On 18 Jun 2001 13:14:03 +0000, Garry Steedman wrote:
Hi Oliver,
interesting article at:
http://www.sysadminmag.com/articles/2001/0107/0107a/0107a.htm
which (in part) addresses your questions. i quote:
"Our benchmarks demonstrate a 12x performance difference between process-based and asynchronous task architectures. Significantly, we found up to a 75% overall performance difference between OSes when using the most efficient asynchronous architecture. We found Linux to be the best performing operating system based on our metrics, performing 35% better than Solaris, which came in second, followed by Windows, and finally, FreeBSD."
the 2GB file size limit is not an OS limit on linux: it is a limit on the Ext2 file system. several journalling file systems for linux offer max. file sizes beyond 2GB (at least in theory). check out reiserfs, xfs etc.
*sigh* The 2Gb file size limit was a problem with the Linux kernel 2.2 and below VFS. it is NOT a limit of a particular filesystem. XFS Rocks. I have a number of production and file system stress machines running it at work (where I do heavy Filesystem testin on Linux a spart of my job). ReiserFS is fine to, though between XFS and ResierFS for a Data.fs 9hehe) I would choose XFS. On a 32bit intel system, using XFS, you won't have to worry about siz elimitations until your filesize is ~16 terabytes. someting tells me you will have other things to worry about long before that. JFS for Linux is not ready for prime time. Ext2 on kenrel >= 2.4.0 will be fine (otehr than long fsck times when that happens). File size ther eis likewise in the terabyte range. For performance, I would recommend XFS on Linux v2.45 or higher (preferable 6 when it comes out, there will be an important patch i expect to be in) To give a rough idea of filesystem performance of XFS (BTw, this is the only journalling filesystem for Linux that is past the beta stage): Format a 13.7 GB partition: .133 seconds (yes, the decimal is in the right place!) Fill it with a single DD command until filesystem full: 18.9 minutes Above with 4 paralell dd commands: 10 minutes Delete files that fil up said 13.7 Gb partition: 1.2 seconds. There is no 'in theory' involved with suprassing a 2Gb filesize on Linux kernel version >= 2.4. It works. I've verified it. Repeatedly. In fact, tomorrow I shall be doing multiple terabyte sized files. Again. There are other, far more important, things to consider than this, when choosing a platform four your zope. Bill