Messages in this thread | | | Date | Tue, 27 Jul 1999 01:24:03 +0200 | From | Artur Skawina <> | Subject | Re: [patch] lowlatency-2.3.12-A0, sound, multimedia performance, etc. |
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Ingo Molnar wrote: > > (and everybody else having sound problems under high load) try the > attached patch? > > It dramatically reduces sound skipping here:
> +++ linux/include/asm-i386/uaccess.h Sat Jul 24 00:55:48 1999 > + if (current->need_resched) schedule(); \
this patch causes processes writing to the console to sometimes get stuck in __generic_copy_from_user. I finally managed to reproduce this; n_tty.c:write_chan() sets current->state to TASK_INTERRUPTIBLE before copy_to_user gets called. [sys_write->tty_write->write_chan->opost_block->copy_from_user]
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