> On Oct 5, 2009, at 6:05 PM, Dieter wrote:
>
>> In message , Thomas
>> Backman writes:
>>
>>> I run 8.0-RC1/amd64 with ZFS on an A64 3200+ with 2GB RAM and an old
>>> 80GB 7200rpm disk.
>>>
>>> My problem is that I get completely unacceptable latency on console IO
>>> (both via SSH and serial console) when the system is performing disk
>>> IO. The worst case I've noticed yet was when I tried copying a core
>>> dump from a lzjb compressed ZFS file system to a gzip-9 compressed
>>> one, to compare the file size/compression ratio. screen(1) took at
>>> LEAST ten seconds - probably a bit more - I'm not exaggerating here -
>>> to switch to another window, and an "ls" in an empty directory also
>>> about 5-10 seconds.
>>
>> You might find the "RELENG_7 heavy disk = system crawls" thread
>> interesting:
>>
>> } I didn't actually solve it or do anything.
>> } I just upgraded to RELENG_8.
>> }
>> } Now it's behaving more like FreeBSD should.
>> } I can do sequential reads/writes and still
>> } use kbd/mouse/X11/buildworld and so on.
>
> Doesn't really help much I'm afraid, since 8.0-RC1 = RELENG_8 =
> stable/8. Been running current/stable-8 since May.
>
> Regards,
> Thomas
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