On Wed, Jul 7, 2021 at 6:50 PM Marcin Wojtas [off-list ref] wrote:
Hi,
śr., 7 lip 2021 o 01:20 Matteo Croce [off-list ref] napisał(a):
quoted
On Tue, Jul 6, 2021 at 5:51 PM Russell King (Oracle)
[off-list ref] wrote:
quoted
On Fri, Jul 02, 2021 at 03:39:47PM +0200, Matteo Croce wrote:
quoted
On Wed, 30 Jun 2021 17:17:54 +0800
Yunsheng Lin [off-list ref] wrote:
quoted
This patchset adds elevated refcnt support for page pool
and enable skb's page frag recycling based on page pool
in hns3 drvier.
Yunsheng Lin (2):
page_pool: add page recycling support based on elevated refcnt
net: hns3: support skb's frag page recycling based on page pool
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 79 +++++++-
drivers/net/ethernet/hisilicon/hns3/hns3_enet.h | 3 +
drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c | 1 +
drivers/net/ethernet/marvell/mvneta.c | 6 +-
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 +-
include/linux/mm_types.h | 2 +-
include/linux/skbuff.h | 4 +-
include/net/page_pool.h | 30 ++-
net/core/page_pool.c | 215
+++++++++++++++++---- 9 files changed, 285 insertions(+), 57
deletions(-)
Interesting!
Unfortunately I'll not have access to my macchiatobin anytime soon, can
someone test the impact, if any, on mvpp2?
I'll try to test. Please let me know what kind of testing you're
looking for (I haven't been following these patches, sorry.)
A drop test or L2 routing will be enough.
BTW I should have the macchiatobin back on friday.
I have a 10G packet generator connected to 10G ports of CN913x-DB - I
will stress mvpp2 in l2 forwarding early next week (I'm mostly AFK
this until Monday).
I managed to to a drop test on mvpp2. Maybe there is a slowdown but
it's below the measurement uncertainty.
Perf top before:
Overhead Shared O Symbol
8.48% [kernel] [k] page_pool_put_page
2.57% [kernel] [k] page_pool_refill_alloc_cache
1.58% [kernel] [k] page_pool_alloc_pages
0.75% [kernel] [k] page_pool_return_skb_page
after:
Overhead Shared O Symbol
8.34% [kernel] [k] page_pool_put_page
4.52% [kernel] [k] page_pool_return_skb_page
4.42% [kernel] [k] page_pool_sub_bias
3.16% [kernel] [k] page_pool_alloc_pages
2.43% [kernel] [k] page_pool_refill_alloc_cache
Regards,
--
per aspera ad upstream