Hello, I have some questions about zfs and its use of memory and caching.
We recently just went production with a new system. We scaled back our use of zfs dramatically on the new system. We were going to have user home directories be ZFS files systems, but found that the shutdown and startup times were to long with 15,0000 ZFS file systems. We decided to just use ZFS filesystems for departmental shares. We have about 450 ZFS file systems on the system. It is a V890 with 16 GB of memory. What we noticed yestersday is that the kernel is using 80% of the memory. Found this out by using mdb -k and then issuing ::memstat. In the documentation that I found, it said to allocate 1GB of memory for every 1000 ZFS filesystems. Is ZFS caching information about each file accessed in memory? Will it release memory when another application needs it? Just trying to figure out why the Kernel memory is so large. Thanks for your help, Gary This message posted from opensolaris.org _______________________________________________ opensolaris-discuss mailing list [email protected]
