NFS poor performance in ipfw_nat

[Andrey V. Elsukov]

On 18.09.2018 01:53, KIRIYAMA Kazuhiko wrote:
> Hi, all
> 
> I'm working on ipfw_nat box with port redirect for sunrpc
> (111) and nfsd (2049):
> 
> # ifconfig 
> em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>         options=85259b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,LRO,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO>
> igb0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>         options=e505bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,LRO,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
> # ipfw nat show config
> ipfw nat 123 config if em0 log deny_in same_ports unreg_only reset redirect_port tcp 192.168.1.253:22 22253 redirect_port tcp 192.168.1.252:22 22252 redirect_port tcp 192.168.1.251:22 22251 redirect_port tcp 192.168.1.250:22 22250 redirect_port tcp 192.168.1.249:22 22249 redirect_port tcp 192.168.1.248:22 22248 redirect_port tcp 192.168.1.247:22 22247 redirect_port tcp 192.168.1.246:22 22246 redirect_port tcp 192.168.1.245:22 22245 redirect_port tcp 192.168.1.244:22 22244 redirect_port tcp 192.168.1.243:22 22243 > 
> Is there any suggestions ?
> 

Hi,

try to disable TSO on your NICs.

-- 
WBR, Andrey V. Elsukov

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