Reg : RHEL 5.0 Installatio
Geofrey Rainey
Geofrey.Rainey at tvnz.co.nz
Sun May 3 10:31:36 UTC 2009
Weird, you shouldn't be getting any packet loss at all. I wonder if
there's
Some faulty network device? Try these tests:
1. Ping from yourself to yourself; ping localhost, and ping the proper
qualified domain name - do you get any drops then?
2. Ping from another host on the same subnet, do you get any drops then?
3. ping from a host on a different subnet.
(also, in future be weary of transmitting lots of information about your
servers to a mailing list, your info might be posted on the internet -
just be mindful of that).
-----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 10:25 p.m.
To: General Red Hat Linux discussion list
Subject: Re: Reg : RHEL 5.0 Installatio
Yes during ping, packets are dropped. It gives like the one below
[root at dbbld u02]# ping dbbld.domain.com
PING appsbld.pharmatrade.pharmatrade.com (132.1.1.126) 56(84) bytes of
data.
64 bytes from dbbld.domain.com (132.1.1.126): icmp_seq=2 ttl=64
time=0.122
ms
64 bytes from dbbld.domain.com (132.1.1.126): icmp_seq=3 ttl=64
time=0.090
ms
64 bytes from dbbld.domain.com (132.1.1.126): icmp_seq=4 ttl=64
time=0.099
ms
64 bytes from dbbld.domain.com (132.1.1.126): icmp_seq=5 ttl=64
time=0.091
ms
64 bytes from dbbld.domain.com (132.1.1.126): icmp_seq=6 ttl=64
time=0.095
ms
--- dbbld.domain.com ping statistics ---
6 packets transmitted, 5 received, 16% packet loss, time 5000ms
rtt min/avg/max/mdev = 0.090/0.099/0.122/0.014 ms
I have all host entries in place and servers registered in DNS
Here is the output of "sar -q"
[root at dbbld u02]# sar -q
Linux 2.6.18-53.el5PAE (dbbld) 05/03/2009
09:50:01 AM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15
10:00:01 AM 0 189 0.12 0.08 0.06
10:10:01 AM 0 185 0.01 0.04 0.04
10:20:01 AM 0 183 0.09 0.05 0.02
10:30:01 AM 0 183 0.04 0.05 0.00
10:40:01 AM 0 185 0.05 0.06 0.00
Average: 0 185 0.06 0.06 0.02
10:46:40 AM LINUX RESTART
10:54:21 AM LINUX RESTART
11:00:01 AM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15
11:10:01 AM 0 173 0.03 0.12 0.21
Average: 0 173 0.03 0.12 0.21
11:22:15 AM LINUX RESTART
11:38:03 AM LINUX RESTART
11:40:01 AM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15
11:50:01 AM 0 189 0.61 0.72 0.53
Average: 0 189 0.61 0.72 0.53
11:59:06 AM LINUX RESTART
12:00:02 PM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15
12:10:01 PM 0 189 0.24 1.20 0.96
12:20:01 PM 0 188 0.09 0.22 0.52
12:30:01 PM 0 188 0.04 0.06 0.28
12:40:01 PM 0 195 3.19 1.54 0.83
12:50:01 PM 0 191 2.69 1.37 0.96
01:00:02 PM 0 192 0.15 0.73 0.82
Average: 0 190 1.07 0.85 0.73
01:04:33 PM LINUX RESTART
01:10:01 PM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15
01:20:01 PM 0 186 2.66 2.47 1.67
01:30:01 PM 0 176 2.58 2.64 2.12
Average: 0 181 2.62 2.56 1.90
01:55:25 PM LINUX RESTART
02:00:01 PM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15
02:10:01 PM 0 172 1.84 1.75 1.16
02:20:01 PM 0 171 1.84 1.84 1.47
Average: 0 172 1.84 1.79 1.31
Ram
On Sun, May 3, 2009 at 2:18 PM, Geofrey Rainey
<Geofrey.Rainey at tvnz.co.nz>wrote:
> That logical volume for swap is pretty weird, no point in having that
> there I think, but not to worry for the moment, I don't think it would
> cause issues like you're experiencing.
>
> What's the output of "sar -q".
>
> Also, if you ping the server any other time does it always drop
packets?
