kern/146528: [zfs] Severe memory leak in ZFS on i386

[Peter Maloney]

So then I guess the simple answer is that you should consider a hardware
upgrade.

With ZFS, you should be using a 64 bit system. And ZFS wants lots of
memory, so since memory is cheap, get at least 8 GB.

I have 16 GB on my workstation; and it is great. Memory caches
everything, so the file system is very fast. And I can run my Virtual
machines with as much memory as I want, and still have a comfortable
amount left over for the base system.


On 01/25/2012 12:31 PM, Michel Le Cocq wrote:
> ok in fact I didn't understand your first question !
>
> I see this trouble only on my personnal i386 machine.
> I have also several amd64 with a lot of mem 24G or some virtual with
> 4G all on amd64 and they work perfectly on 8.2 since more than 1 year.
>
> --
> M
>
> Peter Maloney a écrit:
>> I expected you would say it was much older, somewhere between April and
>> September last year. My amd64 systems (dual cpu quad core Xeon) with 48
>> GB of ram have no issues like this. And my amd64 test VMs with 512M-2GB
>> of RAM don't have this problem either, but of course they aren't tested
>> the same.
>>
>>
>>
>> On 01/25/2012 12:00 PM, Michel Le Cocq wrote:
>>> I recently update 1 week maybe !
>>>
>>> Peter Maloney a écrit:
>>>> When was your 8.2-STABLE built / csup'd?
>>>>
>>>> Peter
>>>>
>>>>
>>>> On 01/25/2012 09:40 AM, Michel Le Cocq wrote:
>>>>> Hi every body, I upgrade my Freebsd 8.2-STABLE i386 to 9.0 i386.
>>>>>    Intel(R) Atom(TM) CPU D510   @ 1.66GHz
>>>>>    real memory  = 4294967296 (4096 MB)
>>>>>    avail memory = 3127390208 (2982 MB)
>>>>>
>>>>> I'm on a ZFS Root file systeme on 2 USB drive and 6 sata drive for
>>>>> data. 
>>>>>
>>>>> 	# zpool list
>>>>> 	NAME    SIZE  ALLOC   FREE    CAP  DEDUP  HEALTH  ALTROOT
>>>>> 	data    931G   254G   677G    27%  1.00x  ONLINE  -
>>>>> 	stock  74.5G  12.4G  62.1G    16%  1.00x  ONLINE  -
>>>>> 	tank    696G   574G   122G    82%  1.00x  ONLINE  -
>>>>> 	zroot  3.66G  2.49G  1.17G    67%  1.00x  ONLINE  -
>>>>>
>>>>> Before upgrade, I must use some mana things in my /boot/loader.conf
>>>>>
>>>>> 	vm.kmem_size="330M"
>>>>> 	vm.kmem_size_max="330M"
>>>>> 	vfs.zfs.arc_max="40M"
>>>>> 	vfs.zfs.vdev.cache.size="5M"
>>>>> 	
>>>>> With this config my server was not so stable.
>>>>>
>>>>> Some days it work perfectly, some others it freeze with kmem_malloc
>>>>> kmem_map too small. 
>>>>> Without this mana it freeze really often.
>>>>>
>>>>> The thing which make me upgrade is that after one of this crash after
>>>>> reboot it won't mount my data pool which was at 99% of his CAP. The
>>>>> only way I find to boot is to disconnect the pools drive and export
>>>>> it.
>>>>>
>>>>> Now I'm on exactly the same host after upgrade to 9.0 and it seems to
>>>>> work really really better (3 days up with out any trouble).
>>>>>
>>>>> --
>>>>> M
>>>>>
>>>>> Garrett Cooper a écrit:
>>>>>> The following reply was made to PR kern/146528; it has been noted by GNATS.
>>>>>>
>>>>>> From: Garrett Cooper <yanegomi at gmail.com>
>>>>>> To: bug-followup at FreeBSD.org, EdwinGuy at GMail.com
>>>>>> Cc:  
>>>>>> Subject: Re: kern/146528: [zfs] Severe memory leak in ZFS on i386
>>>>>> Date: Sun, 9 Oct 2011 12:34:00 -0700
>>>>>>
>>>>>>  Could you please try upgrading to 8.2-STABLE or 9.0 and see if the
>>>>>>  issue persists with ZFS v28?
>>>>>>  -Garrett
>>>>>> _______________________________________________
>>>>>> freebsd-fs at freebsd.org mailing list
>>>>>> http://lists.freebsd.org/mailman/listinfo/freebsd-fs
>>>>>> To unsubscribe, send any mail to "freebsd-fs-unsubscribe at freebsd.org"


-- 

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Peter Maloney
Brockmann Consult
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E-mail: peter.maloney at brockmann-consult.de
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