On Sat, 4 Jul 2009, Phil Harman wrote:
However, this is only part of the problem. The fundamental issue is that ZFS has its own ARC apart from the Solaris page cache, so whenever mmap() is used, all I/O to that file has to make sure that the two caches are in sync. Hence, a read(2) on a file which has sometime been mapped, will be impacted, even if the file is nolonger mapped.
However, it seems that memory mapping is not responsible for the problem I am seeing here. Memory mapping may make the problem seem worse, but it is clearly not the cause.
Bob -- Bob Friesenhahn bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
