<p>Even along with slow internet speed, slow external drives, or else slow internet, the early blocks in a device's Initial Blockchain Download(IBD) may still appear to sync rapidly. But, once the device has progressed to block ~450, then sync times will slow down notably.</p>

CC BY-SA 4.0
2022-11-10T06:25:44.910Z
2022-11-10T06:25:44.910Z
Heena Kousar
<p>I've already fully synced my node, but I've noticed recently that the tip of my chain is occasionally a few blocks behind peers. What could cause my node to be slow to update? My peers have the latest blocks, and I have tried deleting my <code>peers.dat</code> file to rule out the possibility of bad peers. I am using a linux VM to run the node on a laptop, specs as follows:</p>
<pre><code>Processor Model: MediaTek MT Series
Processor Model Number: MT8183
Processor Speed (up to): 1.6 gigahertz
Storage Type: eMMC
Total Storage Capacity: 64 gigabytes
eMMC Capacity: 64 gigabytes
System Memory (RAM): 4 gigabytes

---- Memory Usage -----
Total Memory (kib): 3978600 
Available Memory (kib): 388820
Free Memory (kib): 287200

--- Cpu Usage ----
Usage User (%): 16
Usage System (%): 21
Usage Free (%): 62
</code></pre>
<p>Any suggestions to improve sync speed would be much appreciated. I am also running a lightning node on the same computer, and don't want a delayed sync to complicate things wrt maintaining channels because I did notice it crash once, though the reason is unclear.</p>

<bitcoin-core><lightning-network><synchronization><performance>
What can cause bitcoin node to be slow to sync?
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# What can cause bitcoin node to be slow to sync?

(Asked by: username_0 on 2022-11-08)

I've already fully synced my node, but I've noticed recently that the tip of my chain is occasionally a few blocks behind peers. What could cause my node to be slow to update? My peers have the latest blocks, and I have tried deleting my peers.dat file to rule out the possibility of bad peers. I am using a linux VM to run the node on a laptop, specs as follows:
Processor Model: MediaTek MT Series
Processor Model Number: MT8183
Processor Speed (up to): 1.6 gigahertz
Storage Type: eMMC
Total Storage Capacity: 64 gigabytes
eMMC Capacity: 64 gigabytes
System Memory (RAM): 4 gigabytes

---- Memory Usage -----
Total Memory (kib): 3978600 
Available Memory (kib): 388820
Free Memory (kib): 287200

--- Cpu Usage ----
Usage User (%): 16
Usage System (%): 21
Usage Free (%): 62

Any suggestions to improve sync speed would be much appreciated. I am also running a lightning node on the same computer, and don't want a delayed sync to complicate things wrt maintaining channels because I did notice it crash once, though the reason is unclear.

**Tags:** bitcoin-core, lightning-network, synchronization, performance


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## 1 answers

### Answer by username_1 on 2022-11-10. Score: 0

Even along with slow internet speed, slow external drives, or else slow internet, the early blocks in a device's Initial Blockchain Download(IBD) may still appear to sync rapidly. But, once the device has progressed to block ~450, then sync times will slow down notably.


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