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AIX
AIX server problem - network connection is unstable !
Post 303045027 by zxmaus on Wednesday 11th of March 2020 01:54:55 AM
03-11-2020
Moderator
ok, I don't see any errors or overflows or underruns on any of your adapters.That is a good thing. You can transfer large package sizes to everywhere else without loosing packages - which is a good thing too.
It would have been nice to know which adapters make up which link aggregation, but I forgot to ask for it
A few things I see in your network tunables, that I would probably change if this would be my systems to improve the general network flow, (i.e. sack, tcp_nodelayack, and buffer sizes) but for that it would help to know exactly which adapters make up which link aggregation. So if you could show me the lsattr -El entx outputs for your link aggregations and the underlying physical adapters that would help to make sure you dont use different speeds and depending on the adapters, the device attributes are set correctly. It might help as well to set certain settings on the adapters themselves in addition to the general system settings, like rfc1323 and buffers. And I can see that you have relatively little free memory. This may or may not be a problem so if you can give me the outputs of vmstat -v and vmstat -s, that would help me tell you the answer to this. You may as well want to populate netsvc.conf as it helps with order of name resolution and might generally improve network speed when the system does not have to guess how to find another host.
To get rid of the pkcs error on top of the lsdev -Cc adapter output, you probably need to install the security.pkcs11 fileset. And finally, can you please run lppchk -vm3 and post the output as well?.
It would have been nice to know which adapters make up which link aggregation, but I forgot to ask for it
A few things I see in your network tunables, that I would probably change if this would be my systems to improve the general network flow, (i.e. sack, tcp_nodelayack, and buffer sizes) but for that it would help to know exactly which adapters make up which link aggregation. So if you could show me the lsattr -El entx outputs for your link aggregations and the underlying physical adapters that would help to make sure you dont use different speeds and depending on the adapters, the device attributes are set correctly. It might help as well to set certain settings on the adapters themselves in addition to the general system settings, like rfc1323 and buffers. And I can see that you have relatively little free memory. This may or may not be a problem so if you can give me the outputs of vmstat -v and vmstat -s, that would help me tell you the answer to this. You may as well want to populate netsvc.conf as it helps with order of name resolution and might generally improve network speed when the system does not have to guess how to find another host.
To get rid of the pkcs error on top of the lsdev -Cc adapter output, you probably need to install the security.pkcs11 fileset. And finally, can you please run lppchk -vm3 and post the output as well?.
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LEARN ABOUT DEBIAN
ct
CT(4) BSD/i386 Kernel Interfaces Manual CT(4) NAME
ct -- WD33C93[ABC] based CBUS SCSI host adapter driver SYNOPSIS
device ct device scbus In /boot/device.hints: For most PC-9801-55, -92 and compatibles: hint.ct.0.at="isa" For ELECOM bus-master SCSI adapters: hint.ct.0.at="isa" hint.ct.0.flags="0x30000" For I-O DATA SC98 adapters: hint.ct.0.at="isa" hint.ct.0.flags="0x10000" For LOGITEC adapters: hint.ct.0.at="isa" hint.ct.0.flags="0x50000" For TEXA adapters: hint.ct.0.at="isa" hint.ct.0.flags="0x20000" For adapters with SMIT transfer mode to enable SMIT transfer: hint.ct.0.at="isa" hint.ct.0.flags="0x40000" hint.ct.0.maddr="0xdc000" Flags meaning: 0x00000 DMA transfer mode for an NEC PC-9801-55, -92 (or compatibles), ICM IF-2660, Midori-Denshi MDC-554NA, or Logitec LHA-N151 0x10000 DMA transfer mode for an I-O DATA SC-98II 0x20000 bus-master transfer mode for a TEXA HA-55BS2, its successors, or Midori-Denshi MDC-926R 0x30000 bus-master transfer mode for an ELECOM bus-master SCSI adapter 0x40000 SMIT transfer mode (for supported adapters only) 0x50000 bus-master transfer mode for a Logitec LHA-20x series, ICM IF-2766, IF-2766ET, IF-2767 or IF-2769 DESCRIPTION
The ct driver provides access to the SCSI bus connected to a WD33C93[ABC] based host adapter. HARDWARE
The ct driver supports the following adapters: o ELECOM bus-master SCSI adapters o I-O DATA SC-98II o ICM IF-2660, IF-2766, IF-2766ET, IF-2767 and IF-2769 o Logitec LHA-N151 and LHA-20x series o Midori-Denshi MDC-554NA and MDC-926R o NEC PC-9801-55, 92 and compatibles o SMIT transfer type SCSI host adapters o TEXA HA-55BS2 and its later models SEE ALSO
cd(4), ch(4), ctau(4), da(4), intro(4), sa(4), scsi(4) NOTES
Historically, the driver for the Cronyx Tau WAN adapters was ``ct''. This device name was changed to ``ctau'' to avoid conflicts with this pc98 ct driver. The network device name for ctau(4) is ``ct''. Please see ctau(4) for the details for that device. HISTORY
The ct device driver has been developed for NetBSD/pc98 and ported for FreeBSD. It first appeared in FreeBSD 4.4. AUTHORS
The ct driver was written by Naofumi HONDA. This manual page was written by Noriaki MITSUNAGA <non@FreeBSD.org> and Hideyuki KURASHINA <rushani@FreeBSD.org>. BSD
November 18, 2003 BSD