Monero Support - page 18. | Bitcointalksearch.org

bitebits

legendary

Activity: 2242

Merit: 3523

Flippin' burgers since 1163.

I am running three full nodes (./bitmonerod --limit-rate 128000) on two different VPS providers located in Europe. There is a remarkable difference regarding the number of connections:

- VPS1 (high end specs) consistently has barely any outgoing connections. Simultaneously runs a Bitcoin node.
- VPS2 (low end specs) has plenty of incoming and outgoing connections, same VPS provider as VPS3.
- VPS3 (low end specs) has barely any outgoing connections, same VPS provider as VPS2.

VPS1 (4GB RAM, non-ssd, 2CPU, plenty of bandwidth, Ubuntu 15.1)

Quote

Height: 969051/969051 (100.0%) on mainnet, not mining, net hash 15.46 MH/s, v1, up to date, 8+4 connections

VPS2 (512MB RAM, non-ssd, 1CPU, 256GB bandwidth, Ubuntu 15.1) Same host as VPS3

Quote

Height: 969053/969053 (100.0%) on mainnet, not mining, net hash 15.56 MH/s, v1, up to date, 25+114 connections

VPS3 (512MB RAM, non-ssd, 1CPU, 256GB bandwidth, Ubuntu 15.1) Same host as VPS2

Quote

Height: 969071/969071 (100.0%) on mainnet, not mining, net hash 15.55 MH/s, v1, up to date, 8+3 connections

Strange behavior, especially between VPS 2 and VPS 3. Any possible ideas why this could happen?

americanpegasus

hero member

Activity: 770

Merit: 504

Quote from: owm123 on February 03, 2016, 04:59:47 PM

Quote from: bitowl on February 03, 2016, 04:55:38 PM

How big is the blockchain now?

7.9 GB on my hardrive.

Just goes to show that even if we could have mathematically designed this in say, 1995 - it would have been impossible to implement on a global scale. We need gigabytes of storage to be cheap and easy... and that didn't happen until the two-thousand-teens.

owm123

sr. member

Activity: 392

Merit: 250

Quote from: bitowl on February 03, 2016, 04:55:38 PM

How big is the blockchain now?

7.9 GB on my hardrive.

bitowl

member

Activity: 85

Merit: 10

How big is the blockchain now?

bitebits

legendary

Activity: 2242

Merit: 3523

Flippin' burgers since 1163.

Quote from: pa on February 03, 2016, 03:11:38 PM

Quote from: bitebits on February 03, 2016, 03:04:13 PM

I feel almost ashamed to ask. But since support was so quick last time, I do it anyway

Setting up my second Monero node on a VPS. But instead of downloading the blockchain, I like to upload it from my local harddisk (to decrease the change of being kicked from the VPS while syncing).

But where under Ubuntu Server Linux is the blockchain stored? Been googling without any result.

In OS X it's [home directory] --> [.bitmonero] --> [lmdb] --> [data.mdb].

I think it's the same in Linux. You can probably just copy and paste the lmdb subdirectory into the hidden .bitmonero directory.

Thanks pa, ArcticMine and GingerAle. Indeed found it in: /root/.bitmonero/lmdb/
Standard Winscp for FTP does not show hidden files:

Quote

Display hidden files in WinSCP

Solution
Click on the "view" menu (or "options", if using the Norton Commander interface).

Click on "preferences".

In the preferences window, click on "Panels" on the left menu.

Uncheck (or check) the "Show Hidden Files" box to show or hide the files.

ArticMine

legendary

Activity: 2282

Merit: 1050

Monero Core Team

I can confirm that in Ubuntu the blockchain is stored in the hidden directory .bitmonero/lmdb/data.mdb in the users home directory.

Code:

/home//.bitmonero/lmdb/data.mdb

use the command

Code:

 ls -a

in terminal to list hidden files

GingerAle

legendary

Activity: 1260

Merit: 1008

Quote from: pa on February 03, 2016, 03:11:38 PM

Quote from: bitebits on February 03, 2016, 03:04:13 PM

I feel almost ashamed to ask. But since support was so quick last time, I do it anyway

Setting up my second Monero node on a VPS. But instead of downloading the blockchain, I like to upload it from my local harddisk (to decrease the change of being kicked from the VPS while syncing).

But where under Ubuntu Server Linux is the blockchain stored? Been googling without any result.

In OS X it's [home directory] --> [.bitmonero] --> [lmdb] --> [data.mdb].

I think it's the same in Linux. You can probably just copy and paste the lmdb subdirectory into the hidden .bitmonero directory.

