FreeBSD hacker 101

[Bert JW Regeer]

On Jan 24, 2008, at 22:58 , william wong wrote:

> That brings me to another ponder: why juniper and cisco are using
> FreeBSD and not Linux even Linux performs better in an UP environment?
>
> 2008/1/25, Dag-Erling Smørgrav <des at des.no>:
>> "william wong" <beijing.liangjie at gmail.com> writes:
>>> Dag-Erling Smørgrav <des at des.no> writes:
>>>> "william wong" <beijing.liangjie at gmail.com> writes:
>>>>> It seems that Juniper favors the even number FreeBSD's.
>>>> Only because 5 was a dog.  They probably stuck with 4 for a  
>>>> while, then
>>>> switched to 6 once they had ascertained that it was significantly  
>>>> more
>>>> stable than 5.  I would be surprised if they skipped 7.
>>> Please pardon my ignorance of the jargons. Does that mean 5 is not
>>> stable or does not perform or what?
>>
>> FreeBSD 5 was not a very good series.  It was released late and had
>> issues with both stability and performance.  FreeBSD 6 corrected the
>> stability issues and some of the worst performance issues.  FreeBSD 7
>> took care of the remaining performance issues; it may not be as  
>> fast as
>> 4 was on UP, but it beats Linux on SMP.
>>
>> (there's no point in comparing SMP performance between 4 and 7  
>> since 4
>> had a single-threaded kernel and practically no userland thread  
>> support)
>>
>> DES
>> --
>> Dag-Erling Smørgrav - des at des.no
>>


Please do not top post.

The reason Juniper and Cisco are probably using FreeBSD is because of  
the license that FreeBSD is under (BSD-License) versus the Linux  
kernels GPL.

Bert JW Regeer