Gfilui

looking for some help/advice

i have two AWS servers one in a customers environment and a dev server in my own

We have been testing device SSL to send data

the Customers Server aka live works without any packet loss

but the test one drops 80% - 90% of packets

i found that if we turn the scatter gather off we get 100% of packets

however i can not get this setting to persist

i have tried a start up script to trigger after the networking service

i have also added

ethtool -k eth0 sg off

into the rc.local file

my questions are

How can i change the ethtool too keep the setting
Where is the config file for Ethtool
is there another setting that can cause this ?

Here are the differences between my two servers

Test

rx-checksumming: on [fixed] tx-checksumming: on
 tx-checksum-ipv4: on [fixed]
 tx-checksum-ip-generic: off [fixed]
 tx-checksum-ipv6: off [requested on]
 tx-checksum-fcoe-crc: off [fixed]
 tx-checksum-sctp: off [fixed] 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: off [requested on] udp-fragmentation-offload: off [fixed] generic-segmentation-offload: on generic-receive-offload: on large-receive-offload: off [fixed] rx-vlan-offload: off [fixed] tx-vlan-offload: off [fixed] ntuple-filters: off [fixed] receive-hashing: off [fixed] highdma: off [fixed] rx-vlan-filter: off [fixed] vlan-challenged: off [fixed] tx-lockless: off [fixed] netns-local: off [fixed] tx-gso-robust: on [fixed] tx-fcoe-segmentation: off [fixed] tx-gre-segmentation: off [fixed] tx-ipip-segmentation: off [fixed] tx-sit-segmentation: off [fixed] tx-udp_tnl-segmentation: off [fixed] fcoe-mtu: off [fixed] tx-nocache-copy: off loopback: off [fixed] rx-fcs: off [fixed] rx-all: off [fixed] tx-vlan-stag-hw-insert: off [fixed] rx-vlan-stag-hw-parse: off [fixed] rx-vlan-stag-filter: off [fixed] l2-fwd-offload: off [fixed] busy-poll: off [fixed] hw-tc-offload: off [fixed]

Dev

 rx-checksumming: on
 tx-checksumming: on
 tx-checksum-ipv4: off [fixed]
 tx-checksum-ip-generic: on
 tx-checksum-ipv6: off [fixed]
 tx-checksum-fcoe-crc: off [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: off [fixed]
 rx-vlan-offload: on [fixed]
 tx-vlan-offload: on [fixed]
 ntuple-filters: off [fixed]
 receive-hashing: off [fixed]
 highdma: on [fixed]
 rx-vlan-filter: on [fixed]
 vlan-challenged: off [fixed]
 tx-lockless: off [fixed]
 netns-local: off [fixed]
 tx-gso-robust: off [fixed]
 tx-fcoe-segmentation: off [fixed]
 tx-gre-segmentation: off [fixed]
 tx-ipip-segmentation: off [fixed]
 tx-sit-segmentation: off [fixed]
 tx-udp_tnl-segmentation: off [fixed]
 fcoe-mtu: off [fixed]
 tx-nocache-copy: off
 loopback: off [fixed]
 rx-fcs: off [fixed]
 rx-all: off [fixed]
 tx-vlan-stag-hw-insert: off [fixed]
 rx-vlan-stag-hw-parse: off [fixed]
 rx-vlan-stag-filter: off [fixed]



l2-fwd-offload: off [fixed]
busy-poll: on [fixed]
hw-tc-offload: off [fixed]

Thanks for any help and advice :D