I can confirm its the same in ubuntu:

/home/username/.bitmonero/lmdb/data.mdb

pa

hero member

Activity: 528

Merit: 501

Quote from: bitebits on February 03, 2016, 03:04:13 PM

I feel almost ashamed to ask. But since support was so quick last time, I do it anyway

Setting up my second Monero node on a VPS. But instead of downloading the blockchain, I like to upload it from my local harddisk (to decrease the change of being kicked from the VPS while syncing).

But where under Ubuntu Server Linux is the blockchain stored? Been googling without any result.

In OS X it's [home directory] --> [.bitmonero] --> [lmdb] --> [data.mdb].

I think it's the same in Linux. You can probably just copy and paste the lmdb subdirectory into the hidden .bitmonero directory.

bitebits

legendary

Activity: 2242

Merit: 3523

Flippin' burgers since 1163.

I feel almost ashamed to ask. But since support was so quick last time, I do it anyway

Setting up my second Monero node on a VPS. But instead of downloading the blockchain, I like to upload it from my local harddisk (to decrease the change of being kicked from the VPS while syncing).

But where under Ubuntu Server Linux is the blockchain stored? Been googling without any result.

mmortal03

legendary

Activity: 1762

Merit: 1011

Quote from: farfiman on January 28, 2016, 11:30:48 AM

You stated a 32gb thumb drive- not an SSD- way big difference in speed.

It's one of the faster thumb drives from 2013. No, it's not an internal SSD, but it's still better than a lot of HDDs, especially if random write speed helps. I'm not even certain that it does. A bottleneck for people could simply be the overall sequential write speed of the drive, SSD or not. I'm simply curious to know.

Btw, I tested the same machine, syncing from scratch to the internal HDD, and it took about the same amount of time as the thumb drive, so there's probably some other bottleneck involved. It could be the slow processor. I'll have to run some tests on a faster machine.

Quote from: GingerAle on January 28, 2016, 11:32:47 AM

If you ran it with verify-off you might have seen some impressive numbers.

I thought --verify 0 was a blockchain_import command, not a bitmonerod command, so that wouldn't work...

On a related note, I *did* try doing the bootstrap with blockchain.raw, but blockchain_import crashes on the first batch commit (or on block 190 if batching is off), so there's that. I made sure I was running the latest version, so, apparently, crashing during importing was *not* fixed.

Anyway, I'm just curious about the performance aspects here.

smooth

legendary

Activity: 2968

Merit: 1198

Quote from: GingerAle on January 28, 2016, 11:32:47 AM

Quote from: mmortal03 on January 28, 2016, 10:29:10 AM

Quote from: farfiman on January 28, 2016, 04:59:50 AM

Quote from: mmortal03 on January 28, 2016, 04:38:31 AM

Quote from: DonYo on January 27, 2016, 02:09:30 PM

Code:

D:\XMR\bitmonerod.exe --data-dir C:\blockchain\XMR

Yeah, tangential to this, yesterday I used this command to test how long it would take to download the Monero blockchain from scratch to a SanDisk Extreme 32GB USB 3.0 thumb drive. This was with an ASUS Eee PC 1215B Netbook (AMD E-350, 6GB RAM) running Windows 10 over a 66mb/s Ethernet connection. It took around 33 hours. This seems slower than a lot of people have been reporting.

Might have been faster to download to the HDD and move to the thumbdrive.

Sure, but people have been arguing that SSDs have properties that make them significantly faster than HDDs at syncing the Monero blockchain (not to be confused with downloading it, of course). I thought I'd give that a shot. Obviously, this SSD's faster random write speed isn't helping that much. There must be some other bottleneck here.

I'd hazard the lack of AES-NI in that CPU is helping form a bottleneck

http://www.cpu-world.com/CPUs/Bobcat/AMD-E%20Series%20E-350%20-%20EME350GBB22GT.html

If you ran it with verify-off you might have seen some impressive numbers. I'm not 100% sure, but when bitmonerod is verifying and building its own blockchain on your device, it is verifying each block. So you essentially just re-mined the entire blockchain (well, not really.. you weren't finding blocks per se, but you were validating the work that was done). So if you were to start_mining in your current daemon and then did show_hr, you could see what kind of hash per second that CPU can do... then take an estimated # of transactions in the entire monero blockchain and divide by your hash / sec, and that'll give you a rough estimate of the verify-induced bottleneck. Perhaps. I could also not know what I'm talking about.

There are precomputed hashes for most of the blockchain (except the most recent blocks) so it shouldn't make much difference. But some cheap computers are just going to be slow one way or another, certainly a lot slower than high end desktops or servers.

