Re: When will ZFS become stable?

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From: Ivan Voras
Date: Sunday, January 6, 2008 - 9:45 am

Kris Kennaway wrote:


This looks like we're constantly chasing the "right amount". Does it=20
depend so much on CPU and IO speed that there's never a generally=20
sufficient "right amount"? So when CPU and drive speed increase, the new =

amount will always be some bigger value?


Where? What else is there except kmem tuning (including KVA_PAGES)? IIRC =

Pawel said all other suggested tunings don't do much.


My point is that the fact that such things are necessary (1.5 GB KVA os=20
a lot on i386) mean that there are serious problems which aren't getting =

fixed since ZFS was imported (that's over 6 months ago).

I see you've added to http://wiki.freebsd.org/ZFSTuningGuide; can you=20
please add the values that work for you to it (especially for KVA_PAGES=20
since the exact kernel configuration line is never spelled out in the=20
document; and say for which hardware are the values known to work)?

o=20

I know it's experimental, but requiring users to perform so much tuning=20
just to get it work without crashing will mean it will get a bad=20
reputation early on. Do you (or anyone) know what are the reasons for=20
not having vm.kmem_size to 512 MB by default? Better yet, why not=20
increase both vm.kmem_size and KVA_PAGES to (the equivalent of) 640 MB=20
or 768 MB by default for 7.0?

 >Users of 7.0-RELEASE should not have unrealistic
 > expectations.

