[v16] [Win] Syncing extremely slowly after a while

[Laurentiu-Andronache]

Description of bug:
Issue described in more detail in the last two posts from here, from me and @james-five: #1168, starting with "While not crashing anymore,"

Steps to reproduce the issue:

1. Start program
2. Be happy that it's syncing fast
3. "Huh, what's happening, now it's so slow!"

Describe the results you received:
Sadness

Describe the results you expected:
Happiness

Additional information you deem important (e.g. issue happens only occasionally):

Environment:
OS Name Microsoft Windows 10 Pro
Version 10.0.17134 Build 17134

logs
I'm probably stupid, but I can't find logs anymore. Maybe they're only generated when the program crashes.

[Laurentiu-Andronache]

Issue not fixed by me turning off Windows Firewall and Defender (I don't have any other antivirus or firewall).

[Sovxx]

I have noticed the same thing since v16.
The downloaded blocks count goes from 30000 to 29500 in ~1 hour...
The wallet does not crash though.
I am using ubuntu 64.

[Sovxx]

switched back to v15.2
it went from 27000 to 3000 in 5 minutes...

[Sovxx]

restarting v16 helps in decreasing the downloaded block counts (a few thousands during the first 10 or 20 minutes, then it slows down a lot)

[ghost]

Same thing happening here in Ubuntu 18.04 64bits.

[rkeene]

This issue should be resolved by Nano V16.1, which is scheduled to be released later today.

[rkeene]

We're moving this release back a few days.

[rkeene]

This should now be resolved in V16.1, which has just been released. If it has not, please re-open this ticket so we can track it further. Thanks !

[james-five]

Here's my experience with v16.1 on a powerful Win10 x64 rig with gigabit connection.

Deleted exisiting db for a fresh bootstrap. After running for 7 hours had reached about 13.28 / 13.45 million blocks. It had likely reached this point a few hours earlier. Seemed to have stopped syncing further or at best going extremely slowly. Logs look normal.

Restarted the node and within a few minutes perfectly in sync.

So doesn't seem entirely stable / fixed yet. But better for sure.

[Laurentiu-Andronache]

for me, it worked fine