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Date:      Sat, 23 Aug 2014 19:06:39 -0500
From:      Larry Rosenman <ler@lerctr.org>
To:        Steven Hartland <killing@multiplay.co.uk>
Cc:        freebsd-fs@freebsd.org, bugzilla-noreply@freebsd.org, owner-freebsd-fs@freebsd.org
Subject:   Re: [Bug 187594] [zfs] [patch] ZFS ARC behavior problem and fix
Message-ID:  <b4e146f7dabf4fd1da9d4bb563d6f605@thebighonker.lerctr.org>
In-Reply-To: <A15DD1EC190B44CA838F6FFEA8D9A9EA@multiplay.co.uk>
References:  <bug-187594-3630@https.bugs.freebsd.org/bugzilla/> <bug-187594-3630-CrQVkoxIUf@https.bugs.freebsd.org/bugzilla/> <A15DD1EC190B44CA838F6FFEA8D9A9EA@multiplay.co.uk>

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On 2014-08-23 09:13, Steven Hartland wrote:
> ----- Original Message ----- From: <bugzilla-noreply@freebsd.org>
> 
> 
>> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=187594
>> 
>> --- Comment #25 from fullermd@over-yonder.net ---
>> Having run it for a few months on a number of boxes now, my general 
>> impression
>> is that it seems like it goes a little _too_ far (with default options 
>> anyway;
>> I haven't tried any tuning) toward making the ARC give up its lunch 
>> money to
>> anybody who looks threateningly at it.  It feels like it should be a 
>> bit more
>> aggressive, and historically was and did fine.
>> 
>> However, it's still _much_ nicer than the unpatched case, where the 
>> rest of the
>> system starves and hides out in the swap space.  So from here, while 
>> perhaps
>> imperfect and in need of some tuning work, it's still a significant 
>> improvement
>> on the prior state, so landing it sounds just fine to me.
> 
> The attached updated patch, which has been cleaned up and hammered hard 
> at
> the event here I'll look to commit to head soon if there are no 
> objections.
> 
>    Regards
>    Steve
> 
> _______________________________________________
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and a full buildworld buildkernel garners"

cc  -O2 -pipe   
-I/usr/src/cddl/usr.bin/zinject/../../../sys/cddl/compat/opensolaris 
-I/usr/src/cddl/usr.bin/zinject/../../compat/opensolaris/include 
-I/usr/src/cddl/usr.bin/zinject/../../compat/opensolaris/lib/libumem 
-I/usr/src/cddl/usr.bin/zinject/../../contrib/opensolaris/lib/libzfs/common 
-I/usr/src/cddl/usr.bin/zinject/../../contrib/opensolaris/lib/libzfs_core/common 
-I/usr/src/cddl/usr.bin/zinject/../../contrib/opensolaris/lib/libzpool/common 
-I/usr/src/cddl/usr.bin/zinject/../../contrib/opensolaris/lib/libnvpair 
-I/usr/src/cddl/usr.bin/zinject/../../../sys/cddl/contrib/opensolaris/uts/common/fs/zfs 
-I/usr/src/cddl/usr.bin/zinject/../../../sys/cddl/contrib/opensolaris/uts/common/sys 
-I/usr/src/cddl/usr.bin/zinject/../../../sys/cddl/contrib/opensolaris/uts/common 
-I/usr/src/cddl/usr.bin/zinject/../../../sys/cddl/contrib/opensolaris/common/zfs/ 
-I/usr/src/cddl/usr.bin/zinject/../../contrib/opensolaris/head 
-I/usr/src/cddl/usr.bin/zinject/../../lib/libumem -DNEED_SOLARIS_BOOLEAN 
-std=gnu89 -Qunused-arguments  -fstack-protector -Wno-pointer-sign 
-Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable 
-Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality 
-Wno-unused-function -Wno-enum-conversion -Wno-switch -Wno-switch-enum 
-Wno-knr-promoted-parameter -Wno-parentheses -Wno-unknown-pragmas  -o 
zinject zinject.o translate.o -lgeom -lm -lnvpair -lumem -luutil 
-lzfs_core -lzfs -lzpool
/usr/obj/usr/src/tmp/usr/lib/libzpool.so: undefined reference to 
`kmem_free_target_size'
cc: error: linker command failed with exit code 1 (use -v to see 
invocation)
*** Error code 1

Stop.
make[5]: stopped in /usr/src/cddl/usr.bin/zinject
*** Error code 1

Stop.
make[4]: stopped in /usr/src/cddl/usr.bin
*** Error code 1

Stop.
make[3]: stopped in /usr/src/cddl
*** Error code 1

Stop.
make[2]: stopped in /usr/src
*** Error code 1

Stop.
make[1]: stopped in /usr/src
*** Error code 1

Stop.
make: stopped in /usr/src


-- 
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 214-642-9640 (c)     E-Mail: ler@lerctr.org
US Mail: 108 Turvey Cove, Hutto, TX 78634-5688



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