Re: [zfs-discuss] Help me understand ZFS caching

2007-04-20 Thread Roch - PAE
Tony Galway writes: > I have a few questions regarding ZFS, and would appreciate if someone > could enlighten me as I work my way through. > > First write cache. > We often use write cache to designate the cache present at the disk level. Lets call this "disk write cache". Most FS will c

[zfs-discuss] Help me understand ZFS caching

2007-04-20 Thread Tony Galway
I have a few questions regarding ZFS, and would appreciate if someone could enlighten me as I work my way through. First write cache. If I look at traditional UFS / VxFS type file systems, they normally cache metadata to RAM before flushing it to disk. This helps increase their perceived write