Reg : RHEL 5.0 Installatio
Geofrey Rainey
Geofrey.Rainey at tvnz.co.nz
Sun May 3 09:41:13 UTC 2009
1. look in the output of ifconfig and you'll see a "collisions" field
which should have a value of 0.
2. look at the output of either "ethtool <interface>", or mii-tool
<interface>, and you will see what the port speed is. This must match
the port speed of your switch (your network guys will tell you if the
switch is
100Mb or 1000Mb etc).
Look for output like this which says the interface is running at
100Mb/s. This is bad if you're connected to a 1000Mb switch.
Advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
-----Original Message-----
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com] On Behalf Of Ramakrishnan
Seshadhri
Sent: Sunday, 3 May 2009 9:30 p.m.
To: General Red Hat Linux discussion list
Subject: Re: Reg : RHEL 5.0 Installatio
can you please brief how to check that.
Ram.
On Sun, May 3, 2009 at 1:21 PM, Geofrey Rainey
<Geofrey.Rainey at tvnz.co.nz>wrote:
> Look in "ifconfig", are there any collisions on the interface?
>
> Also, perhaps the switch hasn't properly negotiated the speed with
> Your interface?
>
> -----Original Message-----
> From: redhat-list-bounces at redhat.com
> [mailto:redhat-list-bounces at redhat.com] On Behalf Of Ramakrishnan
> Seshadhri
> Sent: Sunday, 3 May 2009 9:18 p.m.
> To: General Red Hat Linux discussion list
> Subject: Re: Reg : RHEL 5.0 Installatio
>
> Actually the problem is here. Once I reboot the server the load is
> around
> 2.8 and I am not able to ping the server (All firewalls are turned
off).
> After sometime I am able to telnet or ping the server. While pinging
it
> drops 50% of packets.
> both telnet and ssh services are enabled.
>
>
> Ram
>
> On Sun, May 3, 2009 at 1:06 PM, Geofrey Rainey
> <Geofrey.Rainey at tvnz.co.nz>wrote:
>
> > Also, what about the outut of the "sar" command without any
arguments?
> >
> > -----Original Message-----
> > From: redhat-list-bounces at redhat.com
> > [mailto:redhat-list-bounces at redhat.com] On Behalf Of Ramakrishnan
> > Seshadhri
> > Sent: Sunday, 3 May 2009 9:01 p.m.
> > To: General Red Hat Linux discussion list
> > Subject: Re: Reg : RHEL 5.0 Installatio
> >
> > Hi,
> >
> >
> > Thanks for the response : Here is my output of "sar -r" command
> >
> > Linux 2.6.18-53.el5PAE (dbbld) 05/03/2009
> >
> > 09:50:01 AM kbmemfree kbmemused %memused kbbuffers kbcached
> kbswpfree
> > kbswpused %swpused kbswpcad
> > 10:00:01 AM 7400868 910644 10.96 141164 590936
> > 10388412 0 0.00 0
> > 10:10:01 AM 7394136 917376 11.04 142056 597464
> > 10388412 0 0.00 0
> > 10:20:01 AM 7394756 916756 11.03 142260 597464
> > 10388412 0 0.00 0
> > 10:30:01 AM 7394632 916880 11.03 142420 597468
> > 10388412 0 0.00 0
> > 10:40:01 AM 7394012 917500 11.04 142668 597488
> > 10388412 0 0.00 0
> > Average: 7395681 915831 11.02 142114 596164
> > 10388412 0 0.00 0
> >
> > 10:46:40 AM LINUX RESTART
> >
> > 10:54:21 AM LINUX RESTART
> >
> > 11:00:01 AM kbmemfree kbmemused %memused kbbuffers kbcached
> kbswpfree
> > kbswpused %swpused kbswpcad
> > 11:10:01 AM 7781624 529888 6.38 97864 300800
> > 10388412 0 0.00 0
> > Average: 7781624 529888 6.38 97864 300800
> > 10388412 0 0.00 0
> >
> > 11:22:15 AM LINUX RESTART
> >
> > 11:38:03 AM LINUX RESTART
> >
> > 11:40:01 AM kbmemfree kbmemused %memused kbbuffers kbcached
> kbswpfree
> > kbswpused %swpused kbswpcad
> > 11:50:01 AM 7780860 530652 6.38 89332 301896
> > 10388412 0 0.00 0
> > Average: 7780860 530652 6.38 89332 301896
> > 10388412 0 0.00 0
> >
> > 11:59:06 AM LINUX RESTART
> >
> > 12:00:02 PM kbmemfree kbmemused %memused kbbuffers kbcached
> kbswpfree
> > kbswpused %swpused kbswpcad
> > 12:10:01 PM 7728928 582584 7.01 135368 303512
> > 10388412 0 0.00 0
> > 12:20:01 PM 7729052 582460 7.01 135484 303516
> > 10388412 0 0.00 0
> > 12:30:01 PM 7728692 582820 7.01 135904 303884
> > 10388412 0 0.00 0
> > 12:40:01 PM 286120 8025392 96.56 121840 7634772
> > 10388412 0 0.00 0
> > 12:50:01 PM 289640 8021872 96.52 50696 7736596
> > 10388408 4 0.00 4
> > Average: 4752486 3559026 42.82 115858 3256456
> > 10388411 1 0.00 1
> >
> >
> > I cant see any swap usage.
> >
> > Ram
> >
> > On Sun, May 3, 2009 at 12:57 PM, Geofrey Rainey
> > <Geofrey.Rainey at tvnz.co.nz>wrote:
> >
> > > Try the following:
> > >
> > > # sar -r (look at how much swap is being used)
> > >
> > > # sar (is the i/o wait column high?)
> > >
> > >
> > > -----Original Message-----
> > > From: redhat-list-bounces at redhat.com
> > > [mailto:redhat-list-bounces at redhat.com] On Behalf Of Ramakrishnan
> > > Seshadhri
> > > Sent: Sunday, 3 May 2009 7:41 p.m.
> > > To: General Red Hat Linux discussion list
> > > Subject: Reg : RHEL 5.0 Installatio
> > >
> > > Hi,
> > >
> > > I have installed RHEL 5 on one of the servers and once the server
> > boots
> > > up
> > > the load average is constantly at 2.8 and server is slow.
> > >
> > > Server is IBM blade by make .
> > >
> > > 8 GB RAM
> > >
> > >
> > > top command does not show any CPR intensive tasks.
> > >
> > > please let me know how to find out what is occupying CPU
> > >
> > >
> > > Ram
> > > --
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