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Author Topic: NXT :: descendant of Bitcoin - Updated Information  (Read 2752714 times)
omo
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December 24, 2013, 03:18:27 PM
 #6861

@CFB
This version seems really stable, isn't?

I think that now 512MB nodes could work better, without freezing.

I think 512MB nodes could work all the time if we could restart the java process every once in a while. Is there any risk or blockchain corruption by scheduling a cron job to do that? Anyone know? If it is ok to do so, I can write up a guide for people on how to implement it.

my crontab script:
Code:
1 1 * * *  ps -ef|grep java|grep start|awk '{print $2}'|xargs kill -2

BTC:1Fu4TNpVPToxxhSXBNSvE9fz6X3dbYgB8q
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December 24, 2013, 03:19:33 PM
 #6862

Just trying to get some idea of sizing here and what is 'significant' in the world of NXT.  May be impossible to say right now with such crazy fluctuations; but what is a "big fish" in NXT?

I'm used to mining around 2 LTC/day.  If I have 10,000 NXT is that going to forge something worthwhile?  I'm hesitant to dump 1-2 more BTC in until everything stabilizes but I don't want to be a small player.

NXT 15862282579517523866
laowai80
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December 24, 2013, 03:20:16 PM
 #6863

How to choose a VPS host.

I posted digitalocean.com but there are many others. digitalocean.com may not be and is probably not the best one. You need to try others.

Hosting companies, like any other business, operate to be profitable.
Most, if not all, hosting companies oversell their resources, due to thin profit margins.
Many oversell them aggressively, some - ridiculously aggressively.

For a VPS customer this means that rare resources are shared between many VPSs.
NXT software at its present alpha stage requires quite a lot of RAM as it turned out, 512 Mb is a bare minimum under normal conditions for a non-halmarked host. 1 Gb is minimum for a hallmarked host with a relatively small Weight value. Large Weight value nodes require more RAM. If the node is under DDOS, even more RAM is needed. In short, RAM is very important.

VPS technologies allow hosting companies to share resources between many VPSs running on 1 server/hardware unit.

We're particularly concerned about what a hosting company can offer in terms of guaranteed and burstable RAM.
We need the VPS hosting company to offer guaranteed RAM just like advertised on their pricing page. When you choose a VPS hosting company, email them and ask them if the 1 GB they offer on the VPS hosting plan is guaranteed or is it burstable? You need to hear the answer 'guaranteed'. Only this ensures NXT can run safely on this host using all the allocated RAM as advertised.

Example of how VPS technology allows overselling:

We have 1 server with 16 GB RAM.

You can host on it:

16 VPSs with 1 GB guaranteed RAM <- too honest hosting company, probably not profitable for them, doesn't exist in nature Smiley

32 VPSs with 512 MB guaranteed/1 Gb burstable RAM <- most serious and honest companies do this, thin profit margins, they can advertise this as 512 Mb or 1 Gb RAM VPS on their website, but in reality you'd only get 512 Mb most of the time and 1 Gb some of the time if other VPSs don't interfere and the server has free RAM for your sudden burstable usage. Pretty stable hosting environment.

64 VPSs with 256 Mb guaranteed/1 Gb burstable, advertised as 1 Gb on their website. Unstable, too many VPSs interfere with each other, sharing the same limited resources. Too many problems, web scripts generate error messages, etc. That's your $1-2/month VPS host. That's a company to avoid.


How do you know, that a company aggressively oversells?
Well, first of all, read reviews on www.webhostingtalk.com forum, it's the best source of information. Run a search form on that forum for the VPS company you want to find reviews for.
Look at pricing. $10/month per 1 GB VPS  seems reasonable to me. Anything cheaper than that - you can expect various issues. I do encourage everyone to research for different VPS companies and post their reviews, ask their support, especially in terms of whether they allow Java processes to run on the VPSs and if Java is allowed to use all advertised RAM, is the advertised RAM guaranteed or burstable? Ask their support and you want to hear the answer 'guaranteed as advertised'.