GingerAle

legendary

Activity: 1260

Merit: 1008

Quote from: mmortal03 on January 28, 2016, 10:29:10 AM

Quote from: farfiman on January 28, 2016, 04:59:50 AM

Quote from: mmortal03 on January 28, 2016, 04:38:31 AM

Quote from: DonYo on January 27, 2016, 02:09:30 PM

Code:

D:\XMR\bitmonerod.exe --data-dir C:\blockchain\XMR

Yeah, tangential to this, yesterday I used this command to test how long it would take to download the Monero blockchain from scratch to a SanDisk Extreme 32GB USB 3.0 thumb drive. This was with an ASUS Eee PC 1215B Netbook (AMD E-350, 6GB RAM) running Windows 10 over a 66mb/s Ethernet connection. It took around 33 hours. This seems slower than a lot of people have been reporting.

Might have been faster to download to the HDD and move to the thumbdrive.

Sure, but people have been arguing that SSDs have properties that make them significantly faster than HDDs at syncing the Monero blockchain (not to be confused with downloading it, of course). I thought I'd give that a shot. Obviously, this SSD's faster random write speed isn't helping that much. There must be some other bottleneck here.

I'd hazard the lack of AES-NI in that CPU is helping form a bottleneck

http://www.cpu-world.com/CPUs/Bobcat/AMD-E%20Series%20E-350%20-%20EME350GBB22GT.html

If you ran it with verify-off you might have seen some impressive numbers. I'm not 100% sure, but when bitmonerod is verifying and building its own blockchain on your device, it is verifying each block. So you essentially just re-mined the entire blockchain (well, not really.. you weren't finding blocks per se, but you were validating the work that was done). So if you were to start_mining in your current daemon and then did show_hr, you could see what kind of hash per second that CPU can do... then take an estimated # of transactions in the entire monero blockchain and divide by your hash / sec, and that'll give you a rough estimate of the verify-induced bottleneck. Perhaps. I could also not know what I'm talking about.

farfiman

legendary

Activity: 1449

Merit: 1001

Quote from: mmortal03 on January 28, 2016, 10:29:10 AM

Quote from: farfiman on January 28, 2016, 04:59:50 AM

Quote from: mmortal03 on January 28, 2016, 04:38:31 AM

Quote from: DonYo on January 27, 2016, 02:09:30 PM

Code:

D:\XMR\bitmonerod.exe --data-dir C:\blockchain\XMR

Yeah, tangential to this, yesterday I used this command to test how long it would take to download the Monero blockchain from scratch to a SanDisk Extreme 32GB USB 3.0 thumb drive. This was with an ASUS Eee PC 1215B Netbook (AMD E-350, 6GB RAM) running Windows 10 over a 66mb/s Ethernet connection. It took around 33 hours. This seems slower than a lot of people have been reporting.

Might have been faster to download to the HDD and move to the thumbdrive.

Sure, but people have been arguing that SSDs have properties that make them significantly faster than HDDs at syncing the Monero blockchain (not to be confused with downloading it, of course). I thought I'd give that a shot. Obviously, this SSD's faster random write speed isn't helping that much. There must be some other bottleneck here.

You stated a 32gb thumb drive- not an SSD- way big difference in speed.

mmortal03

legendary

Activity: 1762

Merit: 1011

Quote from: farfiman on January 28, 2016, 04:59:50 AM

Quote from: mmortal03 on January 28, 2016, 04:38:31 AM

Quote from: DonYo on January 27, 2016, 02:09:30 PM

Code:

D:\XMR\bitmonerod.exe --data-dir C:\blockchain\XMR

Yeah, tangential to this, yesterday I used this command to test how long it would take to download the Monero blockchain from scratch to a SanDisk Extreme 32GB USB 3.0 thumb drive. This was with an ASUS Eee PC 1215B Netbook (AMD E-350, 6GB RAM) running Windows 10 over a 66mb/s Ethernet connection. It took around 33 hours. This seems slower than a lot of people have been reporting.

Might have been faster to download to the HDD and move to the thumbdrive.

