By all means please try it to validate it yourself and post your results from hour one, day one and week one. In a ZIL use case, although the data set is small it is always writing a small ever changing (from the SSDs perspective) data set. The SSD does not know to release previously written pages and without TRIM there is no way to tell it to. That means every time a ZIL write happens, new SSD pages are consumed. After some amount of time, all of those empty pages will become consumed and the SSD will now have to go into the read-erase-write cycle which is incredibly slow and the whole point of TRIM.
I can assure you from my extensive benchmarking with all major SSDs in the role of a ZIL you will eventually not be happy. Depending on your use case it might take months, but eventually all those free pages will be consumed and read-erase-write is how the SSD world works after that - unless you have TRIM, which we don't yet. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
