On 2012-01-19 15:19, Xin Li wrote:
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On 01/19/12 13:22, Matt Connor wrote:
On 19.01.2012 13:15, Nick Sayer wrote:
I have a VPS at rootbsd.net, and have been running 8.2-RELEASE
with a XENHVM kernel with a patch to fix the 'do something smart'
panic in if_xn. I fetched the 9.0-RELEASE source tree and built a
kernel to try and it worked without any muss or fuss. I did the
rest of the upgrade and it's working just fine, so far as I can
And there was much
Same here at ssdnodes.com - we pulled the new source tree, rebuilt
with our modified XENHVM and haven't had any issues so far.
We had many tweaks in /etc/sysctl.conf to improve throughput for
the 8.2-RELEASE, the 9.0-RELEASE systems still remained snappy
after the tweaks were removed.
What kinds of tweaks are needed? (i.e. should we make them the
The tweaks were only "needed" because we were trying to achieve a
specific network throughput in our particular workload (read: turning
the knob all the way until it broke off). These values are no longer in
production on version 9.0-RELEASE, I highly recommend these never become
For your amusement, I've included the values below:
# ZFS tuning parameters
# We're running on top of a hardware battery-backed RAID controller,
therefore disable cache flush
# Recommends not setting a kmem limit and increasing arc
# Drive tweaks
# not having this will cause the system to be very sluggish during file
I/O as well as hanging during the nightly cron jobs
# Kernel Tuning
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