On Mon, Jun 3, 2024 at 1:41 PM Igor Gutorov <igooto...@gmail.com> wrote: > > On Mon, May 27, 2024 at 7:20 PM Igor Gutorov <igooto...@gmail.com> wrote: > > > > According to the Intel X710/XXV710/XL710 Datasheet, the maximum receive > > queue descriptor length is 0x1FE0 (8160 in base 10). This is specified > > as QLEN in table 8-12, page 1083. > > > > I've tested this change with an XXV710 NIC and it has positive effect on > > performance under high load scenarios. Where previously I'd get > > ~2000 packets/sec miss rate, now I get only ~40 packets/sec miss rate. > > > > Signed-off-by: Igor Gutorov <igooto...@gmail.com> > > --- > > drivers/net/i40e/i40e_rxtx.h | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/drivers/net/i40e/i40e_rxtx.h b/drivers/net/i40e/i40e_rxtx.h > > index 2f2f890855..33fc9770d9 100644 > > --- a/drivers/net/i40e/i40e_rxtx.h > > +++ b/drivers/net/i40e/i40e_rxtx.h > > @@ -25,7 +25,7 @@ > > #define I40E_RX_MAX_DATA_BUF_SIZE (16 * 1024 - 128) > > > > #define I40E_MIN_RING_DESC 64 > > -#define I40E_MAX_RING_DESC 4096 > > +#define I40E_MAX_RING_DESC 8160 > > > > #define I40E_FDIR_NUM_TX_DESC (I40E_FDIR_PRG_PKT_CNT << 1) > > #define I40E_FDIR_NUM_RX_DESC (I40E_FDIR_PRG_PKT_CNT << 1) > > -- > > 2.45.1 > > > > CC'ing to a different email (got an address rejected error, the > MAINTAINERS file might need an update). > > Also, I've noticed that an X722 NIC is also supported by the i40e > driver, but it seems the datasheet isn't on Intel's website for that > NIC. Does anybody know if X722 has 4096 or 8160 usable descriptors? If > someone could test this patch against X722, that would be great.
Apologies for pinging again. Who should I send my patch to? The MAINTAINERS file shows Yuying Zhang as the maintainer of the net/i40e driver and contains 2 emails, but both yuying.zh...@intel.com and yuying.zh...@intel.com emails are non-existent (550 Address rejected).
