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Possible Bug: Disk Write Bytes Keep Increasing
Posted: 12.02.2026 15:06
by katwalk
I think I’ve found a possible disk write issue:
I open around 20 lightweight files (all just a few KB), even without editing very much, CudaText’s “Disk write bytes” keeps going up nonstop.
After running for about half a day, the total writes are already in the GB range. I’ve even seen one long run go past 20GB. For a text editor, that amount of background writing while sitting idle doesn’t seem reasonable.
Here are the monitoring screenshots:
File size reference:
https://files.seeusercontent.com/2026/0 ... 56-33.webp
Disk write data:
https://files.seeusercontent.com/2026/0 ... 55-07.webp
Windows 10
CudaText
1.230.7.0
Re: Possible Bug: Disk Write Bytes Keep Increasing
Posted: 12.02.2026 15:52
by main Alexey
set this user.json option:
"ui_session_save_interval": 0,
and try again. I guess that session saving does that 'writing'.
Re: Possible Bug: Disk Write Bytes Keep Increasing
Posted: 12.02.2026 16:06
by main Alexey
also I asked the Qwen AI how to find which files 'cudatext.exe' is writing to.
To monitor which files cudatext.exe is writing to during high disk activity, use these Windows tools (in order of effectiveness):
1. Process Monitor (ProcMon) – Recommended
This free Microsoft Sysinternals tool shows real-time file system activity per process with full path details:
Code: Select all
Download from: https://learn.microsoft.com/en-us/sysinternals/downloads/procmon
Run as Administrator
Start capture (magnifying glass icon)
Set a filter:
Process Name is cudatext.exe → Include → Add → OK
Reproduce the high-write activity
In the results view:
Look for "WriteFile" or "CreateFile" operations with "SUCCESS" result
The "Path" column shows the exact files being written
Use Tools → File Summary to aggregate writes by file path
2. Resource Monitor – Built-in Alternative
Less detailed but requires no installation:
Code: Select all
Press Win+R → type resmon → Enter
Go to Disk tab
Under "Disk Activity", filter by cudatext.exe
Shows files currently being accessed (but limited history/aggregation)
Re: Possible Bug: Disk Write Bytes Keep Increasing
Posted: 12.02.2026 17:28
by katwalk
The change has taken effect.
I set "ui_session_save_interval": 0 in user.json, and the constant write activity is gone. It is now as calm as a lake in winter.
Screen recording (Before):
https://i.see.you/2026/02/12/9Blp/Disk- ... ext-22.mp4
Screen recording (After):
https://i.see.you/2026/02/12/eu4K/Disk- ... -after.mp4
Everything looks good for now. If anything unusual comes up later, I will share an update. Thanks for the support.
Re: Possible Bug: Disk Write Bytes Keep Increasing
Posted: 12.02.2026 17:32
by main Alexey
btw, I cannot see screenshots/videos from my Ru town. sites are blocked. but ok, it is solved.
