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Operating Systems AIX AIX server problem - network connection is unstable ! Post 303045117 by bobochacha29 on Thursday 12th of March 2020 08:36:19 AM
Old 03-12-2020
Quote:
Originally Posted by zxmaus
ok - so you have some link aggregations with 100/1000 and some with 10G adapters. The 10G will almost always be faster. Considering how many 10G ports you have on your box, you may want to consider to move all of them to 10G instead? That would make tuning your network much easier.

If / when you do this, after long and exhausting RAC testing on our systems (similar hardware), we have found below network tunables to be the most beneficial for us. But be careful - do not change all of them at once - but one by one and see if your performance gets better, worse or remains the same.
You can change them via no -p -o name=value - note there is NO space before and after the equal sign in the command to change them.

Code:
hstcp = 1
lo_perf = 1
rtentry_lock_complex = 1
sack = 1
sb_max = 33554432
tcp_ephemeral_high = 65535
tcp_ephemeral_low = 32768
tcp_init_window = 16
tcp_nodelayack = 1
tcp_recvspace = 8388608
tcp_sendspace = 8388608
udp_ephemeral_high = 65535
udp_ephemeral_low = 32768
udp_recvspace = 655360
udp_sendspace = 65536

in addition, you probably want to put this into your /etc/netsvc.conf
hosts=local,bind4
Thank a lot for your help. Could you show me a little bit about your system, somethings like server's system model, OS version and Oracle version, so I can see how your system is similar to ours.

Cause our system is online now, it's dangerous to change something, so we need to be sure of what to do. Thanks againSmilie
 

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aseqnet(1)						      General Commands Manual							aseqnet(1)

NAME
aseqnet - ALSA sequencer connectors over network SYNOPSIS
aseqnet [remotehost] DESCRIPTION
aseqnet is an ALSA sequencer client which sends and receives event packets over network. Suppose two hosts connected by network, hostA as a server and hostB as a client. The ALSA sequencer system must be running on both hosts. For creating the server port, run the following on hostA: hostA% aseqnet sequencer opened: 128:0 Then a user client 128 with port 0 was opened on hostA. (The client number may vary.) For creating the (network-)client port, run aseqnet with the hostname of the server: hostB% aseqnet hostA sequencer opened: 132:0 Now all events sent to hostA:128:0 are transferred to hostB:132:0, and vice versa. The ports created by aseqnet can be connected arbitrary to other sequencer ports via aconnect(1). For example, to connect hostB:132:0 to a MIDI output device 65:0: hostB% aconnect 132:0 65:0 Then events to hostA:128:0 will be delivered to hostB:65:0. The following command plays MIDI on hostB. hostA% pmidi -p 128:0 foo.mid The multiple clients may exist simultaneously. If hostC is connected as a client to hostA, events from from hostA are sent to all con- nected network clients, i.e. hostB and hostC. However, only one connection is allowed from a client to a server. To disconnect network, stop all clients before server by ctrl-C or sending signal to them. The server will automatically quit. OPTIONS
-p port Specify the TCP port number or TCP service name. -s addr Subscribe to the given address for read automatically. -d addr Subscribe to the given address for write automatically. -v Verbose mode. SEE ALSO
aconnect(1), pmidi(1) AUTHOR
Takashi Iwai <tiwai@suse.de>. January 1, 2000 aseqnet(1)

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