Bitcoin Forum

i have a really weird problem. I have 3 mobo's in my basement, 2 have 1 5830 each and the other has 4 5830's.
They're all Win7 x64 2gb ddr3 ram or higher except the one is a low quality P.O.S. with 2gb ddr2 ram and a via 1.7 cpu lol.
Anyways... my rig with the 4 5830's is causing problems with my internet. I get timeouts every few mins but when I disconnect the rig the internet works flawlessly. Anybody ever experience this or have ideas how to resolve it?

how is your 5830 rig connected to the internet? are those 3 rigs connected to one switch then to a wired/wireless router, or they all connected to the router directly?

Although the actual bandwidth required for mining is minimal, the fact that requests go out simultaneously tends to stress some cheap routers. If you are using cgminer to mine with, try the --net-delay option.

Also check the machine for malware or rootkits. you might something using all your bandwidth.

or simply a bad NIC

What did you mean "every few mins"? it's not a continuous outage, and can recover on its own?

#1 modem w/ wifi from ISP to netgear 16 port switch. the rigs are wired.

#2 i'll add the --net-delay command line, what does it do exactly?

#3 already ran anti-virus and malwarebytes

#4 i can be using the internet just fine, everything loads as it should, then BAM!! timeouts like crazy for a period of time and eventually recovers on it's own

The "modem w/ wifi" from ISP is a modem (DSL?) and router combo which tend to be the aboslute worst.  

Some router's can't handle the high # of connections that mining uses.

Care to look it up in the README (https://github.com/ckolivas/cgminer/blob/master/README)?

modem w/ wifi is a Motorola Surfboard SBG901, cable internet. I even upgraded to the 10mb bandwidth that my isp offered

not really but i'll do it anyway :P

Where do you access Internet from? from the rigs, or another computer. If another computer, is it connected to the same 16 port switch?

When you have Internet time out issue, were all rigs working fine or also timed out?

i access the internet from my desktop and laptop which are both upstairs and connect via wifi.

when i have timeouts all my wifi connected devices experience it and my rigs downstairs have connection problems thru cgminer

to clarify:
1. rigs are wired to the 16 netgear port switch
2. the 16 port switch is wired to the modem
correct?

The problem seems to be with the modem and integrated access point.
what OS are you using for the rigs?

My fault, it's a hub but it comes from modem to hub

Win7 x64

Ok, let's try to clear it up:

1. rigs are wired to a 16 netgear port hub
2. the 16 port hub is wired to the modem
correct?

If you are really using a 16 port hub, you may want to try a switch instead:
   http://www.darron.net/network/secondpage.html

The hub multiples your traffic by 16 times and it can get bad quickly.

Also, next time when the problem happens, you may want to disconnect the other two rigs, and see if you get same result.

well i originally had my internet going from the modem to a netgear wireless router (i disabled the wifi) and was having the same problem. maybe i should go back to it now that i've added the --net-delay command line?

1. hub repeats traffic, it's bad for busy connections, get rid of it if possible.

2. make sure it's really caused by the 4-card rig:  keep it running, turn off the other two, does it help?

3. if not, shut down two miner cards, does it help. This will tell you the problem is really caused by bitcoin traffic or something else in the OS.

With windows 7, you can also monitor the tcp/ip packet sent/received and see if there's anything out of ordinary.

i got rid of the hub and went back to the router. i'll try these steps and report back with updates. thanks for all the help :)

update:
i unplugged the other 2 rigs and left only the 4 card rig connected and still had connection issues.
i unplugged the 4 card rig and plugged in the two 1 card rigs and everything ran smooth.
i plugged all 3 rigs in and removed one card from the 4 card rig and so far everything seems to be running fine

thoughts?

EDIT: I spoke too soon, the 3 card rig ran fine for a few mins then went back to having connection problems

Maybe your 4 card rig is trying to do Windows OS updated?
get a TCP monitor and see what it is trying to do.

I have Windows updates disabled. I'm going to move it to my dad's house tomorrow and monitor it, if it keeps acting strange then I'll start checking the tcp

Wonder if the mystery miner got his botnet by infecting exiting rigs, which is why the network hashrate hasn't been going up.... dun dun dun </tinfoil>

whatever it is, it sounds nasty. Bots, virus, should not completely block other PCs from accessing internet.  I can see two possibilities:

1. It completely took over your gateway (192.168.0.1?) and rendered it inaccessible to other PCs on the network
2. It triggered something on your ISP side and made them block your traffic temporarily.

I moved the rig to my dad's house and it's running great over there. I've had a few timeouts since it's been gone but not nearly as bad.

Since you still have timeouts, then the root cause was not the 4 card rig, it just aggravated the problem. 

Because you already replaced your hub (which doesn't seem to be the problem now), the only suspects left is your SBG901 and ISP; Call you ISP, describe your problem and see if they can tell you something.

I had a tech from my ISP come out and check the sbg901 and he said everything was running fine on it, guess I'll get a replacement from them

For the record, disabling Windows Update is a really, really bad idea.
Multiple critical-level vulnerabilities have been found and patched in every version of Windows.
You opt out from the update cycle, you become a target - your machine might get taken down by an otherwise obsolete exploit.
Don't count on firewalls and AV programs to save your butt when the OS hosting these utilities looks like a sieve.

I still update Windows but I do it when it's convenient, I don't like my rig installing updates and restarting while I'm asleep.

Perhaps this will help you:
regedit -> navigate to (create keys if necessary) HKLM\software\policies\microsoft\windows\windowsUpdate\au -> create a new DWord value named NoAutoRebootWithLoggedOnUsers and set its value to 1

If you really don't like messing with the registry and happen to be using the Professional/Enterprise edition, many configuration settings can be tweaked via the Group Policy Editor (gpedit.msc). More info. (http://blogs.technet.com/b/mu/archive/2008/10/02/windows-update-and-automatic-reboots.aspx)

IMPO, gpedit is one of the greatest benefits of the Professional and higher editions of Windows7, along with a free Windows XP virtual machine (XPMode) and virtual hard drives support.