On Tue, Apr 18, 2017 at 5:47 PM, Eric Dumazet wrote:
>
> For the last time, do not top post on netdev.
Sorry about that.
>
> On Tue, 2017-04-18 at 17:15 -0700, Code Soldier1 wrote:
>> I am not suggesting that we do not do cache alignment. That is
>> required for performance. I have gone through t
For the last time, do not top post on netdev.
On Tue, 2017-04-18 at 17:15 -0700, Code Soldier1 wrote:
> I am not suggesting that we do not do cache alignment. That is
> required for performance. I have gone through this exercise because I
> need to add a field to sk_buff and I want to do that wit
I am not suggesting that we do not do cache alignment. That is
required for performance. I have gone through this exercise because I
need to add a field to sk_buff and I want to do that without causing
any adverse effects.
Now that we have discovered that there are 40 bytes that can be used
withou
Please do not top post on netdev
On Tue, 2017-04-18 at 16:26 -0700, Code Soldier1 wrote:
> Eric,
>
> This alignment flag is passed to the cache constructor and the
> allocation is indeed cache aligned. However, since the allocated size
> is not a multiple of the alignment, wont memory be wasted ?
Eric,
This alignment flag is passed to the cache constructor and the
allocation is indeed cache aligned. However, since the allocated size
is not a multiple of the alignment, wont memory be wasted ?. We can
get 40 extra bytes without any side effects since they are on the same
cache line ?
kmem_c
On Tue, 2017-04-18 at 10:34 -0700, Code Soldier1 wrote:
> Hi Folks,
>
> I am sure there is a reason for the current sizes of these structures,
> However the reason is not obvious to me. So please help me understand.
>
> Currently the size of sk_buff on an x86_64 system is 232 bytes -- Why
> is th
Hi Folks,
I am sure there is a reason for the current sizes of these structures,
However the reason is not obvious to me. So please help me understand.
Currently the size of sk_buff on an x86_64 system is 232 bytes -- Why
is that. I expected it to be a multiple of 32/64 as they are the most
commo
