On Tue, Jul 15, 2008 at 7:01 PM, Richard Scobie <richard@xxxxxxxxxxx> wrote: > Keld Jørn Simonsen wrote: > >> I would actually welcome more tests with specific user profiles, like >> many small reads and writes for database use, and concurrent random >> reading and writing to simulate the load on a server. What bonnie++ is >> reporting is only equential IO. This is important on work stations, but >> actually not on servers. > > The following is from the Bonnie++ man page: > > "There are two sections to the program's operations. The first is to > test the IO throughput in a fashion that is designed to simulate some > types of database applications. The second is to test creation, reading and > deleting many small files in a fashion similar to the usage patterns of > programs such as Squid or INN." > > So I guess the author thinks it's valid for more than sequential I/O. > > In any case, while we may be in a minority, Justin, I and a few others are > interested in sequential I/O, as we build servers required to read and write > multiple streams of uncompressed SD and HD video in realtime. In that case, the 'fstest' program (google for it, it's associated with the samba folks IIRC), might be just the ticket. You specify the number of children (real children, not threads), the number of files each child will open, populate, verify, and then delete, the size of the files, and a few other options. It very nicely simulates a set of totally greedy I/O intensive processes. -- Jon -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