You don't want to add hosting instability issues to the NXT software instability issues, you'll get a lot of headache doing that Smiley $10/month is not too much money after all. Don't go for too cheap. If it looks too good to be true, it's most likely not true.
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December 24, 2013, 03:20:46 PM
 #6864

@CFB
This version seems really stable, isn't?

I think that now 512MB nodes could work better, without freezing.

I changed only a few lines of code. It should work as 0.4.0.

Ye but the Ddos protection is making the difference



P.S.
I think the 0.4.2 was a little flop
Cheesy

omo
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December 24, 2013, 03:21:46 PM
 #6865

Just trying to get some idea of sizing here and what is 'significant' in the world of NXT.  May be impossible to say right now with such crazy fluctuations; but what is a "big fish" in NXT?

I'm used to mining around 2 LTC/day.  If I have 10,000 NXT is that going to forge something worthwhile?  I'm hesitant to dump 1-2 more BTC in until everything stabilizes but I don't want to be a small player.

I have about 20k nxt,
mined for about 10 days and got nothing

BTC:1Fu4TNpVPToxxhSXBNSvE9fz6X3dbYgB8q
klee
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December 24, 2013, 03:22:07 PM
 #6866

Just trying to get some idea of sizing here and what is 'significant' in the world of NXT.  May be impossible to say right now with such crazy fluctuations; but what is a "big fish" in NXT?

I'm used to mining around 2 LTC/day.  If I have 10,000 NXT is that going to forge something worthwhile?  I'm hesitant to dump 1-2 more BTC in until everything stabilizes but I don't want to be a small player.
I would think of it like this:

1) I want to buy LTC and/or
2) I want to buy GPUs

How much money would you invest? With NXT you will have both..
laowai80
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December 24, 2013, 03:22:21 PM
 #6867

what, a new version was released? I missed that, running to update everything  Cheesy
davidoski
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December 24, 2013, 03:22:31 PM
 #6868

Quote from: Timetwister

The client is what I see when going to localhost:7875, right? I have tried to delete blocks.nxt and transactions.nxt, and when I open the browser and unlock (creating another address...), most recent block is 23254 and it doesn't update from there.

By the term "client" I meant the program that you run in black window with java -jar command. Just unzip the 0.4.4 version of it in the new folder and run it from there.

Chancellor on brink of second bailout for banks
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December 24, 2013, 03:23:26 PM
 #6869

Cfb or others:

I'd like to run the Nxt server in a remote VPS for forging.  I'm concerned about the security of my passphrase.  My plan is to destroy/recreate the VPS whenever I need to unlock my account in order to minimize the risk.  Can my passphrase be stolen if my VPS is compromised *after* it is unlocked?
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December 24, 2013, 03:26:49 PM
 #6870

I'm frozen here
23888      4747512364439223888      24 Cнeжaнь 2013 18:12:11   
      
      0      0 + 0      0 B   
      
      1      10193357464858782652      863 %   
   
lophie
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December 24, 2013, 03:27:42 PM
 #6871

guys I am always frozen and I keep deleting and restarting with no avail. COMEONE I want to forge for god sake....

Will take me a while to climb up again, But where is a will, there is a way...
mcjavar
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December 24, 2013, 03:28:41 PM
 #6872

guys I am always frozen and I keep deleting and restarting with no avail. COMEONE I want to forge for god sake....

use the new version 0.4.4
masterOfDisaster
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December 24, 2013, 03:29:28 PM
 #6873

Wouldn't it be a perfect test NOT to use downloaded *.nxt files?
Or is it just too risky at the moment?

Not risky but inconvenient. Next time we should just upgrade one by one.

...I just used the *.nxt files from where 0.4.2 got stuck.
0.4.4 continued from there without further intervention. Restarting 0.4.2 could not fix that (I tried that repeatedly)!
Looks like an improvement and 0.4.4 is still up to date on a chain - maybe even the 'right' one Wink
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December 24, 2013, 03:29:43 PM
 #6874

I use a python cript to communicate with the client, checking its status,
whenever I run the script, I got the following messages.
which parameters should I set to make it not response to local requests?