Sure, but people have been arguing that SSDs have properties that make them significantly faster than HDDs at syncing the Monero blockchain (not to be confused with downloading it, of course). I thought I'd give that a shot. Obviously, this SSD's faster random write speed isn't helping that much. There must be some other bottleneck here.

farfiman

legendary

Activity: 1449

Merit: 1001

Quote from: mmortal03 on January 28, 2016, 04:38:31 AM

Quote from: DonYo on January 27, 2016, 02:09:30 PM

Code:

D:\XMR\bitmonerod.exe --data-dir C:\blockchain\XMR

Yeah, tangential to this, yesterday I used this command to test how long it would take to download the Monero blockchain from scratch to a SanDisk Extreme 32GB USB 3.0 thumb drive. This was with an ASUS Eee PC 1215B Netbook (AMD E-350, 6GB RAM) running Windows 10 over a 66mb/s Ethernet connection. It took around 33 hours. This seems slower than a lot of people have been reporting.

Might have been faster to download to the HDD and move to the thumbdrive.

mmortal03

legendary

Activity: 1762

Merit: 1011

Quote from: DonYo on January 27, 2016, 02:09:30 PM

Code:

D:\XMR\bitmonerod.exe --data-dir C:\blockchain\XMR

Yeah, tangential to this, yesterday I used this command to test how long it would take to download the Monero blockchain from scratch to a SanDisk Extreme 32GB USB 3.0 thumb drive. This was with an ASUS Eee PC 1215B Netbook (AMD E-350, 6GB RAM) running Windows 10 over a 66mb/s Ethernet connection. It took around 33 hours. This seems slower than a lot of people have been reporting.

DonYo

sr. member

Activity: 432

Merit: 251

Code:

D:\XMR\bitmonerod.exe --data-dir C:\blockchain\XMR

dEBRUYNE

legendary

Activity: 2268

Merit: 1141

Quote from: bitebits on January 27, 2016, 01:43:47 PM

Is there a bitmonerod command (Windows), like with Bitcoin Core, to have the Monero blockchain stored in a different file location?
I would like to store the Monero blockchain on my D drive instead of the C drive with limited space.

Quote

You can also store Bitcoin data files in any other drive or folder.

If you have already downloaded the data then you will have to move the data to the new folder. If you want to store them in D:\BitcoinData then click on "Properties" of a shortcut to bitcoin-qt.exe and add -datadir=D:\BitcoinData at the end as an example:

"C:\Program Files (x86)\Bitcoin\bitcoin-qt.exe" -datadir=d:\BitcoinData
Start Bitcoin, now you will see all the files are created in the new data directory.

From reddit: (someone asked something similiar a few days ago)

Quote

yes, bitmonerod does have this feature for specifying where you want the blockhain. i'm not sure on the default dir as i'm a osx/linux user. launch bitmonerod with --data-dir /path/to/whereyouwantblockchaintogo

GingerAle

legendary

Activity: 1260

Merit: 1008

Quote from: bitebits on January 27, 2016, 01:43:47 PM

Is there a bitmonerod command, like with Bitcoin Core, to have the Monero blockchain stored in different file location?
I would like to store the Monero blockchain on my D drive instead of the C drive with limited space.

Quote

You can also store Bitcoin data files in any other drive or folder.

If you have already downloaded the data then you will have to move the data to the new folder. If you want to store them in D:\BitcoinData then click on "Properties" of a shortcut to bitcoin-qt.exe and add -datadir=D:\BitcoinData at the end as an example:

"C:\Program Files (x86)\Bitcoin\bitcoin-qt.exe" -datadir=d:\BitcoinData
Start Bitcoin, now you will see all the files are created in the new data directory.

if your in windows, make your way to your terminal and type bitmonerod.exe --help

this will give you all of the launch options. One of them should be data-dir.

bitebits

legendary

Activity: 2242

Merit: 3523

Flippin' burgers since 1163.

Is there a bitmonerod command (Windows), like with Bitcoin Core, to have the Monero blockchain stored in a different file location?
I would like to store the Monero blockchain on my D drive instead of the C drive with limited space.

Quote

You can also store Bitcoin data files in any other drive or folder.

If you have already downloaded the data then you will have to move the data to the new folder. If you want to store them in D:\BitcoinData then click on "Properties" of a shortcut to bitcoin-qt.exe and add -datadir=D:\BitcoinData at the end as an example:

"C:\Program Files (x86)\Bitcoin\bitcoin-qt.exe" -datadir=d:\BitcoinData
Start Bitcoin, now you will see all the files are created in the new data directory.

Edit: found it. Somehow this was not showing with bitmonerd /? but only when I used an incorrect option:

Quote

Settings:
--data-dir arg (=C:\ProgramData\bitmonero)
Specify data directory

Edit2: wow you guys are quick! Thanks

Apparently bitmonerod.exe /? gives different options then bitmonerd.exe --help

Topic: Monero Support - page 18. (Read 83015 times)