ok...I'm totally lost... :)
$ ethtool -k em1
Features for em1:
rx-checksumming: on
tx-checksumming: on
tx-checksum-ipv4: on
tx-checksum-ip-generic: off [fixed]
tx-checksum-ipv6: on
tx-checksum-fcoe-crc: on [fixed]
tx-checksum-sctp: on
scatter-gather: on
tx-scatter-gather: on
tx-scatter-gather-fraglist: off [fixed]
tcp-segmentation-offload: on
tx-tcp-segmentation: on
tx-tcp-ecn-segmentation: off [fixed]
tx-tcp6-segmentation: on
udp-fragmentation-offload: off [fixed]
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: on
rx-vlan-offload: on
tx-vlan-offload: on
ntuple-filters: off
receive-hashing: on
highdma: on [fixed]
rx-vlan-filter: on
vlan-challenged: off [fixed]
tx-lockless: off [fixed]
netns-local: off [fixed]
tx-gso-robust: off [fixed]
tx-fcoe-segmentation: on [fixed]
tx-gre-segmentation: off [fixed]
tx-ipip-segmentation: off [fixed]
tx-sit-segmentation: off [fixed]
tx-udp_tnl-segmentation: off [fixed]
tx-mpls-segmentation: off [fixed]
fcoe-mtu: off [fixed]
tx-nocache-copy: on
loopback: off [fixed]
rx-fcs: off [fixed]
rx-all: off
tx-vlan-stag-hw-insert: off [fixed]
rx-vlan-stag-hw-parse: off [fixed]
rx-vlan-stag-filter: off [fixed]
l2-fwd-offload: off
Daofeng
On Tue, Jun 16, 2015 at 12:55 PM, Daofeng Li <lidaof@xxxxxxxxx> wrote:
Thanks Adi, I'll try.best,DaofengOn Tue, Jun 16, 2015 at 12:01 PM, Adi Kriegisch <adi@xxxxxxxxxxxxxxx> wrote:Hey!
> Honestly..I don't know what those dropped packets, it;s just a new
> installed system.
I see... depending on what services are running on that network, this might
be some avahi messages or similar stuff; in case this is a storage-only
network and there is no other stuff floating around, this may well be the
cause for the issues...
> Do you mean my MTU 9000 is too high?
No, I don't think so. Maybe some of the ethernet offloading stuff in the
NIC is unable to handle larger packets? You may check with 'ethtool -k em1'
what is enabled and may try to selectively disable and retest...
-- Adi
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