Petr Benes wrote: >> That leaves unanswered the underlying question: why do you need to do >> this at all? Isn't the ZFS ARC supposed to release memory when the >> system is under pressure? Is that mechanism not working well in some >> cases ... ? > > http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6522017 > > " ... Even if the ZFS ARC subsequently frees memory, the kernel cage does > not shrink. It cannot shrink, because pages from the ZFS ARC were > interspersed with other kernel pages, so the free space in the > physical address range of the cage is fragmented when the ZFS pages > are released. The remaining kernel pages cannot be moved to compress > the cage, as kernel memory inside the cage is not relocatable. ..."
Sure ... but that refers specifically to DR-related issues, and that's not what the original poster complained about. His original message said that he was having trouble with a large application (Oracle Fusion) running on a system using ZFS. Does Fusion really need contiguous kernel memory (why?) or is there something else going on here? -- James Carlson 42.703N 71.076W <carls...@workingcode.com> _______________________________________________ zones-discuss mailing list email@example.com