Panic with RELENG_6_2 on DELL PE 4600 with PAE

Artem Kuchin matrix at itlegion.ru
Thu Oct 4 12:08:18 PDT 2007


Stephen Clark wrote:
> Artem Kuchin wrote:
> 
>> Claus Guttesen wrote:
>> 
>> 
>>>>>> Why would there be no space when I have 24GB of memory?
>>>>>> 
>>>>>> 
>>>>> 1. Any process, including the kernel can only allocate up to 4 GB
>>>>> of memory on a 32-bit system (since a 32-bit integer can only
>>>>> hold that many values)
>>>>> 2. The kernel is further constrained so the user programs can get
>>>>> enough memory
>>>>> 3. Kernel structures for tracking and using memory are also stored
>>>>> in kernel memory. 24 GB of memory with PAE probably "eats up" a
>>>>> lot of those. I think you'll need to increase kmem_size (see
>>>>> http://wiki.freebsd.org/ZFSTuningGuide for an example - ignore
>>>>> ZFS-specific things).
>>>>> 
>>>>> 
>>>> It made no difference. Still the same error.
>>>> 
>>>> Is anyone actually using PAE with FreeBSD 6.2? I have found
>>>> practically no information using
>>>> google.
>>>> 
>>>> 
>> 
>> We are using it on very heavy loaded production web server. 8GB of
>> ram, dual xeon with HT. FreebSD 6-STABLE. about 900 process running
>> constantly in  about 20 jails. No problems detected :)
>> 
>> Planning to migrate to 7-CURRENT AMD64 within a month.
>> 
> Hi Artem,
> 
> Could you send me your kernel config file? I have tried the standard
> PAE config file with
> no luck.

I'd be glad to do so, but when i send email to you i get
<Stephen.Clark at seclark.us>:
64.202.166.12 does not like recipient.
Remote host said: 553 Dynamic pool 84.21.226.46. <http://unblock.secureserver.net/?ip=84.21.226.*>
Giving up on 64.202.166.12.

I have visited the link and  made a request to unblock our smtp server but it hasn;t been done
yet.
So, i send it to stable list with attachments :)

--
Artem
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