Granted, I do have an old fashioned hard drive, not an SSD. I'm seriously thinking of upgrading and am wondering whether bumping up my RAM or adding in an SSD would be better off performance wise. Any thoughts there?
If you seldom run several RAM-demanding apps at the same time, I would say you'll be better off with an SSD. Otherwise, considering your current 5 GB of RAM, I would go for the RAM extension. Of course, having both would be the best ;-) If you go for the SSD option, make sure to have your system files (OS) and swap file on it, as it's what makes most of the difference. In other words, keep your hard drive for large data files. Where you will store the block chain depends on your own priorities and the capacity of your SSD; of course, it would be much faster on the SSD (regarding what deepceleron said about fragmentation, timings etc), but the blockchain is getting huge nowadays. |
|
|
|
I suspect someone started downloading the full blockchain off my full node. Unfortunately, the effect was that my computer came to a screeching halt: moving the mouse and the pressing keys on my keyboard had absolutely no effect for several minutes. When I regained use of my computer, I looked in the Task Manager and bitcoin-qt was using the most RAM, and a fair amount of processing power was being used as well. I turned off bitcoin-qt and the problem went away; anecdotally, I'd say that's reason to believe that running the bitcoin-qt client was causing the problem.
So a little bit about my specs, both internet and computer: I'm using an internet connection of 25 Mbps down / 1.5 Mbps up - reasonable download speed (unfortunately I don't live in an area where gigabit internet is available), but not much on the upload front. My computer has 5 GB of RAM, 250 GB of hard drive space, and a 3 Ghz processor speed. The only part of my computer itself that I feel is underpowered is the RAM, I plan on eventually upgrading to 20 GB RAM, but haven't gotten around to it yet.
So here's my question: is there something about the way the bitcoin client is built that causes my computer to freeze up when people start to download the blockchain from me? Or is this just a case of me not having enough upload bandwidth to handle someone downloading a full node from me? I'd love to be able to support the network by running the bitcoin-qt client regularly, but this is starting to happen semi-regularly as bitcoin becomes more popular and I don't feel like my computer is THAT underpowered.
As you noticed yourself about your specs, I would say the problem is the 5 GB of RAM. You don't mention which OS you are using: a 32 bit version of the OS would typically limit user-space RAM to about 3 GB - that's a bit short for modern apps, especially while running a full node. What you described (in bold in my quote) is probably caused by what I call "swapping to death". It's the symptom of the OS running out of memory, and because of this, it is forced to swap memory contents back and forth from/to the hard drive, which is about 3 orders of magnitude slower than RAM. This may cause your machine to become completely unresponsive for several minutes. I always wondered why OS designers wouldn't implement a system warning message whenever the system needs to use the swap file to such an extent that the user experience becomes heavily degraded. Most users don't understand what's happening in the background, and what they can do about it (i.e. add more RAM) |
|
|
|
Seriously?  Don't get me wrong, this is very candid and noble, but you know... Free Market |
|
|
|
It doesn´t neccesarilly mean that the data was leaked from bitmine, it could just be an email spoofing, virus spreading attack.
The headers are real.. it is most likely from bitmine. Someone managed to hack their mail server. I wouldn't say that the *e-mails* containing the virus were from Bitmine. I would rather say that they were from some T-Mobile USA customer through SMTP.com But I would definitely say that the *data* (i.e. addresses, possibly more) were leaked from Bitmine servers in some way. By the way, Bitmine support has just acknowledged the virus by e-mail response to me ("we are investigating") Received: from [172.56.17.187] ([172.56.17.187:15292] helo=172.56.39.143)
by sl-mta06.smtp.com (envelope-from <no-reply@bitmine.ch>)
(ecelerity 3.5.5.39309 r(Platform:3.5.5.0)) with ESMTPA
id 2F/2C-09833-339CCE35; Thu, 14 Aug 2014 14:35:32 +0000
$ whois 172.56.17.187
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# http://www.arin.net/public/whoisinaccuracy/index.xhtml
#
#
# Query terms are ambiguous. The query is assumed to be:
# "n 172.56.17.187"
#
# Use "?" to get help.
#
#
# The following results may also be obtained via:
# http://whois.arin.net/rest/nets;q=172.56.17.187?showDetails=true&showARIN=false&ext=netref2
#
NetRange: 172.32.0.0 - 172.63.255.255
CIDR: 172.32.0.0/11
OriginAS: AS21928
NetName: TMO9
NetHandle: NET-172-32-0-0-1
Parent: NET-172-0-0-0-0
NetType: Direct Allocation
RegDate: 2012-09-18
Updated: 2012-09-18
Ref: http://whois.arin.net/rest/net/NET-172-32-0-0-1
OrgName: T-Mobile USA, Inc.
OrgId: TMOBI
Address: 12920 SE 38th Street
City: Bellevue
StateProv: WA
PostalCode: 98006
Country: US
RegDate: 2003-01-02
Updated: 2012-07-13
Ref: http://whois.arin.net/rest/org/TMOBI
OrgTechHandle: DNSAD11-ARIN
OrgTechName: DNS Administrators
OrgTechPhone: +1-888-662-4662
OrgTechEmail: ARINtechcontact@t-mobile.com
OrgTechRef: http://whois.arin.net/rest/poc/DNSAD11-ARIN
OrgAbuseHandle: DNSAD11-ARIN
OrgAbuseName: DNS Administrators
OrgAbusePhone: +1-888-662-4662
OrgAbuseEmail: ARINtechcontact@t-mobile.com
OrgAbuseRef: http://whois.arin.net/rest/poc/DNSAD11-ARIN
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# http://www.arin.net/public/whoisinaccuracy/index.xhtml
#
Note: the attack *could* have been mitigated by Bitmine if they had implemented strict SPF DNS records on bitmine.ch |
|
|
|
It doesn´t neccesarilly mean that the data was leaked from bitmine, it could just be an email spoofing, virus spreading attack.
