immense delayed write to file system (ZFS and UFS2), performance issues

Daniel O'Connor doconnor at
Tue Jan 19 02:20:37 UTC 2010

On Tue, 19 Jan 2010, Morgan Wesström wrote:
> The disks involved don't happen to be Western Digital Green Power
> disks, do they? The Intelli-Park function in these disks are wrecking
> havoc with I/O in Linux-land at least, causing massive stalls and
> iowait through the roof during the 25-30 seconds it takes for the
> heads to unload after parking. I have two of these disks sitting on
> my desk now collecting dust...

There's this..

and you can get the tool at..

I am planning to try this out tonight..

Daniel O'Connor software and network engineer
for Genesis Software -
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 188 bytes
Desc: This is a digitally signed message part.
Url :

More information about the freebsd-questions mailing list