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

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[View user's profile]

Joined: 2013-07-02
Posts: 1
Version: 5.2.1 (build 3231)
OS: Windows 7 x64
Interface: Both
Protocol: Any
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:
    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)

Process Explorer -
Glint -
[View user's profile]
Site Admin
Joined: 2002-12-10
Posts: 26299
Location: Prague, Czechia
Thanks for your report.

This bug has been added to the tracker:
[View user's profile]
Joined: 2006-01-26
Posts: 50
Fixed in 5.2.2 beta and released today.

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