I ran a basic postmark today and the results are below for the btrfs code on a Seagate Constellation drive I have for testing. If any of the the btrfs developers read the kernel newbies list, please send me a list of tests with docs on how to run them on this drive ,I don't care about killing it :) and also since it's an enterprise drive, you can test enterprise tests if wanted. Nick Creating files...Done Performing transactions..........Done Deleting files...Done Time: 11 seconds total 10 seconds of transactions (10000 per second) Files: 50516 created (4592 per second) Creation alone: 500 files (500 per second) Mixed with transactions: 50016 files (5001 per second) 49827 read (4982 per second) 49581 appended (4958 per second) 50516 deleted (4592 per second) Deletion alone: 532 files (532 per second) Mixed with transactions: 49984 files (4998 per second) Data: 301.18 megabytes read (27.38 megabytes per second) 304.49 megabytes written (27.68 megabytes per second)