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Home > Archive > Unix administration > February 2004 > AIX 5.2 on RS6000 is slow with rsh help needed
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AIX 5.2 on RS6000 is slow with rsh help needed
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| Davor Pavisic 2004-02-02, 9:35 am |
| Hi all,
I am in the process of moving a CVS repository that used to be running
on red hat linux 7.3 to an IBM RS6000 running aix 5.2.
I think I have correctly setup the box so that rsh works accordingly
to CVS requirements.... namely "Then test that ‘rsh' is working with
rsh -l bach faun.example.org 'echo $PATH'"
ok so the rsh command works fine... I get the contents of the $PATH
variable; however, my problem is that I get it after a minute and a
half wait....
So I run ping right?
[dp@Mars testcvs]$ ping phobos
PING phobos (10.2.3.61) from 10.2.3.68 : 56(84) bytes of data.
64 bytes from phobos (10.2.3.61): icmp_seq=0 ttl=255 time=606 usec
64 bytes from phobos (10.2.3.61): icmp_seq=1 ttl=255 time=239 usec
this looks right!!!
so I run
[dp@Mars testcvs]$ time rsh -l dp phobos 'echo $PATH'
/usr/bin:/etc:/usr/sbin:/usr/ucb:/usr/bin/X11:/sbin:/usr/java130/jre/bin:/usr/java130/bin
real 1m40.716s
user 0m0.000s
sys 0m0.010s
I have configured "communication applications and services" using smit
cvs is working but there is no way users will agree to wait for 1m40s
to do a simple checkin
I would really appreciate any ideas..
regards
davor
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| Doug Freyburger 2004-02-03, 1:35 am |
| Davor Pavisic wrote:quote:
>
> I think I have correctly setup the box so that rsh works accordingly
> to CVS requirements.... namely "Then test that ?rsh' is working with
> rsh -l bach faun.example.org 'echo $PATH'"
>
> ok so the rsh command works fine... I get the contents of the $PATH
> variable; however, my problem is that I get it after a minute and a
> half wait....
DNS every time. The even multiple of 30 seconds is the key. The
daemon that processes the rsh request gets a connection from an IP
address, it does a reverse look-up in DNS, and then checks the .rhost
files and so on. DNS spends 30 seconds per nameserver listed in
/etc/resolv.conf. So you have a broken chain of deligation in your
reverse tables, an otherwise broken DNS, or your host shouldn't be
using DNS at all. All on the remote side.
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| Davor Pavisic 2004-02-03, 10:35 pm |
| dfreybur@yahoo.com (Doug Freyburger) wrote in message news:<7960d3ee.0402030618.2e64956f@posting.google.com>...
quote:
> DNS every time. The even multiple of 30 seconds is the key. The
> daemon that processes the rsh request gets a connection from an IP
> address, it does a reverse look-up in DNS, and then checks the .rhost
> files and so on. DNS spends 30 seconds per nameserver listed in
> /etc/resolv.conf. So you have a broken chain of deligation in your
> reverse tables, an otherwise broken DNS, or your host shouldn't be
> using DNS at all. All on the remote side.
right on Doug!!! you were right !!! thanx... in fact I had correctly
added a new dns when when changed but I never removed the old one
davor
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