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#AskNostr let's hear your opinions about this exasperating IBD process I'm going through with Bitcoin Core on Ubuntu.

As I mentioned, this is a laptop with an i7 7th gen 3.7 GHz processor, 8 Gb memory, and I've set my data folder and blocks folder to an external SSD (on a USB 3.0 port). I completely nuked the laptop's disk and did a 100% fresh exclusive install of Ubuntu 22.04. Nothing else on this computer other than the cleanly installed OS.

I don't know much about anything, but what I can see on my system monitor is:

- CPU cores working at 10-20%

- Memory working at 40%

- Swap working full capacity, at 100%

- Network working at laughable bandwidth

Interestingly, the network monitor shows bursts of incoming data coinciding with bursts of CPU work (50-60%). Paired with the 100% swap effort, I conclude that's the bottleneck. Am I onto something here?

In the Bitcoin Core options, I set the size of the database cache to 1000 vs the default 300 (or was it 450? can't recall). Is there any point to further tweaking it?

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GrumpyGardener 1y ago

Ubuntu will sometimes start using a ton of system resources. It's usually gnome doing something stupid in the background.

I'm running Bitcoin core on Ubuntu 20.04 with an electric server and lightning server on default settings. Works great. Been humming along for almost 2 years.

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Discussion

GrumpyGardener 1y ago

Electrum server*

hh 1y ago

I have no doubt *once it's running* it will work beautifully. The problem is bootstrapping the bloody thing.

It's not the CPU, it's not the RAM, it's not bandwidth, it's not SSD writing speed (the monitor says bitcoin-qt is writing at a mere 20 MiB/s). The only thing I see totally at full capacity is the swap, at 2.1 Gb.

Do you think tweaking the db cache setting will help? Is there any other setting to tweak?

GrumpyGardener 1y ago

Man, idk. Are you still syncing to the network?

hh 1y ago

85%, progressing at 0.x% hourly. Sometimes less than 0.01%.

I Am Legend 1y ago

I am having trouble keeping my computer awake while running bitcoin core on Ubuntu, I have all the settings I can see for keeping it awake and have even tried caffeine, what am I missing ?