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3.0/3.1 Alpha - CPU usage bug


Simeras

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How to reproduce the bug:

1. Open Task Manager to monitor CPU usage.

2. Find a big torrent, with multiple files in it. At least one of them must be larger than 4GB (important).

3. When adding torrent, select no files (Select None) in Download Dialog.

4. On files Tab select file (any priority), smaller that 4GB - notice a short spike in CPU usage and no further problems. This step is not important, it just shows, that smaller that 4GB files don't trigger the bug .

5. Select a file, which is larger than 4GB - it should trigger the bug.

It will download for a short period of time, then "Disk Overloaded" will pop up (without actual HDD usage), download will stop, the file will not be created in download dir., and uTorrent process hangs in processes if you close the program, eating CPU.

I checked this with different torrents and different computers (WinXP 32bit, Win7 64bit).

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I too have this high CPU usage bug. Also, when I close uTorrent by exiting the program (not minimizing), the process stays running at 100% CPU.

I was using v2.2.1 and it worked perfectly. CPU usage while downloading a 12GB file was 1-2%. So I decided to "upgrade" to the latest build yesterday and I get these issues, keeping the same torrent file downloading and no others.

So I just installed v2.2.1 back and everything is perfect. Maybe I'll keep trying every release to see if this major bug gets repaired. Because basically v3+ is useless.

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How to reproduce the bug:

1. Open Task Manager to monitor CPU usage.

2. Find a big torrent, with multiple files in it. At least one of them must be larger than 4GB (important).

3. When adding torrent, select no files (Select None) in Download Dialog.

4. On files Tab select file (any priority), smaller that 4GB - notice a short spike in CPU usage and no further problems. This step is not important, it just shows, that smaller that 4GB files don't trigger the bug .

5. Select a file, which is larger than 4GB - it should trigger the bug.

It will download for a short period of time, then "Disk Overloaded" will pop up (without actual HDD usage), download will stop, the file will not be created in download dir., and uTorrent process hangs in processes if you close the program, eating CPU.

I checked this with different torrents and different computers (WinXP 32bit, Win7 64bit).

Hmm, that's a pretty nasty issue.

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You sir, are my friken Hero

I reported it in http://forum.utorrent.com/viewtopic.php?id=103654 as Horder mode.

I could not pin it down, but knew it had to do with large torrents that cause it to go into this mode.

Once they fix this, I can hopefully upgrade the servers from 2.0.4 - Which has been the most reliable.

Karma, beer, whatever cosmic goodies you like for you from me :D

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