As I've said at the first post of this thread: I'm interested in if it's =

ever going to be stable for 7.x.
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Messages in current thread:
When will ZFS become stable?, Ivan Voras, (Fri Jan 4, 4:42 am)
Re: When will ZFS become stable?, Brooks Davis, (Fri Jan 4, 9:33 am)
Re: When will ZFS become stable?, Ivan Voras, (Fri Jan 4, 10:58 am)
Re: When will ZFS become stable?, Brooks Davis, (Fri Jan 4, 11:12 am)
Re: When will ZFS become stable?, Peter Schuller, (Sun Jan 6, 2:51 am)
Re: When will ZFS become stable?, Ivan Voras, (Sun Jan 6, 5:58 am)
Re: When will ZFS become stable?, Kris Kennaway, (Sun Jan 6, 6:07 am)
Re: When will ZFS become stable?, Maciej Suszko, (Sun Jan 6, 6:46 am)
Re: When will ZFS become stable?, Ivan Voras, (Sun Jan 6, 6:50 am)
Re: When will ZFS become stable?, Kris Kennaway, (Sun Jan 6, 7:27 am)
Re: When will ZFS become stable?, Ivan Voras, (Sun Jan 6, 7:51 am)
Re: When will ZFS become stable?, Kris Kennaway, (Sun Jan 6, 8:08 am)
Re: When will ZFS become stable?, Robert Watson, (Sun Jan 6, 8:36 am)
Re: When will ZFS become stable?, Kris Kennaway, (Sun Jan 6, 8:46 am)
Re: When will ZFS become stable?, Henri Hennebert, (Sun Jan 6, 8:48 am)
Re: When will ZFS become stable?, Kris Kennaway, (Sun Jan 6, 9:03 am)
Re: When will ZFS become stable?, Maciej Suszko, (Sun Jan 6, 9:05 am)
Re: When will ZFS become stable?, Kris Kennaway, (Sun Jan 6, 9:22 am)
Re: When will ZFS become stable?, Ivan Voras, (Sun Jan 6, 9:45 am)
Re: When will ZFS become stable?, Henri Hennebert, (Sun Jan 6, 9:47 am)
Re: When will ZFS become stable?, Ivan Voras, (Sun Jan 6, 9:47 am)
Re: When will ZFS become stable?, Robert Watson, (Sun Jan 6, 10:08 am)
Re: When will ZFS become stable?, Kris Kennaway, (Sun Jan 6, 10:12 am)
Re: When will ZFS become stable?, Kris Kennaway, (Sun Jan 6, 10:13 am)
Re: When will ZFS become stable?, Kris Kennaway, (Sun Jan 6, 10:20 am)
Re: When will ZFS become stable?, Ivan Voras, (Sun Jan 6, 10:20 am)
Re: When will ZFS become stable?, Ivan Voras, (Sun Jan 6, 10:28 am)
Re: When will ZFS become stable?, Kris Kennaway, (Sun Jan 6, 10:34 am)
Re: When will ZFS become stable?, Ivan Voras, (Sun Jan 6, 10:36 am)
Re: When will ZFS become stable?, Kris Kennaway, (Sun Jan 6, 10:43 am)
Re: When will ZFS become stable?, Ivan Voras, (Sun Jan 6, 11:00 am)
Re: When will ZFS become stable?, Kris Kennaway, (Sun Jan 6, 11:09 am)
Re: When will ZFS become stable?, Kris Kennaway, (Sun Jan 6, 11:10 am)
Re: When will ZFS become stable?, Gary Corcoran, (Sun Jan 6, 11:48 am)
Re: When will ZFS become stable?, Ivan Voras, (Sun Jan 6, 11:49 am)
Re: When will ZFS become stable?, Maciej Suszko, (Sun Jan 6, 12:56 pm)
Re: When will ZFS become stable?, Claus Guttesen, (Sun Jan 6, 1:00 pm)
Re: When will ZFS become stable?, Vadim Goncharov, (Sun Jan 6, 1:56 pm)
ZFS honesty, Scott Long, (Sun Jan 6, 2:00 pm)
Re: ZFS honesty, Kris Kennaway, (Sun Jan 6, 2:32 pm)
Re: When will ZFS become stable?, Kris Kennaway, (Sun Jan 6, 2:42 pm)
Re: ZFS honesty, Scott Long, (Sun Jan 6, 2:54 pm)
Should we simply disallow ZFS on FreeBSD/i386?, Maxim Sobolev, (Sun Jan 6, 2:56 pm)
Re: ZFS honesty, 韓家標 Bill Hacker, (Sun Jan 6, 3:20 pm)
Re: ZFS honesty, 韓家標 Bill Hacker, (Sun Jan 6, 3:32 pm)
Re: ZFS honesty, Ivan Voras, (Sun Jan 6, 3:33 pm)
Re: When will ZFS become stable?, Robert Watson, (Sun Jan 6, 3:33 pm)
Re: ZFS honesty, Ivan Voras, (Sun Jan 6, 3:43 pm)
Re: When will ZFS become stable?, Ivan Voras, (Sun Jan 6, 3:45 pm)
Re: ZFS honesty, 韓家標 Bill Hacker, (Sun Jan 6, 3:58 pm)
Re: Should we simply disallow ZFS on FreeBSD/i386?, Adam McDougall, (Sun Jan 6, 4:32 pm)
Re: Should we simply disallow ZFS on FreeBSD/i386?, Erich Dollansky, (Sun Jan 6, 4:39 pm)
Re: ZFS honesty, Alexandre "Sunny" Ko ..., (Sun Jan 6, 5:03 pm)
Re: Should we simply disallow ZFS on FreeBSD/i386?, Maxim Sobolev, (Sun Jan 6, 5:58 pm)
Re: ZFS honesty, Ivan Voras, (Sun Jan 6, 6:16 pm)
Re: ZFS honesty, 韓家標 Bill Hacker, (Sun Jan 6, 7:29 pm)
Re: Should we simply disallow ZFS on FreeBSD/i386?, Christian Walther, (Mon Jan 7, 12:10 am)
Re: Should we simply disallow ZFS on FreeBSD/i386?, Igor Mozolevsky, (Mon Jan 7, 1:20 am)
Re: Should we simply disallow ZFS on FreeBSD/i386?, Christian Walther, (Mon Jan 7, 1:51 am)
Re: When will ZFS become stable?, Pawel Jakub Dawidek, (Mon Jan 7, 2:59 am)
Re: When will ZFS become stable?, Ivan Voras, (Mon Jan 7, 3:30 am)
Re: When will ZFS become stable?, Igor Mozolevsky, (Mon Jan 7, 6:17 am)
Re: When will ZFS become stable?, Dag-Erling Smørgrav, (Mon Jan 7, 7:04 am)
Re: When will ZFS become stable?, Ivan Voras, (Mon Jan 7, 7:37 am)
Re: Should we simply disallow ZFS on FreeBSD/i386?, Joao Barros, (Mon Jan 7, 7:52 am)
Re: When will ZFS become stable?, Vadim Goncharov, (Mon Jan 7, 8:16 am)
Re: ZFS honesty, Alexandre Biancalana, (Mon Jan 7, 8:23 am)
Re: Should we simply disallow ZFS on FreeBSD/i386?, Bernd Walter, (Mon Jan 7, 8:36 am)
Re: When will ZFS become stable?, Robert Watson, (Mon Jan 7, 8:39 am)
Re: Should we simply disallow ZFS on FreeBSD/i386?, Peter Schuller, (Mon Jan 7, 10:06 am)
Re: When will ZFS become stable?, Andrew Thompson, (Mon Jan 7, 1:46 pm)
Re: Should we simply disallow ZFS on FreeBSD/i386?, Alexander Kabaev, (Mon Jan 7, 3:47 pm)
Re: When will ZFS become stable?, Vadim Goncharov, (Mon Jan 7, 4:28 pm)
Re: When will ZFS become stable?, Robert Watson, (Mon Jan 7, 4:39 pm)
Re: Should we simply disallow ZFS on FreeBSD/i386?, David Taylor, (Tue Jan 8, 12:56 am)
Re: When will ZFS become stable?, Robert Watson, (Tue Jan 8, 2:19 am)
Re: Should we simply disallow ZFS on FreeBSD/i386?, Oliver Fromme, (Tue Jan 8, 10:51 am)
Re: When will ZFS become stable?, Oliver Fromme, (Tue Jan 8, 10:58 am)
Re: When will ZFS become stable?, Steve Kargl, (Tue Jan 8, 10:59 am)
Re: When will ZFS become stable?, Dag-Erling Smørgrav, (Tue Jan 8, 11:24 am)
Re: When will ZFS become stable?, Vadim Goncharov, (Tue Jan 8, 11:58 am)
Re: When will ZFS become stable?, Robert Watson, (Tue Jan 8, 12:22 pm)
Re: When will ZFS become stable?, Ivan Voras, (Tue Jan 8, 4:16 pm)
Re: When will ZFS become stable?, Dan Nelson, (Tue Jan 8, 10:45 pm)
Re: ZFS honesty, Andrew Gallatin, (Wed Jan 9, 6:23 am)
Re: ZFS honesty, Alexandre "Sunny" Ko ..., (Wed Jan 9, 7:55 am)
Re: ZFS honesty, Andrew Gallatin, (Wed Jan 9, 8:36 am)
Re: When will ZFS become stable?, Scot Hetzel, (Wed Jan 9, 10:39 am)
Re: When will ZFS become stable?, Mark Powell, (Sat Jan 12, 2:45 pm)
Re: When will ZFS become stable?, Darren Reed, (Tue Jan 22, 8:09 am)