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I updated my second post to reflect the new data that I have gathered. The post immedietely above this indicates that if you do not have the port forward, you are not uploading blocks. Does anyone know if that is correct? If that is actually the case, the estimated 50 megs a day for 8 connections would be considerably less.

- - - - -

After over a week of tracking, I have some additional results. Connections did remain over 100 the entire time.

It could be estimated from this, that approximately 50 Megs per day would be used by a standard client with 8 connections.

To make sure I ONLY was getting bitcoin traffic, I have IPtables rules set up only to allow port 8330-8340 and the non standard port I have specified for my SSH access. Hardware firewall outside of the box only allows the 8000 ports into via NAT.

      day         rx      |     tx      |    total    |   avg. rate
     ------------------------+-------------+-------------+---------------
      07/21/11    103.77 MiB |  528.33 MiB |  632.10 MiB |   59.93 kbit/s
      07/22/11    173.51 MiB |  711.31 MiB |  884.82 MiB |   83.89 kbit/s
      07/23/11    156.95 MiB |  659.00 MiB |  815.94 MiB |   77.36 kbit/s
      07/24/11    166.74 MiB |  803.53 MiB |  970.27 MiB |   92.00 kbit/s
      07/25/11    169.36 MiB |  543.76 MiB |  713.12 MiB |   67.61 kbit/s
      07/26/11    147.99 MiB |    1.19 GiB |    1.33 GiB |  129.35 kbit/s
      07/27/11    169.59 MiB |    0.99 GiB |    1.15 GiB |  112.06 kbit/s
      07/28/11    181.20 MiB |  932.72 MiB |    1.09 GiB |  105.62 kbit/s
      07/29/11    162.22 MiB |  639.65 MiB |  801.88 MiB |   76.03 kbit/s
      07/30/11    152.59 MiB |  592.65 MiB |  745.24 MiB |   70.66 kbit/s
      07/31/11    167.25 MiB |  666.33 MiB |  833.59 MiB |   79.04 kbit/s
      08/01/11    175.02 MiB |  696.06 MiB |  871.08 MiB |   82.59 kbit/s


Notice that there were some high days and some low days. Very interesting information.

After over a week of tracking, I have some additional results. Connections did remain over 100 the entire time.

It could be estimated from this, that approximately 50 Megs per day would be used by a standard client with 8 connections.

To make sure I ONLY was getting bitcoin traffic, I have IPtables rules set up only to allow port 8330-8340 and the non standard port I have specified for my SSH access. Hardware firewall outside of the box only allows the 8000 ports into via NAT.

      day         rx      |     tx      |    total    |   avg. rate
     ------------------------+-------------+-------------+---------------
      07/21/11    103.77 MiB |  528.33 MiB |  632.10 MiB |   59.93 kbit/s
      07/22/11    173.51 MiB |  711.31 MiB |  884.82 MiB |   83.89 kbit/s
      07/23/11    156.95 MiB |  659.00 MiB |  815.94 MiB |   77.36 kbit/s
      07/24/11    166.74 MiB |  803.53 MiB |  970.27 MiB |   92.00 kbit/s
      07/25/11    169.36 MiB |  543.76 MiB |  713.12 MiB |   67.61 kbit/s
      07/26/11    147.99 MiB |    1.19 GiB |    1.33 GiB |  129.35 kbit/s
      07/27/11    169.59 MiB |    0.99 GiB |    1.15 GiB |  112.06 kbit/s
      07/28/11    181.20 MiB |  932.72 MiB |    1.09 GiB |  105.62 kbit/s
      07/29/11    162.22 MiB |  639.65 MiB |  801.88 MiB |   76.03 kbit/s
      07/30/11    152.59 MiB |  592.65 MiB |  745.24 MiB |   70.66 kbit/s
      07/31/11    167.25 MiB |  666.33 MiB |  833.59 MiB |   79.04 kbit/s
      08/01/11    175.02 MiB |  696.06 MiB |  871.08 MiB |   82.59 kbit/s


Notice that there were some high days and some low days. Very interesting information.

I see this question asked a lot on the forums or IRC with the answer typically being "not very much".

I started an ubuntu server nothing on it except for bitcoin and vnstat. I let it run a few days to get some connections reliably built up. I started vnstat today.

