Performance problem with HSC 10/100Base-TX Card

[Alex Almaraz]

OS: HPUX 11.11

Server: HP 9000/K570 class (old)

Current net config:

#lanscan -funC lan
lan 4 10/8/2/0 btlan CLAIMED INTERFACE HSC 10/100Base-TX K-Class

#ifconfig lan4
lan4: flags=842
inet 135.149.199.7 netmask ffffff00 broadcast 135.149.199.255


Autoneg: Off
Speed: 100mbps
Duplex Mode: Full

The interface is used for backups (Veritas NetBackup 4.5 FP3)

NetBackup server: Solaris 9

Net Config:
adv_autoneg_cap
1
adv_100T4_cap
0
adv_100fdx_cap
1
adv_100hdx_cap
1
adv_10fdx_cap
1
adv_10hdx_cap
1

Working fine for other servers !

Someone can help to improve the performance, the backups are currently running at 101 KBps. The lowest speed on other servers is about 1800 KBps, the best ... between 5000 and 7000 KBps.

Best regards

[Christian Tremblay]

Check that your switch ports are also set at 100FD

Chris

[rick jones · Accepted solution]

My advice is that unless you know that you have switches which are fubar, leave autoneg enabled. The HSC card should autoneg just fine.

The following is my bit of boiler-plate that will help you see if you have a duplex mismatch somewhere. Translation to that "other" OS left as an excercise to the reader :)

[Steven E. Protter]

Shalom,

Definitely the switch, perhaps bad wiring. This is typical of Cisco switches.

SEP

[Alex Almaraz]

I will try swapping the cable to another port working fine !.

Regards

[Alex Almaraz]

After many tests, I decided to avoid the backup of NFS resources (check box in the NetBackup policy), this change allowed the backup to run better but I think that the port swapping helped in some manner.

Thanks for your help.

Best regards

[rick jones]

check your lanadmin stats for each active interface on your system - lanadmin -g mibstatst and make sure they are clean - especially wrt the duplex attachment I posted

[Alex Almaraz]

check this :


# lanadmin -g mibstats 4

LAN INTERFACE STATUS DISPLAY
Thu, Nov 16,2006 15:09:14

PPA Number = 4
Description = lan4 HSC 10/100Base-TX K-Class [100BASE-TX,FD,AUTO,TT=1500]
Type (value) = ethernet-csmacd(6)
MTU Size = 1500
Speed = 100000000
Station Address = 0x60b059f645
Administration Status (value) = up(1)
Operation Status (value) = up(1)
Last Change = 18693922
Inbound Octets = 3442217606
Inbound Unicast Packets = 28674734
Inbound Non-Unicast Packets = 4245
Inbound Discards = 0
Inbound Errors = 0
Inbound Unknown Protocols = 6
Outbound Octets = 2251831301
Outbound Unicast Packets = 57120496
Outbound Non-Unicast Packets = 1160
Outbound Discards = 0
Outbound Errors = 0
Outbound Queue Length = 0
Specific = 655367

Ethernet-like Statistics Group

Index = 2
Alignment Errors = 0
FCS Errors = 0
Single Collision Frames = 0
Multiple Collision Frames = 0
Deferred Transmissions = 0
Late Collisions = 0
Excessive Collisions = 0
Internal MAC Transmit Errors = 0
Carrier Sense Errors = 0
Frames Too Long = 0
Internal MAC Receive Errors = 0

Best regards

[rick jones]

Looks clean - autoneg and full-duplex suggests autoneg didn't fail, which is backed-up by the lack of FCS errors being reported.

[Alex Almaraz]

Yes, you get it.

Thanks for you continuous help Rick,

Best regards