Tryed to wait some hours: files synced. Somehow it takes way to long to wait. Some hours for full complete sync if many file changed occured.
I tryed again with syncing DCIM/Camera dir to PC from scratch (except some of files).
From: Android (2.0.8 Fork)
To: PC (W10) (2.0.8)
Directory size: 2 folders, 7712 files. 50.4 GB
Full initial sync took from: 17:23 to 23:23. 6 hours.
From target side: synced ~40.8 GB which is kinda slow. Between 2-3MB/s avg
I suppose something doing too slow and it’s not normal.
I have previously (1-2 years ago) done reverse sync (PC > Phone) with all my data. It was performed faster that this test case. If remember correctly - around 1h to push 100 GB of data.
Log attached (without debug option)
Moreover, as I see: connection is direct: not relayed, NATed and etc. (looked for connection/disconnection events):
Line 29024: 2025-09-09 16:56:16 INF Established secure connection (device=J44BQQD connection.local=192.168.0.100:22000 connection.remote=192.168.0.120:48516 connection.type=tcp-server connection.lan=true connection.crypto=TLS1.3-TLS_AES_128_GCM_SHA256 connection.prio=10 connection.id=633K75U0GS1FKHTE5LEE15E1HU log.pkg=connections)
Line 29025: 2025-09-09 16:56:16 INF New device connection (device=J44BQQD address=192.168.0.120:48516 remote.name="Nothing Phone" remote.client=syncthing remote.version=v2.0.8 log.pkg=model)
Line 29132: 2025-09-09 16:59:32 INF Lost device connection (kind=primary device=J44BQQD connection=192.168.0.100:22000-192.168.0.120:48516/tcp-server/TLS1.3-TLS_AES_128_GCM_SHA256/LAN-P10-633K75U0GS1FKHTE5LEE15E1HU error="reading length: read tcp 192.168.0.100:22000->192.168.0.120:48516: wsarecv: An existing connection was forcibly closed by the remote host." remaining=0 log.pkg=model)
Line 29133: 2025-09-09 16:59:32 INF Connection closed (device=J44BQQD connection=192.168.0.100:22000-192.168.0.120:48516/tcp-server/TLS1.3-TLS_AES_128_GCM_SHA256/LAN-P10-633K75U0GS1FKHTE5LEE15E1HU error="reading length: read tcp 192.168.0.100:22000->192.168.0.120:48516: wsarecv: An existing connection was forcibly closed by the remote host." log.pkg=model)
Line 29141: 2025-09-09 16:59:32 INF Established secure connection (device=J44BQQD connection.local=192.168.0.100:64176 connection.remote=192.168.0.120:42639 connection.type=tcp-client connection.lan=true connection.crypto=TLS1.3-TLS_AES_128_GCM_SHA256 connection.prio=10 connection.id=633K7SPGF5QOGCN71LRO7C3TMA log.pkg=connections)
Line 29142: 2025-09-09 16:59:32 INF New device connection (device=J44BQQD address=192.168.0.120:42639 remote.name="Nothing Phone" remote.client=syncthing remote.version=v2.0.8 log.pkg=model)
###########################
Line 683: 2025-09-10 01:22:22 INF Lost device connection (kind=primary device=J44BQQD connection=192.168.0.100:64176-192.168.0.120:42639/tcp-client/TLS1.3-TLS_AES_128_GCM_SHA256/LAN-P10-633K7SPGF5QOGCN71LRO7C3TMA error="reading length: read tcp4 192.168.0.100:64176->192.168.0.120:42639: wsarecv: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond." remaining=0 log.pkg=model)
Line 684: 2025-09-10 01:22:22 INF Connection closed (device=J44BQQD connection=192.168.0.100:64176-192.168.0.120:42639/tcp-client/TLS1.3-TLS_AES_128_GCM_SHA256/LAN-P10-633K7SPGF5QOGCN71LRO7C3TMA error="reading length: read tcp4 192.168.0.100:64176->192.168.0.120:42639: wsarecv: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond." log.pkg=model)
Line 685: 2025-09-10 01:25:04 WRN Failed to exchange Hello messages (device=J44BQQD address=84.15.189.112:27262 error=EOF log.pkg=connections)
Line 686: 2025-09-10 01:25:08 INF Established secure connection (device=J44BQQD connection.local="[::]:22000" connection.remote=192.168.0.120:42639 connection.type=quic-client connection.lan=true connection.crypto=TLS1.3-TLS_AES_128_GCM_SHA256 connection.prio=20 connection.id=633NM89MHGCKINE2UMEPB7192U log.pkg=connections)
Line 687: 2025-09-10 01:25:08 INF New device connection (device=J44BQQD address=192.168.0.120:42639 remote.name="Nothing Phone" remote.client=syncthing remote.version=v2.0.8 log.pkg=model)
Line 688: 2025-09-10 01:25:15 INF Established secure connection (device=J44BQQD connection.local=192.168.0.100:22000 connection.remote=192.168.0.120:38736 connection.type=tcp-server connection.lan=true connection.crypto=TLS1.3-TLS_AES_128_GCM_SHA256 connection.prio=10 connection.id=633NM945SEOPSB41TVF6A4225K log.pkg=connections)
Line 689: 2025-09-10 01:25:15 INF Additional device connection (device=J44BQQD address=192.168.0.120:38736 count=1 log.pkg=model)
Line 690: 2025-09-10 01:25:15 INF Lost device connection (kind=primary device=J44BQQD connection="[::]:22000-192.168.0.120:42639/quic-client/TLS1.3-TLS_AES_128_GCM_SHA256/LAN-P20-633NM89MHGCKINE2UMEPB7192U" error="replacing connection" remaining=1 log.pkg=model)
(Continued below, because only 2 files can be attached. Splitted, not uploading correctly)
/storage/emulated/0/DCIM:
7994 files
5 folders
52 GB
Waited for about 1.5h. Synced only 5.5GB and 1100 files
Logs (below because only 2 files can be attached):
Android side logs (below because only 2 files can be attached):
In looks like problems with hashing or similar. Like something throttling process.
Moreover, “Scan time remaining” likes to increment to hours or even days “remaining”, sync some files after N minutes, decrement and repeat process again.
P.S. Suppose somebody from staff members can merge posts because of 2 files limit for new users.
And take out one of replies to this topic from antispam filter
Suppose now attached all of information to analyze and reproduce.
