With such a huge difference in timing, I would check if the network is happy. There is a chance that the network card and the other end (switch or other network card, depending how you have it connected) do not agree on the speed.
Have a look at the manual pages for ethtool
You might see the problem in the output of:-
.....adjusting for the appropriate ethernet card. There is quite a bit of output, but you really want to see very low discard values. Anything else suggests that there is a conflict.
You may need to confirm with the network team that all the hops in between are behaving correctly and that you are not getting throttled (quality/class of service) with a packet shaper or other load manager/balancer.
Hello Guru,
I am using a Pro*C program to prepare some reports
usaually the report file size is greater than 1GB.
But nowadays program is very slow.
I found out the program is taking much time to write data to file .....
is there any unix related reason to be slow down, the file writting... (2 Replies)
Hi I am trying to do the following:
run a command that looks at a binary file and formats it
find the first line that has what I am looking for (there will be multiple)
print the name of the file that has it
So I am running this but ti's not working
ls -ltr *20080612* | while read line... (3 Replies)
Hi
I want to split a file that has 'n' number of records into 16 small files.
Can some one suggest me how to do this using Unix script?
Thanks
rrkk (10 Replies)
I got the following info from this forum, in regards to configuring my
Solaris x86 to link to the Net:
# echo 192.168.0.1 > /etc/defaultrouter
# route add default 192.168.0.1
# echo nameserver 192.168.0.1 >> /etc/resolv.conf
# cp /etc/nsswitch.dns /etc/nsswitch.conf
So I did... (1 Reply)
Hi, I facing an NFS problem. I have machine1, which has diskA and diskB, and machine2, both are Mandriva 2009 Linux.
When I am on machine2 and NFS mount both diskA and diskB of machine1. Writing to diskA is very fast, but writing to diskB is very slow. I tried different mount rsize and wsize... (2 Replies)
Hi guys,
I am trying something. I wrote a simple shell program to test something where continuous while loop writes on a file over the nfs. The time taken to write "hello" 3000 times take about 10 sec which is not right. Ideally it should take fraction of seconds. If I write on the local disk, it... (1 Reply)
there are few nas shares that would be mounted on the local zone. should i add an entry into the add an entry in zone.xml file so that it gets mounted automatically when the zone gets rebooted? or whats the correct way to get it mounted automatically when the zone reboots (2 Replies)
Hi,
I am facing chgrp issue for a directory on a NAS mounted partation.
issue details :
user1 belongs to two groups grp1(primary) and grp2(secondary) not able to change directory group to secondary.
WORKING on /tmp
#mkdir /tmp/a
#ls -ld /tmp/a
drwxr-xr-x 2 user1 grp1 117 Mar 24... (7 Replies)
Dear friends,
I have been facing an issue with one of my red hat unix machine, suddenly lost to switch sudo users. My all colleagues lost to switch to access sudo users.
Then, we have realized its related to NAS issue which does not allowing to write the file. because of this we got so many... (1 Reply)
Discussion started by: Chand
1 Replies
LEARN ABOUT XFREE86
veth
veth(4) Linux Programmer's Manual veth(4)NAME
veth - Virtual Ethernet Device
DESCRIPTION
The veth devices are virtual Ethernet devices. They can act as tunnels between network namespaces to create a bridge to a physical network
device in another namespace, but can also be used as standalone network devices.
veth devices are always created in interconnected pairs. A pair can be created using the command:
# ip link add <p1-name> type veth peer name <p2-name>
In the above, p1-name and p2-name are the names assigned to the two connected end points.
Packets transmitted on one device in the pair are immediately received on the other device. When either devices is down the link state of
the pair is down.
veth device pairs are useful for combining the network facilities of the kernel together in interesting ways. A particularly interesting
use case is to place one end of a veth pair in one network namespace and the other end in another network namespace, thus allowing communi-
cation between network namespaces. To do this, one first creates the veth device as above and then moves one side of the pair to the other
namespace:
# ip link set <p2-name> netns <p2-namespace>
ethtool(8) can be used to find the peer of a veth network interface, using commands something like:
# ip link add ve_A type veth peer name ve_B # Create veth pair
# ethtool -S ve_A # Discover interface index of peer
NIC statistics:
peer_ifindex: 16
# ip link | grep '^16:' # Look up interface
16: ve_B@ve_A: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc ...
SEE ALSO clone(2), network_namespaces(7), ip(8), ip-link(8), ip-netns(8)COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the
latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
Linux 2018-02-02 veth(4)