Re: [PATCH] mos6522: fix T1 and T2 timers

2019-11-03 Thread Mark Cave-Ayland
On 02/11/2019 15:49, Laurent Vivier wrote: > With the Quadra 800 emulation, mos6522 timers processing can consume > until 70% of the host CPU time with an idle guest (I guess the problem > should also happen with PowerMac emulation). > > On a recent system, it can be painless (except if you look

Re: [PATCH] mos6522: fix T1 and T2 timers

2019-11-03 Thread David Gibson
On Sat, Nov 02, 2019 at 04:49:19PM +0100, Laurent Vivier wrote: > With the Quadra 800 emulation, mos6522 timers processing can consume > until 70% of the host CPU time with an idle guest (I guess the problem > should also happen with PowerMac emulation). > > On a recent system, it can be painless

[PATCH] mos6522: fix T1 and T2 timers

2019-11-02 Thread Laurent Vivier
With the Quadra 800 emulation, mos6522 timers processing can consume until 70% of the host CPU time with an idle guest (I guess the problem should also happen with PowerMac emulation). On a recent system, it can be painless (except if you look at top), but on an old host like a PowerMac G5 the gue