BUMP

Any takers?

Problem solved, thanks everyone!

Hello, I have Ethereum-Wallet-linux64-0-8-7. on Linux Ubuntu 16.
I previously had problem with Bitcoin Core totally freezing the computer which was solved by limiting number of CPU cores/ threads working on it to 1 in bitcoin.conf file (CPU is Pentium N3700, 4 cores).
I have the same problem (total freezing of computer) with Ethereum wallet as well. Is it possible to limit CPU usage of Ethereum Wallet? If yes - where it has to be specified? Thanks.

ok, I have
dbcache=500
par=1

Now it adds new blocks slower of course, but hopefully it won't the freeze the computer anymore.
Can you tell what does dbcache=500 exactly do?


Thanks a lot!

Here is screen photo from latest freeze with HTOP data (sorry, bad quality):
http://imgur.com/a/TIBfq 

Looks like all 4 cores are almost fully used.

I did this but it froze again after about 20 mins.
Maybe there are bad blocks on HDD? Computer is new so I thought that was unlikely.

Bitcoin Core just froze Ubuntu again, it had been running for about an hour, more often it happens after 15-20 minutes. I was able to download blockchain until 1 year 40 weeks were left, then this problem started.

I can't find bitcoin.conf, it should be in /home/username/.bitcoin/bitcoin.conf , but it is not there.

UPDATE:
This is Bitcoin-Qt.conf file from /home/username/.config/Bitcoin :

[General]
addrProxy=127.0.0.1:9050
addrSeparateProxyTor=127.0.0.1:9050
bSpendZeroConfChange=true
fCoinControlFeatures=false
fFeeSectionMinimized=true
fHideTrayIcon=false
fListen=true
fMinimizeOnClose=false
fMinimizeToTray=false
fPayOnlyMinFee=false
fReset=false
fRestartRequired=false
fSendFreeTransactions=false
fUseProxy=false
fUseSeparateProxyTor=false
fUseUPnP=false
language=
nCustomFeeRadio=0
nDatabaseCache=300
nDisplayUnit=0
nFeeRadio=0
nRPCConsoleWindowPos=@Point(284 -4)
nRPCConsoleWindowSize=@Size(740 460)
nSettingsVersion=130100
nSmartFeeSliderPosition=0
nThreadsScriptVerif=0
nTransactionFee=0
nWindowPos=@Point(288 -4)
nWindowSize=@Size(850 550)
strDataDir=/home/l5/.bitcoin
strThirdPartyTxUrls=


This is HTOP:
http://imgur.com/a/WYHGX

Thanks for the answer.
With free -m I get this:
                    total        used        free      shared  buff/cache   available
Mem:           3850        1799         275          93        1775        1679
Swap:          3995         188        3807

Does that mean almost all memory is used? Only 275 MB free.

"maybe you will need to give bitcoin process lower priority and disable memory cache  so that it doesn't crash the whole system"
How do I do that?

This is screenshot from iotop:
http://imgur.com/a/rn2TO

Now Bitcoin Core totally freezes Ubuntu after downloading 3-5 days' worth of data.
It is actually downloading blocks quite rapidly until it freezes.
CPU usage for bitcoin-qt while it is working is more than 300% most of the time according to "top" (Pentium N3700 has 4 cores).

Thanks for trying to help.

This is the result of fdisk -l /dev/sda:

Disk /dev/sda: 465,8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: A7869A7B-98F5-4207-BCCF-11ADFC917D47

Device       Start       End   Sectors   Size Type
/dev/sda1     2048   1050623   1048576   512M EFI System
/dev/sda2  1050624   2050047    999424   488M Linux filesystem
/dev/sda3  2050048 976771071 974721024 464,8G Linux filesystem


df -h:

Filesystem                   Size  Used Avail Use% Mounted on
udev                         1,9G     0  1,9G   0% /dev
tmpfs                        386M  6,3M  379M   2% /run
/dev/mapper/ubuntu--vg-root  454G   69G  363G  16% /
tmpfs                        1,9G  224K  1,9G   1% /dev/shm
tmpfs                        5,0M  4,0K  5,0M   1% /run/lock
tmpfs                        1,9G     0  1,9G   0% /sys/fs/cgroup
/dev/sda2                    473M  115M  334M  26% /boot
/dev/sda1                    511M  3,6M  508M   1% /boot/efi
tmpfs                        386M   56K  385M   1% /run/user/1000


find / -name ".bitcoin" -type d
results in
find: ‘/run/user/1000/gvfs’: Permission denied

Here is debug.log: https://paste.ee/p/hu1JF

When I try to view debug.log I get this:
There was a problem opening the file “/home/l5/.bitcoin/debug.log”. The file you opened has some invalid characters. If you continue editing this file you could corrupt this document.
You can also choose another character encoding and try again.

Retry Edit anyway Cancel

What should I do?

And there is lot of text - should I just copy/paste it here?

It looks like the problem is not due to overheating after all because now it occurs after relatively short period of time and laptop doesn't feel that hot.

Thanks for the answer. I don't have anything else on that laptop so I have almost 500 GB free space on hard disk.
Now I think that freeze could have been due to overheating.
But two weeks for downloading blockchain - that sounds like a lot. What kind of CPU and how much RAM do you have on your computer?

Thanks for the answer. Laptop is new, so there is essentially 500 GB free space, basically I don't have anything else on that laptop .
I figured out that maybe that freeze was due to overheating, because that freeze happened after laptop was already working on blockchain for several hours.
I will try to find debug.log file and post it.

Hello, so I have a new Dell laptop with Intel Pentium N3700, 4 GB RAM and 500 GB HDD with Ubuntu 16. I want to use it to store cryptocurrencies. So I downloaded Bitcoin Core 0.13 and it started synchronizing. When it got to the point that ~1 year 40 weeks were left to synchronize, computer just froze, keyboard didn't respond, mouse/ touchpad didn't respond too. I had to shut down computer with power button. I ran Bitcoin Core for several more times and every time it froze after 5 - 20 min. I tried Bitcoin Core 0.12 and result was the same.
However I managed to set up Dash Core (I am not trying to promote Dash here) and wallet for another coin and it downloaded both blockchains without problem.
Should I try older version of Bitcoin Core? But would that be safe? I guess I can use Electrum or other wallet but I wanted to use the "real" thing.

What is the actual number of DGB mined per day? I know I can find it somewhere but maybe someone can tell straight away.

I am interested too.

DigiReport would be useful now. Clarifying plans for 2016 etc.