On Jan 22, 2008, at 5:39 PM, manoj nayak wrote: >> >> Manoj Nayak writes: >>> Hi All, >>> >>> If any dtrace script is available to figure out the vdev_cache (or >>> software track buffer) reads in kiloBytes ? >>> >>> The document says the default size of the read is 128k , However >>> vdev_cache source code implementation says the default size is 64k >>> >>> Thanks >>> Manoj Nayak >>> >> >> Which document ? It's 64K when it applies. >> Nevada won't use the vdev_cache for data block anymore. > > How readahead or software track buffer is going to used in Navada > without > vdev_cache ? Any pointer to documents regarding that ?
The vdev cache is still used - just for metadata. See: http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/ common/fs/zfs/vdev_cache.c#35 http://blogs.sun.com/erickustarz/entry/vdev_cache_improvements_to_help eric _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
