://` instead of `http://` protocol.

`./minerd --algo scrypt --scantime 33 --url stratum+tcp://[server]:[port] --userpass [username]:[password] --threads 1 --retries -1 -P` works pretty well for me right now.

minerd is from <http://optimate.dl.sourceforge.net/project/cpuminer/pooler-cpuminer-2.3.2-linux-x86_64.tar.gz>

> **Comments:**
> **username_2**: What does the `--no-longpoll` flag mean? What is `X-Long-Polling` support?  
> **username_3**: Using bitcoin algo sha256d     ``minerd -a sha256d -o stratum+tcp://[server]:[port] -O [username]:[password]``  

---

### Answer by username_4 on 2013-11-27. Score: -1

**EDIT:** Looks like you're using minerd (which to my understanding doesn't have stratum support.) Slush's pool requires it [(the FAQ seems to mention this briefly)](https://mining.bitcoin.cz/faq/).

Suggestion: Try using one of the miners listed in the FAQ.

Old post: It looks like new blocks are being generated faster than your machine can complete a single unit of work.

[Perhaps you could provide us with a more complete log file?](http://pastebin.com/)

> **Comments:**
> **username_0**: Thanks! Pastebin'd log file: http://pastebin.com/nNVJ33YV  
> **username_4**: @CraigOtis See my updated answer for another (somewhat more informed) idea.  

---