In the last 3 hours averaging between 115 and 130 connections, the server has:

Received 28.08 MiB
Transmitted 115.55 MiB

Total: 143.63 Mib


I will run it for a few weeks/months and copy some of its charts into a later post. On this average so far if the trend continues (which it has +-10% for the last three hours) this would be Over a gig of transfer per day for a server with > 100 connections. Over 30 GB a month.

If those numbers hold up for scaling down to 8 connections, this would be around 100 MB per day, 3 GB per month.

I'll have more data for you in a while.

Kokjo you're quite an @$$.

Let's think about this for a minute. He has a VPS. So he doesn't have local access to the machine. So, a teamviewer session would work like this. Mr VPS user logs into SSH into the VPS on his windws/linux desktop. He then allows you to have teamviewer access to his desktop which has the SSH shell. Several other people appeared to understand what he was talking about. And you're the nice person trying to help? Come on.

And Maxim. We aren't talking about mining but I use teamviewer all the time for my remote machines. I am using ubuntu desktop for mining. You need to start teamviewer outside of an RDP protocol, like with a monitor. Set it to run automatically with start up and use a secure password. I have seen a sample from someone else where they were logged into a RDP desktop, started teamviewer and teamviewer logged them into the RDP session. They tried it again with closing out the RDP after opening teamviewer then logging into the machine with teamviewer and it worked just fine. Don't let the graphics controllers get locked into sending their signal to the RDP protocol.

Kokjo if you are really trying to be helpful pull the stick out of the hind end.

Will this work on windows bitcoin client or is this just for linux. I believe the patch is just for linux isn't it for the actual client?

Let me clarify my OP. I know the config.c and how to set the target there. That's the easy one.

Now, open up msg.c and head down to the check_hash function, specifically the return of better_hash. It looks like it is checking a hard coded 40 bits of 0's. Won't I need to change this spot too? What should I change this to based on the 10, 50, 100 scenarios?

Then am I missing any other spots that would also need to be change?

I will pay 1 BTC to someone that tells me which files to edit to change the default work difficulty to say 10 and 50 and 100 in pushpool. I want to set up a pool and can see a couple of places but have no idea what to change it to or if those are all of the spots. Can anyone help me out? I know it has to be really easy. Does anyone that runs a pool have some tips and hints to keep CPU usage low or to limit the amount of get work requests per worker? I was thinking about opening it up to botnets but with a higher difficulty it should still give GPU's an advantage. How stupid of an idea is that? Remember, just an idea. I really want to change the difficulty.

Also, another 1 BTC for someone to provide code to implement pushpool doing a SHA512 hash on the supplied password and modifying the database to have not just a user and password but also a salt field. Sure worker usernames aren't really as secure as say the web interface by why would we not protect those while we are at it too? Is that another dumb idea of mine?

You already have my vote. You're not skipping a version, you're releasing the next beta that is better than the last one.

There already is a 0.2b torrent floating around from the bad version. Can you please increment this to 0.2c to avoid confusion?

I sure didn't read that whole first thing. Most of the comments I've read and seem to possibility go OT or new conversations. I hope you posted that in some other forum where people care <3

My turn-

I've got a couple of rigs hooked up on BTCGuild and have been enjoying bitcoins for a while.

Whole MTgox thing outrages me. My password didn't get hacked, but the hash and salt are floating around out there. Not cool. I hate spam, and want to personally tell everyone that sent me their tradehill link to go fuck themselves. <3

Any questions?

If he mines separately he will not be duplicating anything. Each miner will have unique work if he mines on them solo. However, time to mine a block at the current difficulty he will never see a block.

Now, back to the real question. Mine as a cluster or not, do not. Just hook them each up to a mining pool with a CPU Miner and you are good to go.

There would be no benefit to have them in a cluster instead of just mining separately. And unless your electricity is free a single ATI card will give you much more hashing power at a much lower electricity cost.

That list is 20 minutes to create from the 60,000 accounts. About 600 of them use the basic passwords or dictionary words. wtf... add a number to the end of your word if nothing else... your birth year. Something. I am a big advocate of secure passwords but if people are going to ignore that completely, something better than sexyone needs to be your password.

I took the mtgox list and ran it through some word lists I have and did a basic brute force. Found a bunch that weren't in the leaked lists already.

If you didn't change your password even if you think it was secure, you're still being stupid.

http://pastebin.com/MD3gEQwT