>-----Original Message----- >From: [email protected] >[mailto:[email protected]] On >Behalf Of Benjamin Herrenschmidt >Sent: Friday, July 02, 2010 1:47 PM >To: Tabi Timur-B04825 >Cc: Linuxppc-dev Development >Subject: Re: CONFIG_NO_HZ causing poor console responsiveness > >On Tue, 2010-06-29 at 14:54 -0500, Timur Tabi wrote: >> I'm adding support for a new e500-based board (the P1022DS), and in >> the process I've discovered that enabling CONFIG_NO_HZ (Tickless >> System / Dynamic Ticks) causes significant responsiveness problems on >> the serial console. When I type on the console, I see delays of up to >> a half-second for almost every character. It acts as if there's a >> background process eating all the CPU. >> >> I don't have time to debug this thoroughly at the moment. The problem >> occurs in the latest kernel, but it appears not to occur in 2.6.32. >> >> Has anyone else seen anything like this? > >I noticed that on the bimini with 2.6.35-rc* though I didn't get to track >it down yet.
Patch found at the following location fixed this problem. http://www.spinics.net/lists/linux-tip-commits/msg08279.html Hope it has already been merged. - Leo _______________________________________________ Linuxppc-dev mailing list [email protected] https://lists.ozlabs.org/listinfo/linuxppc-dev
