On Sat, 2010-10-30 at 21:02 +0800, Aidar Kultayev wrote: > Hi, > > here is what I have : > > .ext4 mounted with data=ordered > .-tip tree ( uname -a gives : Linux pussy 2.6.36-tip+ ) > > here is the latencytop & powertop & top screenshot: > > http://picasaweb.google.com/lh/photo/bMTgbVDoojwUeXtVdyvIKw?feat=directlink > > the system is/was doing : > .dd if=/dev/zero of=test.10g bs=1M count=10000;rm test.10g > .netbeans > .compiling gcc-4.5.1 > .running VBox, which wasn't doing any IO. The guest os was idle in other words > .vlc > .chromium > .firefox > and bunch of other small stuff. > > Even without having running DD, the mouse cursor would occasionally > lag. The alt+tab effect in KWin would take 5+seconds to workout. > When I run DD on top of the workload it consistently made system much > more laggy. The cursor would freeze much more frequent. It is like if > you drag your mouse physically, but the cursor on the screen would > jump discretely, in other words there is no continuity. > Music would stop. > > I am free to try out anything here. would you please try the vm_exec protect patch here? http://www.spinics.net/lists/linux-mm/msg09617.html Thanks, Shaohua -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>