On Wed, Feb 13, 2019 at 1:57 PM Stephen Hemminger
<step...@networkplumber.org> wrote:
>
> On Tue, 12 Feb 2019 17:58:41 -0800
> Eric Dumazet <eduma...@google.com> wrote:
>
> > In the past, we tried to increase the buffer size up to 32 KB in order
> > to reduce number of syscalls per dump.
> >
> > Commit 2d34851cd341 ("lib/libnetlink: re malloc buff if size is not enough")
> > brought the size back to 4KB because the kernel can not know the application
> > is ready to receive bigger requests.
> >
> > See kernel commits 9063e21fb026 ("netlink: autosize skb lengthes") and
> > d35c99ff77ec ("netlink: do not enter direct reclaim from netlink_dump()")
> > for more details.
> >
> > Fixes: 2d34851cd341 ("lib/libnetlink: re malloc buff if size is not enough")
> > Signed-off-by: Eric Dumazet <eduma...@google.com>
> > Cc: Hangbin Liu <liuhang...@gmail.com>
> > Cc: Phil Sutter <p...@nwl.cc>
>
> Applied, although maybe we should bump it to 64K or bigger?Note the kernel does not yet try 64KB allocations, so I do not see an urgent need for that :)
