DragonFly users List (threaded) for 2006-07
Re: disk diagnostics
Simon 'corecode' Schubert wrote:
Bill Hacker wrote:
Warren Hull 25 minutes delay comes in, and I/O tuning doesn't cover
that. Too big a number for where it is being reported as happening.
Either something else - probably something *basic* but simply
overlooked - is placing demands on that storage system, or the
'problem' has been misreported.
softupdates? writing meta data with sync will be really slow.
No, not *that* slow, not even on K6-2-500 with 256 MB of SDRAM, where I have
done it on a production FreeBSD 4.8 web & mx box for donkey's years (too small
to hold a RAID). DFLY may not have focused on that area, but should not be 2 or
3 orders of magnitude slower than 4.9/4.9 BSD.
Especially not that slow on a scripted dirtree rm -Rf
I'd want to see what is in the ~/messages and other logs, (rampant I/O errors?),
what, if anything was mounted from the CD's, where mounted, and what the path
was at the time - likewise RAMDISK and if df showed one or more mounts
at/near/over 100%+ of capacity, memory and swap stats.... etc. The 'usual
The time involved hints at CD's being spun up, paths searched, found not to
contain <whatever>, rewind.... or some partition being pushed over 100%
temporarily. Folsks cramming multiple OS test installs onto media all too rarely
pay attention to temporary needs. The 8+ GB needed for building OpenOffice from
source caught even this old dog flatfooted, for example.
Otherwise, ATA I/O is too 'universal' in use to hide a DFLY bug of such
magnitude for very long, so the paucity of related reports says it is a local