Re: AIX is slow to login on port 22 and port 23

From: Lamar Saxon (Lamar.Saxon_at_AMERICREDIT.COM)
Date: 12/07/04

  • Next message: Bill Verzal: "Re: vmtune -P(maxperm) who has gone below 40%"
    Date:         Tue, 7 Dec 2004 09:33:12 -0600
    To: aix-l@Princeton.EDU
    
    

    From a cursory glance, your machine is CPU bound and hence the long
    login times. This is a short sample; but it looks like you are working
    the machine. At times you have 8/9 processes in the run queue with 2 in
    the wait queue. How many processors does this machine have ?

    Memory and I/O wait looks good; but user CPU is REALLY high...

    Lamar

    -----Original Message-----
    From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
    Patrick B. O'Brien
    Sent: Monday, December 06, 2004 4:32 PM
    To: aix-l@Princeton.EDU
    Subject: Re: AIX is slow to login on port 22 and port 23

    Vmstat 1 20. The 95 is bad but the rest is livable..?

      r b avm fre re pi po fr sr cy in sy cs
    us sy id wa
     1 2 1086399 346713 0 0 0 0 0 0 4907 24052 18175 42 10 49
    0
     7 2 1086447 346658 0 0 0 0 0 0 5471 28744 18764 55 11 34
    1
     5 2 1085499 347639 0 0 0 8 13 0 5198 32925 17729 73 15 12
    0
     8 2 1085509 347625 0 0 0 8 9 0 6630 33237 18975 76 11 13
    0
     3 2 1086443 346662 0 0 0 0 0 0 6112 31477 17480 83 10 6
    0
     8 2 1086448 346661 0 0 0 13 17 0 5790 27331 16921 67 8 24
    0
     9 2 1086448 346655 0 0 0 0 0 0 5808 30304 16660 92 7 1
    0
     3 2 1086448 346659 0 0 0 8 11 0 5982 27693 17955 76 5 17
    1
     0 2 1086448 346659 0 0 0 0 0 0 4151 11611 14649 18 2 79
    1
     0 2 1086486 346616 0 0 0 17 23 0 4386 10096 13967 2 3 95
    0

    -----Original Message-----
    From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU]On Behalf Of
    Lamar Saxon
    Sent: Monday, December 06, 2004 2:18 PM
    To: aix-l@Princeton.EDU
    Subject: Re: AIX is slow to login on port 22 and port 23

    What is your average CPU utilization -> NMON, TOPAS, top, vmstat... If
    your CPU idle is down in the low teens like that then I can see what it
    is slow to log in.

    Wow, is 7% more unique or the average idle ?

    Lamar

    -----Original Message-----
    From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
    Patrick B. O'Brien
    Sent: Monday, December 06, 2004 4:09 PM
    To: aix-l@Princeton.EDU
    Subject: Re: AIX is slow to login on port 22 and port 23

    Sometimes this box does not respond after I enter my user profile and
    other times I enter my password and it is slow to get to a shell prompt.

    Yeah, okay sometimes this box does drop to 7% idle, hmm.

    Doing a nslookup on the 2 IP addresses in my /etc/resolv.conf checks
    good.

    -----Original Message-----
    From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU]On Behalf Of
    Lamar Saxon
    Sent: Monday, December 06, 2004 2:00 PM
    To: aix-l@Princeton.EDU
    Subject: Re: AIX is slow to login on port 22 and port 23

    A little more information...

    When you say that you get your user profile then 30 seconds later you
    get your password prompt; are you saying that you get a herald and
    login: then 30 seconds later you get password: ?

    If that is the case, what is the CPU utilization on this machine ?

    BTW, using the IP address vs. the name only checks the resolution from
    the client; not the reverse resolution the server is doing. Are you
    nameservers in /etc/resolv.conf reachable ( unless the answer to the
    first question is yes ).

    Lamar

    -----Original Message-----
    From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
    Patrick B. O'Brien
    Sent: Monday, December 06, 2004 3:38 PM
    To: aix-l@Princeton.EDU
    Subject: AIX is slow to login on port 22 and port 23

    AIX 4.3.3.11 not in a DMZ.

    When I telnet or Ssh into this box, I key in my user profile and after
    30 seconds, I am prompted for my password. This is not a DNS problem,
    because it is slow when using the IP address too. Of course, my Oracle
    Application is slow too.

    Nothing in /var/adm/syslog, alog -t console or errpt.

    I do see in nmon, my real memory is at 99%; even though my maxperm is
    set to 60. This box is not paging as that value is at 97% free.

    Any thoughts that might point me to a fix would be appreciated? TIA.

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  • Next message: Bill Verzal: "Re: vmtune -P(maxperm) who has gone below 40%"

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