Code:
2013-12-24 22:48:16.042:WARN:oejs.DoSFilter:qtp14109749-79: DOS ALERT: Request delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 22:48:17.390:WARN:oejs.DoSFilter:qtp14109749-78: DOS ALERT: Request delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 22:48:18.920:WARN:oejs.DoSFilter:qtp14109749-80: DOS ALERT: Request delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:06:50.792:WARN:oejs.DoSFilter:qtp14109749-124: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:06:52.540:WARN:oejs.DoSFilter:qtp14109749-124: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:06:54.078:WARN:oejs.DoSFilter:qtp14109749-124: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:07:15.305:WARN:oejs.DoSFilter:qtp14109749-124: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:09:15.310:WARN:oejs.DoSFilter:qtp14109749-125: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:09:39.602:WARN:oejs.DoSFilter:qtp14109749-125: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:11:07.456:WARN:oejs.DoSFilter:qtp14109749-135: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:11:25.750:WARN:oejs.DoSFilter:qtp14109749-138: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:11:39.625:WARN:oejs.DoSFilter:qtp14109749-135: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null
2013-12-24 23:11:51.354:WARN:oejs.DoSFilter:qtp14109749-135: DOS ALERT: Request
delayed=1000ms ip=0:0:0:0:0:0:0:1,session=null,user=null

BTC:1Fu4TNpVPToxxhSXBNSvE9fz6X3dbYgB8q
davidoski
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December 24, 2013, 03:31:41 PM
 #6875

Will the blocks.nxt and transactions.nxt files always get bigger and bigger?

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December 24, 2013, 03:32:27 PM
 #6876


Running smooth  Grin

   
23901      2576421397261863186      24-12-2013 16:29:22   
0      0 + 0      0 B   
1      1651332693446975601      648 %   

pmabdsf
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December 24, 2013, 03:33:05 PM
 #6877

Just trying to get some idea of sizing here and what is 'significant' in the world of NXT.  May be impossible to say right now with such crazy fluctuations; but what is a "big fish" in NXT?

I'm used to mining around 2 LTC/day.  If I have 10,000 NXT is that going to forge something worthwhile?  I'm hesitant to dump 1-2 more BTC in until everything stabilizes but I don't want to be a small player.

I have about 20k nxt,
mined for about 10 days and got nothing

Thanks...I'll consider that.  I spent 20 LTC to get my current 10k nxt; seems expensive but I want to get in early, no doubt..

NXT 15862282579517523866
gbeirn
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December 24, 2013, 03:35:59 PM
 #6878

@CFB
This version seems really stable, isn't?

I think that now 512MB nodes could work better, without freezing.

I think 512MB nodes could work all the time if we could restart the java process every once in a while. Is there any risk or blockchain corruption by scheduling a cron job to do that? Anyone know? If it is ok to do so, I can write up a guide for people on how to implement it.

My little node
  • checks every minute (cron) if nxt is running and restarts it if not
  • hourly restores chain from old nxtfiles.zip and reboots server

It is not forging, but making it working is more important to the network
I wrote about it here


@CFB
This version seems really stable, isn't?

I think that now 512MB nodes could work better, without freezing.

I think 512MB nodes could work all the time if we could restart the java process every once in a while. Is there any risk or blockchain corruption by scheduling a cron job to do that? Anyone know? If it is ok to do so, I can write up a guide for people on how to implement it.

my crontab script:
Code:
1 1 * * *  ps -ef|grep java|grep start|awk '{print $2}'|xargs kill -2




Thanks!

NXT VPS Server Donations can be sent here: 6044921191674841550
At the end of each month I will donate some of them back to the community.
This is separate from my main wallet so you can keep track of them. I will keep them in there and only use them for hosting.
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December 24, 2013, 03:38:03 PM
 #6879

Missclicked, sorry. Was sorted while writting Smiley

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December 24, 2013, 03:38:30 PM
 #6880

Guys, change numberOfConnectedPublicPeers in web.xml from 10 to 100 if u stuck. And try to disabled hallmark protection, this may also help.

Edit: The problem is that default value of numberOfConnectedPublicPeers is small and if none of the connected peers have recent blocks then u won't get them too.
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