On 2011-08-20 13:51, Edgar E. Iglesias wrote: > Lately, my TCG emulated machines have been running terribly slow. > Like a factor 3 or 4 slower, hardly usable. > > I bisected it to this: > > commit d5ab9713d2d4037fd56b0adddd26c8d4dc11cf09 > Author: Jan Kiszka <jan.kis...@siemens.com> > Date: Tue Aug 2 16:10:21 2011 +0200 > > Avoid allocating TCG resources in non-TCG mode > > Do not allocate TCG-only resources like the translation buffer when > running over KVM or XEN. Saves a "few" bytes in the qemu address space > and is also conceptually cleaner. > > Signed-off-by: Jan Kiszka <jan.kis...@siemens.com> > Signed-off-by: Anthony Liguori <aligu...@us.ibm.com> > > > It turns out that the init of the tb cache is now moved to before ram_size > gets it's default value. And because the default tb cache size, if no > -tb-size option is given, is based on the ram_size it is now zero..
Yes, already stumbled over that regression myself. See http://thread.gmane.org/gmane.comp.emulators.qemu/113547 Jan
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