On Mon, 22 Oct 2012, Andrew Morton wrote: > On Mon, 22 Oct 2012 21:45:02 +0200 > Julian Wollrath <julian.wollr...@stud.uni-goettingen.de> wrote: > > > Hello, > > > > seems like I found the other bad commit. Everything, which means > > v3.7-rc*, works fine again with commit e6c509f85 (mm: use > > clear_page_mlock() in page_remove_rmap()) and commit 957f822a0 (mm, > > numa: reclaim from all nodes within reclaim distance) revoked. > > Thanks. Let's add some cc's. Can you please describe your workload > and some estimate of the slowdown?
I'm currently assuming that my clear_page_mlock() commit is innocent of this: it went in just two before David's numa reclaim commit, and I don't see how mine could have any such marked effect: I'm thinking it was just a bisection hiccup that implicated it. Julian (or Patrik), what do you find if you revert the numa reclaim commit but leave in the clear_page_mlock commit? Or vice versa. Whereas David's numa reclaim distance commit does look suspicious to me: as I read it (perhaps wrongly), zone_reclaim_mode would previously have stayed 0 if all nodes were close or equidistant (e.g. CONFIG_NUMA=y on a non-NUMA machine), but now it would be 1 in this case, invoking zone_reclaim() more frequently than before. Hugh > > Patrik has also seen this and his description is > > : I'm using an Asus Zenbook UX31E and have been installing all RCs in > : hope of improving the Wireless and Touchpad functionality. > : However, when trying 3.7 (rc1 and now rc2) I have major performance issues. > : > : Easiest way to reproduce is to launch and play a game like Nexuiz, > : where the computer will lag, stutter and freeze until the machine is > : unresponsive within a couple of minutes. > : But an easy workload like browsing will also cause lags when switching > : tabs or redrawing a web page after a tab switch. > : Basically 3.7 is unusable for this machine. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
