On (02/02/16 15:59), Kirill A. Shutemov wrote: > > > On Sat, Jan 23, 2016 at 03:57:21PM +0000, Hugh Greenberg wrote: > > > > Kirill A. Shutemov <kirill <at> shutemov.name> writes: > > > > > > > > > > Could you try to insert > > "late_initcall(set_recommended_min_free_kbytes);" > > > > > back and check if makes any difference. > > > > > > > > > > > > > We tested adding late_initcall(set_recommended_min_free_kbytes); > > > > back in 4.1.14 and it made a huge difference. We aren't sure if the > > > > issue is 100% fixed, but it could be. We will keep testing it. > > > > > > It would be nice to have values of min_free_kbytes before and after > > > set_recommended_min_free_kbytes() in your configuration. > > > > > > > Before adding set_recommended_min_free_kbytes: 5391 > > After: 67584 > > [ add more people to the thread ] > > The 'before' value look low to me for machine with 2G of RAM. > > In the bugzilla[1], you've mentioned zram. I wounder if we need to > increase min_free_kbytes when zram is in use as we do for THP. > > [1] https://bugzilla.kernel.org/show_bug.cgi?id=110501 [add Seth Jennings] additional info: http://marc.info/?l=linux-mm&m=145373987224270 > The reports are coming from 2GB Haswell chromebooks. I have a 4GB haswell > chromebook and I cannot reproduce the issue, even if I boot the kernel with > 2GB or less. > > After more testing, we were still able to reproduce the issue. It seems to > have taken longer to show up this time. a small note, I assume, IF min_free_kbytes must be set then probably in zsmalloc (zbud?) init, not in zram. zswap can use both -- zsmalloc and zbud. -ss -- 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>