Possible ZFS patch, please test!
hlh at restart.be
Sun Aug 31 08:49:51 UTC 2008
Jeremy Chadwick wrote:
> On Sat, Aug 30, 2008 at 09:28:36PM +0200, Henri Hennebert wrote:
>> John Baldwin wrote:
>>> This patch merges a few changes from HEAD back to 7.x. I think the
>>> endian changes specifically might solve the issue people saw with
>>> zpools created with non-dtrace kernels not being readable by dtrace
>>> kernels and vice versa.
>> Just a follow-up
>> I cvsup at Sat Aug 30 12:55 without zfs_7.patch and
>> make buildworld && make buildkernel && make installkernel
>> reboot (-s) --root on zfs is ok -- make installworld
>> System is still sluggish even during the make installworld in single user.
> Sorry if I've missed this, but what tuning have you done for ZFS? Some
> of us (most of us?) have seen fairly "sluggish" performance when
> prefetch is enabled (the default), while the system is generally more
> responsive when prefetch is disabled.
prefetch is enabled:
> This may have nothing to do with the problem you've stated, but I
> thought I'd throw it out there.
I think that the problem is somewhere else because >80% of system cpu on
a dual core seems awfully bad - eg more than 20 seconds to open this
response after clicking on the response button.
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