On Thu, 02 Nov 2017 10:09:51 +0100, Kirill A. Shutemov wrote: > > On Thu, Nov 02, 2017 at 09:23:58AM +0100, Takashi Iwai wrote: > > > > Currently the least ALSA timer interrupt period is limited to 1ms. > > Does it still too much? > > > > Can the reproducer triggers it reliably? If yes, could you forward > > it, too (and config as well), so that I'll try to dig down more exact > > code paths? > > All of that is part of original report: > > http://lkml.kernel.org/r/94eb2c19df188b1926055cf13c21@xxxxxxxxxx > > marc.info hasn't stored repro.c for some reasone. Attached. > > I've just check it reproduces reliably for me in KVM. > > I also checked that it's not specific to THP -- still trigirable with huge > pages disabled. I guess this is the same issue Jerome forwarded recently, and it was fixed by limiting the amount of ALSA timer instances. I queued the fix in sound git tree for-linus branch, commit 9b7d869ee5a77ed4a462372bb89af622e705bfb8 ALSA: timer: Limit max instances per timer It'll be likely included in 4.14 final. thanks, Takashi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
