Messages in this thread | | | From | (H. Peter Anvin) | Subject | Re: GGI Project Unhappy On Linux | Date | 29 Mar 1998 01:54:55 GMT |
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Followup to: <Pine.LNX.3.95.980329022921.12876D-100000@ferret.lmh.ox.ac.uk> By author: Chris Evans <chris@ferret.lmh.ox.ac.uk> In newsgroup: linux.dev.kernel > > Initially if we just aimed for mode switching in the kernel, maybe. Mode > switching is very infrequent, and certainly not time critical. No-one is > going to notice the extra overhead of an ioctl(). > > But yes if accel requests get handled by the kernel we need to coalesce > requests in userspace and transfer multiple commands to kernel space per > syscall. >
Don't forget, though, the high cost of kernel memory (although kmod/kerneld helps with that aspect if performance isn't an issue.)
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