oifcfg iflist - Very slow

From: saurabh manroy <saurabhmanroy_at_gmail.com>
Date: Mon, 9 Jan 2012 16:53:26 +0100
Message-ID: <CAELkjfWzvvEVB8mo=Q9yv9eoMOoO+S=WB9YZaUoiYxbcJ+n8cQ_at_mail.gmail.com>

Hello Listers,
On all nodes of a RAC database, oifcfg iflist takes 2 minutes to report the results.
CRS version: 11.1.0.7, Platform: IBM AIX 6.1 /etc/hosts has all the IPs reported by the output of iflist command. 'netstat -in' also reports all the interfaces available at the OS level.

Truss with -d and -f switch gives following:

1. 1155345: kread(0, " l i d : V L A".., 4096) = 2281
2. 1155345: kread(0, " l i d : V L A".., 4096) = 0
3. 1155345: kwrite(1, " H a r d w a r e A d d".., 36) = 36
4. kread(9, " H a r d w a r e A d d".., 4096) = 36
5. 1155345: *126.7475*: close(1) = 0
6. 1155345: 126.7478: kfcntl(2, F_GETFL, 0x00000001) = 67110914
7. 126.7478: close(9) = 0
8. 1155345: 126.7479: _exit(0)

Without -f switch in the truss command, I see the following:

0.3459:        kfork()                          = 258936
0.3484:        thread_setmystate(0x0FFFFFFFFFFFD5F0, 0x0000000000000000) = 0
0.3487:        close(10)                        = 0
0.3489:        kfcntl(9, F_GETFL, 0x0000000110007DD0) = 0
0.3490:        kioctl(9, 22528, 0x0000000000000000, 0x0000000000000000)
Err#25 ENOTTY
0.3509:        kioctl(9, 22528, 0x0000000000000000, 0x0000000000000000)
Err#25 ENOTTY
2.3512:        kread(9, "\0\0\0\0\0\0\0\0\0\0\0\0".., 4096) (sleeping...)
kread(9, " H a r d w a r e   A d d".., 4096)    = 36
*117.3814*:        close(9)                       = 0

On a different RAC cluster in same network, same command reports results within a Second as expected.

1. 3903619: 0.5246: kioctl(0, 22528, 0x00000000, 0x00000000) Err#25 ENOTTY
2. 3903619: kread(0, " - - - - - - - - - - - -".., 4096) = 2626
3. 3903619: 0.5250: kioctl(1, 22528, 0x00000000, 0x00000000) Err#25 ENOTTY
4. 3903619: kread(0, " - - - - - - - - - - - -".., 4096) = 0
5. 3903619: kwrite(1, " H a r d w a r e A d d".., 36) = 36
6. 3903619: *0.5255*: close(1) = 0
7. 2179287: kread(9, " H a r d w a r e A d d".., 4096) = 36
8. 3903619: *0.5257*: kfcntl(2, F_GETFL, 0x00000001) = 67110914
9. 3903619: 0.5258: _exit(0)
10. 2179287: 0.5258: close(9) = 0

Any hints/suggestions are welcome..

Note: oifcfg getif reports the results in a second.

Regards,
Saurabh Manroy

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Received on Mon Jan 09 2012 - 09:53:26 CST