Some odd behaviour ... when sending / uploading files, my CPU usage goes to about 100%; Activity Monitor reports 'Kernel Task' as the culprit. I first noticed this when sending emails in Mail, but it is also happening whenever I use any upload protocol:
- Email attachment;
- FTP using Cyberduck or FireFTP (within Firefox);
- Syncing Evernote (suspect this is also FTP?);
- FTP via command line (
Any idea why this happens, or how to stop it?
(OSX Lion 10.7.2, Macbook Pro 2.4 Core Duo; customisations include Growl and Quicksilver)
Update: first line of output from
top -o cpu:
PID COMMAND %CPU TIME #TH #WQ #PORT #MREG 0 kernel_task 122.3 20:13.81 73/4 0 2 1907
Update 2: Just decided to try this out using wifi instead of my USB 3G modem ... and the problem disappears! Five samples during ftp upload give:
$ top -l 5 -stats pid,command,cpu,th | grep kernel_task 0 kernel_task 0.0 71/2 0 kernel_task 2.2 71/3 0 kernel_task 2.1 71/2 0 kernel_task 2.1 71/2 0 kernel_task 2.2 71/2
So the issue seems to be any upload with the USB modem ... but would still be good to find a solution!