Topic "Constant CPU usage(25%) except when...(case list given)"

Author Message
knyri
[View user's profile]

Joined: 2013-07-02
Posts: 1
Version: 5.2.1 (build 3231)
OS: Windows 7 x64
Interface: Both
Protocol: Any
Symptoms:
After connecting, WinSCP uses a constant 25% (roughly 3 billion cycles a second) of my CPU and the number of system calls hovers around 450,000 a second.
CPU usage falls to 1-2% when:
    Minimized
    Transferring files(using queue or not){1}
    When Any dialog is open

{1} When transferring with the queue and you switch to another session tab that is not transferring, the usage goes back up.
The thread state enters and stays in Wait:WrUserRequest in all the cases.

Does not occur with 5.1.5 (build 3261)

Tools:
Process Explorer - https://technet.microsoft.com/en-us/sysinternals/bb896653.aspx
Glint - https://sites.google.com/site/glintutility/
martin
[View user's profile]
Site Admin
Joined: 2002-12-10
Posts: 24530
Location: Prague, Czechia
Thanks for your report.

This bug has been added to the tracker:
http://winscp.net/tracker/show_bug.cgi?id=1013
Petr
[View user's profile]
Moderator
Joined: 2006-01-26
Posts: 50
Fixed in 5.2.2 beta and released today.
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