On 9/28/06, Vic Engle <[EMAIL PROTECTED]> wrote:
Hello,
I've been looking into trying to optimise SFS related tunables and found that
one
of the previously tunable parameters, ssd_retry_count, is not available in
Solaris
10 update2. When I try to set this parameter in /etc/system I get a message
during
boot saying that ssd_retry_count is being ignored because it is not in the ssd
module. Has the parameter been renamed or is retry_count no longer tunable
system wide for the ssd module?
Also, would anyone be willing to share values that may have worked well in
your environment for fast fabric attached storage? I am especially interested
in the following parameters but would appreciate any others you feel are
related and useful.
set ssd:ssd_io_time=
set ssd:ssd_retry_count=
set ssd:ssd_max_throttle=
set fp:fp_offline_ticker=
set fp:fp_retry_count=
One other question; are all these same parameters adjustable for the sd driver
on x86 systems?
Hi Vic,
try setting sd:sd_io_time, sd:sd_retry_count and sd:sd_max_throttle instead.
That is, *IF* if you are absolutely sure that this is the right thing
to do and you totally
understand how these variables are used in Solaris 10.
You cannot - yet (wait for an s10 update) set the fp_offline_ticker.
The fp_retry_count
is a fixed value and unlikely to be changed.
My question to you is, why do you think that you need to tune these variables?
What assumptions do you have about the behaviour of the Solaris san stack in
Solaris 10?
cheers,
James C. McPherson
--
Solaris kernel software engineer, system admin and troubleshooter
http://www.jmcp.homeunix.com/blog
Find me on LinkedIn @ http://www.linkedin.com/in/jamescmcpherson
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