search for: jumbos

After successfully getting higher MTU to work on my Realtek NICs, I started testing the impact of higher MTU on file transfers using NFS exported ramdisk to ramdisk. The results were unexpected. The higher the MTU on the sending NIC, the lower the file transfer speed. I tested by using time cp to copy a 1GB file (In case compression might affect the results, so I dd the test file from the CentOS

Hi, I am trying to optimize my gigabit network. I have two Intel 1000 MT Gigabit Server Adapters, which support Jumbo Frames -- as well as a Switch that supports Jumbo Frames. However, I am observing some strange behavior in my file transfers from Windows XP to Linux and I am wondering if it has anything to do with the way the Samba variables are set on my Linux box? The "strange

We are utilizing the xen hypervisor on nexenta with ISCSI as our method of communication with the guests (currently ubuntu but could be moving to centos). Obviously jumbo packet support would be nice to have. The last time I see that on the xen roadmap http://wiki.xensource.com/xenwiki/XenRoadMap . Is there a canonical place that spells out if jumbo frames are now supported or still on the

Hi, Has anyone using CentOS 6 been able to successfully set an mtu larger than 9710 on an interface. I am seeing super jumbo frames with length > 10000. ... IP 10.79.4.53.64327 > 10.79.2.53.24294: Flags [.], seq 16060:29200, ack 1, win 32767, length 13140 ... CentOS release 6.7 (Final) Thanks, -- Stephen Clark *NetWolves Managed Services, LLC.* Director of Technology Phone:

Hi, I have an XCP 0.5 box running a few DomUs some of the DomU''s data is stored at (clustered lvm volumes on) a Coraid etherdrive box which is connected via an Ethernet cable to a dedicated card of the XCP box, for which in the network config I'' ve specified: MTU=9344: xe network-param-list uuid=.... gives: MTU ( RW): 9344 on the DomUs if I leave the MTU at 1500 (default

On 11/09/2015 12:36 PM, Gordon Messmer wrote: > On 11/09/2015 08:34 AM, Steve Clark wrote: >> Has anyone using CentOS 6 been able to successfully set an mtu larger >> than 9710 >> on an interface. > Maximum frame size varies from implementation to implementation: > http://pages.uoregon.edu/joe/jumbo-clean-gear.html > > It's also worth noting that that due to

The documentation says the bridge will work as far as all interfaces have the same MTU, but I also read on this and other mailing lists people having problems when using jumbo frames. What is the current status of jumbo frames support in the bridge? It could also be useful to have the same info on the wiki page. Thanks. -- Luca Lesinigo -------------- next part -------------- An HTML

On the network theme again. The adapters on the management/storage network all default to an mtu of 1500. Are there plans to be able to indicate when a network supports jumbo frames? Cheers, Justin.

Hello, I have 2 network cards on my 2 of my computers that I am trying to transfer data on. The second network cards are specifically for transferring files between the two so I enabled jumble frames by setting the mtu to 9000. I seem to be able to connect between the two via ssh and other methods using this setting so I thought everything was working right until I tried rsync. I used the

When using OCFS2 in a Oracle RAC set, one would configure OCFS2 to use the private interconnect address ( in cluster.conf). Are there any known issues / reasons not to have the private interconnect set up for jumbo frames when using in conjunction with OCFS2 ? Thanks -- -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi, Increasing MTU beyond 1500 in Linux dom0 results in ooopses. I did not find any statement whether 2.0 series support jumbos or not in dom0. Does it? TIA, Teemu -- _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

Hi everyone, I have looked through the list archives and seen a few posts about jumbo frame support, but there is no definitive answer on whether or not it has been tested or is working for anyone. I tried using an MTU of 9000 in a domU and encountered some very interesting and not-so-great results. My machines used in this test are: * NFS (physical) * dom0 (physical) * domU (virtual)

On 11/02/17 06:29, Kevin Stange wrote: > On 01/30/2017 06:41 PM, Kevin Stange wrote: >> On 01/30/2017 06:12 PM, Adi Pircalabu wrote: >>> On 31/01/17 10:49, Kevin Stange wrote: >>>> You said 3.x kernels specifically. The kernel on Xen Made Easy now is a >>>> 4.4 kernel. Any chance you have tested with that one? >>> >>> Not yet, however

Hi, Anyone else noticing any TCP Stack requests for information under a useraccount with mild to moderate TCP activity on HTTP and other sorts of ports returns zero results back unless you are root. [site@Eden ~]$ netstat -i reports netstat: kvm not available: /dev/mem: Permission denied ifnet: symbol not defined [site@Eden ~]$ netstat -an [site@Eden ~]$ netstat -m 377/823/1200 mbufs in use

On Fri, January 23, 2015 12:54 pm, Patrick Flaherty wrote: >> >> I do have two centos 6.6 servers. With a "performance optimized" rsync I >> get an speed of 15 - 20 MB/s >> >> The options I use are: >> >> rsync -aHAXxv --numeric-ids --progress -e "ssh -T -c arcfour -o >> Compression=no -x" >> >> If I copy files by smb

On 11/09/2015 08:34 AM, Steve Clark wrote: > > Has anyone using CentOS 6 been able to successfully set an mtu larger > than 9710 > on an interface. Maximum frame size varies from implementation to implementation: http://pages.uoregon.edu/joe/jumbo-clean-gear.html It's also worth noting that that due to offloading features in modern NICs, there's often very little benefit

We have a cluster (212 nodes) that are on a gig-e network useing jumbo frames (mtu 6000) To reload a node we have to plug it into a regular 1500 mtu that is running off a differnt port on the head node to install. Is there a way to tell in the 'append' line of /pxelinux.cfg/default to have the bcm5700 module run wiht jumbo frames. this is our append right now append load_ramdisk=1

I would like to use jumbo frame for local interfaces, but I am not sure in which order to set it up. Should it be set on the physical interface first, then on the bridge and on the guest, or in another way? On some servers there are configurations with vlan on the bridge

Author: mabloom Repository: /hg/zfs-crypto/gate Revision: 39c5623029b347adbf2ab92400d25328f7b321ee Log message: 5084264 Error messages output when configure jumbo frames using bge.conf Files: update: usr/src/uts/common/io/pci_pci/pci_pci.c

Hi, ¿ I would like to know how can I use Gigabit Jumbo Frames inside Xen ? I''ve set my eth0 and peth0 mtu to 7000 My question is : Do I should set the mtu inside each domU ? Regards _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users