>
> -----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 10:13 p.m.
> To: General Red Hat Linux discussion list
> Subject: Re: Reg : RHEL 5.0 Installatio
>
> Here is the output for swapon -s
>
> [root at dbbld ~]# swapon -s
> Filename Type Size Used
> Priority
> /dev/mapper/VolGroup00-LogVol01 partition 950264 0
> -1
> /dev/sda5 partition 9438148 0
> -2
>
>
> Ram
>
> On Sun, May 3, 2009 at 2:10 PM, Geofrey Rainey
> <Geofrey.Rainey at tvnz.co.nz>wrote:
>
> > I wouldn't worry about that zombie. What about my earlier question
> about
> > The output of swapon -s?
> >
> >
> > -----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 10:03 p.m.
> > To: General Red Hat Linux discussion list
> > Subject: Re: Reg : RHEL 5.0 Installatio
> >
> > Hi,
> >
> >
> > I can see that there is a Zonbie
> >
> > [root at dbbld etc]# ps -ef | grep ifup-eth
> > root 14335 3476 1 14:02 ? 00:00:00 [ifup-eth] <defunct>
> > root 14362 6988 0 14:02 pts/2 00:00:00 grep ifup-eth
> >
> > what is this process. I am not able to kill this.
> >
> >
> > Ram.S
> >
> > On Sun, May 3, 2009 at 1:59 PM, Ramakrishnan Seshadhri <
> > ramakrishnan42 at gmail.com> wrote:
> >
> > > Hi
> > >
> > > Here is the ifconfig report below
> > >
> > > [root at dbbld ~]# ifconfig
> > > bond0 Link encap:Ethernet HWaddr 00:21:5E:2D:90:5E
> > > inet addr:132.1.1.125 Bcast:132.1.255.255
> Mask:255.255.0.0
> > > inet6 addr: fe80::221:5eff:fe2d:905e/64 Scope:Link
> > > UP BROADCAST RUNNING MASTER MULTICAST MTU:1500
Metric:1
> > > RX packets:1150 errors:0 dropped:0 overruns:0 frame:0
> > > TX packets:961 errors:0 dropped:0 overruns:0 carrier:0
> > > collisions:0 txqueuelen:0
> > > RX bytes:93435 (91.2 KiB) TX bytes:87481 (85.4 KiB)
> > >
> > > eth0 Link encap:Ethernet HWaddr 00:21:5E:2D:90:5E
> > > inet6 addr: fe80::221:5eff:fe2d:905e/64 Scope:Link
> > > UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
> > > RX packets:1150 errors:0 dropped:0 overruns:0 frame:0
> > > TX packets:961 errors:0 dropped:0 overruns:0 carrier:0
> > > collisions:0 txqueuelen:1000
> > > RX bytes:93435 (91.2 KiB) TX bytes:87481 (85.4 KiB)
> > > Interrupt:114 Memory:da000000-da012100
> > >
> > > eth1 Link encap:Ethernet HWaddr 00:21:5E:2D:90:60
> > > UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
> > > RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> > > TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
> > > collisions:0 txqueuelen:1000
> > > RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
> > > Interrupt:82 Memory:d8000000-d8012100
> > >
> > > lo Link encap:Local Loopback
> > > inet addr:127.0.0.1 Mask:255.0.0.0
> > > inet6 addr: ::1/128 Scope:Host
> > > UP LOOPBACK RUNNING MTU:16436 Metric:1
> > > RX packets:2776 errors:0 dropped:0 overruns:0 frame:0
> > > TX packets:2776 errors:0 dropped:0 overruns:0 carrier:0
> > > collisions:0 txqueuelen:0
> > > RX bytes:3321472 (3.1 MiB) TX bytes:3321472 (3.1 MiB)
> > >
> > > the collision field is zero. But the TX is bytes:87481. There are
> Two
> > NIC
> > > configured to the Virtual IP bond0. Is there a problem there.
> > > Is there a log while where I could check the errors.
> > >
> > > Ram
> > >
> > >
> > > On Sun, May 3, 2009 at 1:41 PM, Geofrey Rainey
> > <Geofrey.Rainey at tvnz.co.nz>wrote:
> > >
> > >> 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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