Theoretically yes, but Occam's razor says "no". I don't know about others but I find it funny that - I am a customer of Bitmine
- Virus was sent to the e-mail address that I registered with them (not my usual address)
- Virus was sent with the following envelope and header From:
Return-Path: <no-reply@bitmine.ch>
From: "invoice 882" <no-reply@bitmine.ch>
Of course they are spoofed, but the data is very, very, very likely to have leaked from them. This, and several reports from people here in such a tiny timeframe indicates a targeted attack, not a random, widespread one IMO. |
|
|
|
 Yes, the same here. I have received a blank email with the title "Invoice Payment " and a attached file "invoice 882.jar". I'm checking my computer for a virus infection. Don't try open the attached file. Same filename for me. At best it means that "only" customer e-mail addresses have been leaked, but that's just the best case scenario. Those who used a non-unique password for Bitmine should change it wherever they used the same one (hopefully their framework/CMS is hashing and salting passwords wisely but we should assume the worst with them...) As for the Java file, for those who ran it already, expect some nasty shit to hit the fan soon, so sanitize your system ASAP That company is realy bad  Oh yes they are. My my my... (facepalm) |
|
|
|
Did anyone else recive an invoice from bitmine today?
I just got a blank mail with subject: Invoice Payment
and a .jar file witch i don't know what to do with.
... i hope its about my refund..
I just received the virus as well in my inbox. So, Bitmine has been hacked and customer data leaked. Well done. Yay  Sender's IP can be traced back to T-Mobile USA. If I get bored maybe I'll care to dissect the JAR in a fully insulated VM. The funny thing is, when you try to report it to abuse@smtp.com, you get blocked from their mail exchanger with: Diagnostic-Code: smtp; 550 5.7.1 Virus found. So, their ABUSE address is filtering INBOUND messages, while their OUTBOUND servers let them through. Yay |
|
|
|
Food for thought: A god complex is an unshakable belief characterized by consistently inflated feelings of personal ability, privilege, or infallibility. A person with a god complex may refuse to admit the possibility of their error or failure, even in the face of complex or intractable problems or difficult or impossible tasks, or may regard their personal opinions as unquestionably correct. The individual may disregard the rules of society and require special consideration or privileges. |
|
|
|
u will burn the socket by using 3 kw.
No, it will only trip the breaker, unless the electrical wiring/equipment is defective or non-compliant, which is unlikely in a campus dorm. Anyway, I think OP has got it by now, read above. |
|
|
|
I think the thread above is quite confusing (although it contains the answer indeed). Here's the original quote from theymos: The activity number is determined in this way:
time = number of two-week periods in which you've posted since your registration
activity = min(time * 14, posts)
Activity is updated every hour.
|
|
|
|
I would buy a fish tank instead. You clearly don't know what you are getting into
While I don't entirely know what I'm getting into, I'm willing to learn. I've always been interested in mining bitcoin so I might as well give it a try. Your comments are not useful so please do not post on this thread. I'm pretty sure newbies aren't allowed to tell full members what they can and can not do.  Especially when that are 100% correct. No need for these full members to be rude though, especially when the newbie is being quite polite and learning from the answers that were given to him. Telling someone who wants to get into Bitcoin mining to buy a fish tank instead and that he clearly doesn't know what he's getting into, in a thread where he's attempting to know more, isn't useful indeed IMHO. @OP: At any rate, be careful about expecting returns (ROI) from any miner. If you're doing it for the money, it's a risky investment. Do not invest more than you are willing to lose. And as you can see, running the miner 24/7 in your dorm is going to be tough because of the power consumption, the noise and the heat that it will generate. I would consider other options. Cheers |
|
|
|
It most likely won't, i.e. it will trip the circuit breaker.
A typical outlet will be rated 10 amps, that would be about 1100W at 110V (US) or 2200W at 220V (Europe).
What should I do to make this work? Is it even possible? What is the voltage in your area, where do you live? The only possibility that comes to my mind would be having 2 separate 220V circuits in your room, but it seems very unlikely to me. |
|
|
|
|
Survey completed.
No need for the tip though, carry on making something useful for Bitcoin instead ;-)
Cheers
|
|
|
|
|
It most likely won't, i.e. it will trip the circuit breaker.
A typical outlet will be rated 10 amps, that would be about 1100W at 110V (US) or 2200W at 220V (Europe).
|
|
|
|
Everyone around the World pretty much hates their government that aint no secret
No. |
|
|
|
Jon Matonis ( @jonmatonis) is a good start IMO Of course it's no good for Bitcoin Foundation haters, but he's a prominent figure in Bitcoin lobbying, to say the least |
|
|
|
Pour développer ton esprit critique, cadeau. |
|
|
|
what should i do now send the btc or neglect the site.....
Do not send the money: - There is no need for "confirmation" by sending BTC under such circumstances
- This address has received several similar transactions already. A legit verification address would typically be created on a per-user basis
I'm sorry but it looks like you have been scammed  |
|
|
|
Greater fools buy alt-coins (with no added value, e.g. technological improvement)
|
|
|
|
|
Show Posts
