Kernel parameter for network performance

[j773303]

Our system usually do some more big files transfer between two machine. Does anyone knows whose kernel parameter could be tune for better network performance? Thanks.

[Joseph Loo]

hi,

do not think there are any associated kernel parameters to improve your network performance but there are others parameters to refer to. read this thread:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=178584

it has more to do with the network backbone and the network card which the server is using.

a good gauge is to ftp a big file, i.e. 100MB or more to and from the server to size up the network backbone and the card performance.

regards.

[V.Tamilvanan]

Hi,

Why don't you configure a dedicated private network between these two system. What I say is add a lan card in both the system and configure private ip address so that it don't disturb your normal other network connections and it would be faster.

[Stefan Farrelly]

Depends how you do your transfer. Do you use nfs ? ftp or samba ?

[rick jones · Accepted solution]

you might consider some ndd settings:

ftp://ftp.cup.hp.com/dist/networking/briefs/annotated_ndd.txt

but if you use the hp-supplied ftp or rcp you want to look into the -B option on those instead.

you might also compare netperf TCP_STREAM performance to what you are getting on file transfers (assuming you use ftp or rcp, not NFS).

for NFS, there is a book out there called "optimizing nfs performance" by david olker that discusses NFS on HP-UX

[Edgar_16]

Here are some parameters that will enhance and make more secure your HP-UX systems:
# vi /etc/rc.config.d/nddconf

TRANSPORT_NAME[0]=ip
NDD_NAME[0]=ip_forwarding
NDD_VALUE[0]=0

TRANSPORT_NAME[1]=ip
NDD_NAME[1]=ip_forward_directed_broadcast
NDD_VALUE[1]=0

TRANSPORT_NAME[2]=ip
NDD_NAME[2]= Ip_forward_src_routed
NDD_VALUE[2]=0

TRANSPORT_NAME[3]=ip
NDD_NAME[3]= Ip_ire_gw_probe
NDD_VALUE[3]=0

TRANSPORT_NAME[4]=ip
NDD_NAME[4]= Ip_respond_to_timestamp_broadcast
NDD_VALUE[4]=0

TRANSPORT_NAME[5]=ip
NDD_NAME[5]= Ip_respond_to_timestamp
NDD_VALUE[5]=0

TRANSPORT_NAME[6]=ip
NDD_NAME[6]= Ip_send_redirect
NDD_VALUE[6]=0

TRANSPORT_NAME[7]=ip
NDD_NAME[7]= Ip_respond_to_address_mask_broadcast
NDD_VALUE[7]=0

TRANSPORT_NAME[8]=ip
NDD_NAME[8]= Ip_respond_to_echo_broadcast
NDD_VALUE[8]=0