Re: [PATCH] Re: Shared memory shmat/dt not working well in 2.5.x

[Zlatko Calusic]

Alessandro Suardi <[e-mail]> writes:

> Zlatko Calusic wrote:
>
>>>I'm glad to report that Oracle 9.2 is now able to start once again
>>>  on 2.5.x series :)
>>>
>>>Thanks, cool work as always !
>> Was it a known problem for some time?
>> I haven't been testing 2.5.x series for some time, and also haven't
>> read linux-kernel list last few months, so I don't know exact history
>> of the bug. If you can enlighten me, I'm just curious... :)
>> I rememeber other more complicated bugs from the older 2.5.x kernels,
>> and now I'll test if they're solved in newer ones. I might need some
>> help if they still exist (could you lend me a hand if that's the
>> case?) as I was getting Oracle internal error - coredump - with only
>> one meaningful sentence (at least to me :)). Google was silent on the
>> case. :(
>
> I reported the issue on l-k the other day:
>
> http://www.uwsg.iu.edu/hypermail/linux/kernel/0209.3/1691.html

I see. Same day I decided to dig deeper. :)

>
> The more complicated bug you're talking about is the exec_mmap
>   change introduced in 2.5.19 and fixed a handful of versions
>   later, possibly .28, where PMON wouldn't start after 120"...
>   I guess :)

Great. Thanks for the useful info.

It looks that there's a chance I will do only the interesting
benchmarking part. :) I'm quite curious how Andrew's work in 2.5.x
will affect performance of Oracle database.

Thanks for everything.
-- 
Zlatko