Yes, try to restart the node and check again
synching resumed! Thank you again Alex and have a great day 
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Allow me to continue to share my experience: uninterrupted synching for last 24 hours of the 3 nodes but seems VERY slow: around 15-20% progress (reaching currently 95%). As reminder we set up a swap of 5Gb on top of 8Gb RAM.
Below is some cloud graph of last 24 hours.
any thoughts or advice welcome
Cheers!
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Hi Patrwx,
If you’re open to suggestions, try setting up a node on testnet using the instructions at Stake Pool Course | Cardano Developer Portal See how the bandwidth, CPU usage and Disk I/O graphs for the testnet node compare with the graphs you are getting for the mainnet nodes.
If the performance of the testnet node seems better, then try switching the testnet node to run as a relay on mainnet and see if there is any change in performance.
[CHG]
Thanks for your suggestion, I did create testnet BP and relay and it has worked just fine for days, whereas my mainnet Block Producer node never got current.
Hi Patrwx,
All else being equal, I do observe that currently a node running on mainnet consumes or requires noticably more system resources than a node running on testnet.
With Cardano Node 1.34.1 requiring 12 GB RAM minimum (see the Technical Specification section at specifications Releases · input-output-hk/cardano-node · GitHub), perhaps configuring a 5 GB swap file in addition to 8 GB RAM may not be enough memory for your operating system to run smoothly when the node is running on mainnet.
Currently, I do not have access to a node in the process of synchronizing for the first time to use as reference and I do not have time today to rename the database folder and test. However, while there may be some fluctuation in the statistics over time, here are screen grabs taken today from gLiveView for a synchronized node running on mainnet compared with a synchronized node running on testnet. Both nodes are hosted using the same system and runtime configurations:
│- NODE RESOURCE USAGE - MAINNET-------------│
│ CPU node : 8.1% Mem (Live) : 4.8G │
│ Mem (RSS) : 9.4G Mem (Heap) : 10.7G │
│- NODE RESOURCE USAGE - TESTNET-------------│
│ CPU node : 3.3% Mem (Live) : 1.6G │
│ Mem (RSS) : 3.0G Mem (Heap) : 3.0G │
If there are no other technical issues to troubleshoot, then maybe the difference in memory usage helps explain the performance decrease in your node that you observed when running on mainnet,
CHG
Thx CHG,
I indeed will look into RAM increase once I get experience from functioning testnet setup! Cheers for the insight.