Well I've just managed to disable it. Seems the problem was TRANSPARENT_HUGEPAGE flag which selected COMPACTION which selects MIGRATION. Great :) thanks p.s. sorry for the double e-mail, didn't mean to be mean :<
On 07/11/2017 05:47 PM, Henning Schild wrote: > Am Tue, 11 Jul 2017 14:50:15 +0000 > schrieb Simone Zucchi <[email protected]>: > >> Hello everybody, >> I hope I won't be considered a spammer because of 2 mails in half an >> hour :) I couldn't really find any doc about CONFIG_MIGRATION flag >> and how it could worsen latency over Xenomai. > Well if the linux-kernel is busy moving memory around, other load - > like realtime threads - might have to wait for that to finish. I would > not be too worried about it. > >> I wanted to disable it, just to be sure, but I can't really work it >> out. http://cateee.net/lkddb/web-lkddb/MIGRATION.html shows relative >> dependencies about it but even disabling all of them I can't disable >> it. Could I please attach my .config in this mailing list willing for >> help? > If you have a closer look you will also see > Selected by: COMPACTION [=y] && MMU [=y] || CMA [=n] && HAVE_MEMBLOCK > [=y] && MMU [=y] > That information can be seen i.e. in "make menuconfig". From there find > a way to break the chain that is pulling it in. I guess MMU should stay > enabled, so COMPACTION and its "Selected by"s. > > Henning > >> Thanks in advance, >> >> Simone >> _______________________________________________ >> Xenomai mailing list >> [email protected] >> https://xenomai.org/mailman/listinfo/xenomai _______________________________________________ Xenomai mailing list [email protected] https://xenomai.org/mailman/listinfo/xenomai
