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Title: bitcoin.conf Optimized to Download the Blockchain Post by: velhoti on January 03, 2020, 10:16:03 PM I am sync a full node but the download process is painfully slow, in a week I downloaded only ~95GB. I am using a pretty simple configuration:
Code: txindex=1 Is there a optimized configuration of bitcoin.conf focusing in download faster the blockchain? My PC specs are not high, it is a i3-2375M CPU @ 1.50GHz with 4GB RAM. I also storing the blockchain in a external HDD USB 2.0, not sure if is a bottleneck. My bandwidth is 25 GB, but I believe that it is not a problem since I can download a 300GB file much more fast (maybe a day) that Bitcoin. I've heard about the parameter -dbcach and tried it increasing to 2048, roughly half of my memory, but seems to have no effect here. Title: Re: bitcoin.conf Optimized to Download the Blockchain Post by: LoyceMobile on January 03, 2020, 10:20:58 PM The main problems are USB, HDD and low RAM.
I don't think software configuration matters much as long as your not upgrading. Title: Re: bitcoin.conf Optimized to Download the Blockchain Post by: Rath_ on January 03, 2020, 10:25:11 PM My bandwidth is 25 GB, but I believe that it is not a problem since I can download a 300GB file much more fast (maybe a day) that Bitcoin. Keep in mind that your node needs to verify each block which is a CPU intensive task. Your disk also has to perform a lot of operations per second. Using an SSD makes a difference. 25 GB of bandwidth doesn't sound right. That's quite low. Title: Re: bitcoin.conf Optimized to Download the Blockchain Post by: velhoti on January 03, 2020, 10:27:54 PM If I download in my internal HDD with SATA and after copy the entire folder to the external HDD, will work, can be faster?
Title: Re: bitcoin.conf Optimized to Download the Blockchain Post by: Rath_ on January 03, 2020, 10:34:26 PM If I download in my internal HDD with SATA and after copy the entire folder to the external HDD, will work, can be fastest? It should be a bit faster since USB 2.0 is a huge bottleneck itself. Still, your RAM, CPU and HDD will slow the whole process down. It will take you ages to move the blockchain data to the external drive. Title: Re: bitcoin.conf Optimized to Download the Blockchain Post by: HCP on January 03, 2020, 10:37:12 PM Most likely it will be "faster"... but bear in mind that is a relative term. If the internal drive is still a HDD and not an SSD, then the gains aren't likely to be very big.
Also, your CPU+RAM is relatively weak... That might be causing RAM Paging, which will be placing further strain on your HDD and memory controllers etc. Title: Re: bitcoin.conf Optimized to Download the Blockchain Post by: velhoti on January 03, 2020, 10:43:44 PM I edited the post changing "fastest" to "faster", sorry the error. This is really what I want, since I won't upgrade my specs now a bit increase in velocity is what i can have.
Title: Re: bitcoin.conf Optimized to Download the Blockchain Post by: LoyceMobile on January 03, 2020, 10:56:14 PM This is really what I want, since I won't upgrade my specs You may be surprised how cheap a ram upgrade would be. If your PC can handle it, it'll be a large overall improvement, not just for Bitcoin Core. The same if you replace your hdd for a ssd: you'll never want to go back.Title: Re: bitcoin.conf Optimized to Download the Blockchain Post by: BitMaxz on January 03, 2020, 11:19:18 PM Agree with the above increasing ram memory will improve your syncing blockchain.
And edit dbcache and remove the "#" (to enable it) under your bitcoin.conf to speed up the syncing. Follow this suggested below. If you have a lot of RAM (4 or more), you can open the bitcoin.conf file and add the following line: Code: dbcache=<n> Title: Re: bitcoin.conf Optimized to Download the Blockchain Post by: velhoti on January 03, 2020, 11:36:54 PM Agree with the above increasing ram memory will improve your syncing blockchain. And edit dbcache and remove the "#" (to enable it) under your bitcoin.conf to speed up the syncing. Follow this suggested below. If you have a lot of RAM (4 or more), you can open the bitcoin.conf file and add the following line: Code: dbcache=<n> I was using this configuration but my PC was freezing the mouse and video by lack of memory, and I had no sensitive increase in sync velocity, so I commented but keep it on file. Title: Re: bitcoin.conf Optimized to Download the Blockchain Post by: BitMaxz on January 04, 2020, 08:57:59 PM I was using this configuration but my PC was freezing the mouse and video by lack of memory, and I had no sensitive increase in sync velocity, so I commented but keep it on file. Try to decrease it until you find the stable one and keep monitoring your ram. Try to start at 100 (dbcache=100) and add this "maxmempool=100" then monitor the ram then increase the dbcache if there are still available ram space and put the same value on maxmempool. |