On Fri, 2014-07-11 at 12:51 -0400, Shawn Starr wrote: > On July 11, 2014 08:39:55 AM Mike Chambers wrote: > > I forget, but isn't there a parameter to turn off debugging on kernels > > if so desired? Maint F21, not rawhide (cause I know about the rawhide > > debug kernels). > > > > > > Yes the one I have (that came installed on F21) does have it on. > > I seem to use slub_debug=- which removed all SLUB memory debugging which was > quite taxing. Note that only pre-rc1 kernel builds have the slub debugging stuff turned on. Builds of rc1 and later have it turned off. This is a compromise from the kernel team for the issue of slub debugging being incredibly slow. You can just keep slub_debug=- in your kernel parameters for all kernels, it'll never break anything, but most of the time it won't be doing anything. You can't turn kernel debugging off entirely at runtime; if the kernel has slub debugging enabled then turning it off will make things noticeably faster, but a slub debugging kernel with slub debugging turned off or a 'regular' debugging kernel will still be noticeably slower than a release kernel. -- Adam Williamson Fedora QA Community Monkey IRC: adamw | Twitter: AdamW_Fedora | XMPP: adamw AT happyassassin . net http://www.happyassassin.net -- test mailing list test@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe: https://admin.fedoraproject.org/mailman/listinfo/test
