On Dec 10, 2005, at 2:16 PM, Kris Kennaway wrote:
But anyway, FreeBSD 6.0 is hugely superior to 5.4 and 4.11 in filesystem performance. I have been measuring this carefully for the past couple of months and hope to have the paper out soon.
For instance in 5.4 the fastest I could write to my /usr/ partition on a simple default-partitioned UDMA100 drive was 16 MB/sec with a 2.8 GHz P4 while it was capable of reading at over 40 MB/sec. Saw RELENG_6 writing on that partition at over 40 MB/sec recently. Unscientific tests using "systat -v" and moving big files.
A gvinum striped volume on two SATA150 drives routinely produces 70 MB/sec reads and writes.
Its nice that FreeBSD is now close to the hardware's performance. One nit is that with such a large sustained access other small accesses are starved. Probably a scheduler issue, and I'm sure the scheduler is being worked on.
-- David Kelly N4HHE, [EMAIL PROTECTED] ======================================================================== Whom computers would destroy, they must first drive mad. _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
