Jobst Schmalenbach
2017-Oct-05 01:41 UTC
[CentOS] Weird bandwith behaviour (download throughput) on CentOS based gateway
Hi. I have a company gateway that is connected to a 30/30 Fiber connection, network termination point is a MRV OS-904. It acts as a firewall/router for the DMZ/hosts/lans behind. Software: CentOS 6.9, bare minimum install, all latest patches. Hardware: Xeon CPU, Intel server MB with two Intel PRO 1000 (e1000, e1000e) network cards, adaptec RAID, 8GB RAM On the hosts/lan behind I can happily achieve 28.8 mbs - it seems it's being capped at that speed by the provider. However, on the host itself I cannot get passed 820k/s max, even if I switch off iptables and anything else that could interfere with the download/upload bandwidth. I have no idea why this is the case - It only matters when I need to "yum update" as the updates take 4 times longer than on the CentOS DMZ hosts behind it - but yes, its rather annoying! Where do I need to look? What am I missing? Jobst -- Passwords are like underwear. You don't share them, you don't hang them on your monitor, or under your keyboard, you don't email them, or put them on a web site, and you must change them very often. | |0| | Jobst Schmalenbach, General Manager | | |0| Barrett & Sales Essentials |0|0|0| +61 3 9533 0000, POBox 277, Caulfield South, 3162, Australia
Clint Dilks
2017-Oct-05 01:57 UTC
[CentOS] Weird bandwith behaviour (download throughput) on CentOS based gateway
On Thu, Oct 5, 2017 at 2:41 PM, Jobst Schmalenbach <jobst at barrett.com.au> wrote:> > Hi. > > I have a company gateway that is connected to a 30/30 Fiber connection, > network termination point is a MRV OS-904. > It acts as a firewall/router for the DMZ/hosts/lans behind. > > Software: CentOS 6.9, bare minimum install, all latest patches. > Hardware: Xeon CPU, Intel server MB with two Intel PRO 1000 (e1000, > e1000e) network cards, adaptec RAID, 8GB RAM > > > On the hosts/lan behind I can happily achieve 28.8 mbs - it seems it's > being capped at that speed by the provider. > > However, on the host itself I cannot get passed 820k/s max, even if I > switch off iptables and anything else that could interfere with the > download/upload bandwidth. > > > I have no idea why this is the case - It only matters when I need to "yum > update" as the updates take 4 times longer than on the CentOS DMZ hosts > behind it - but yes, its rather annoying! > > > Where do I need to look? > What am I missing? > > > >Hi, Are you sure that your issue isn't related to the mirror that your systems are selecting ? If they are using different mirrors I would try using the fastestmirror plugin to make the gateway select the same mirror as you other host.
Jobst Schmalenbach
2017-Oct-05 04:05 UTC
[CentOS] Weird bandwith behaviour (download throughput) on CentOS based gateway
On Thu, Oct 05, 2017 at 02:57:18PM +1300, Clint Dilks (clintd at scms.waikato.ac.nz) wrote:> On Thu, Oct 5, 2017 at 2:41 PM, Jobst Schmalenbach <jobst at barrett.com.au> > wrote: > [snip] > Hi, > > Are you sure that your issue isn't related to the mirror that your > systems are selecting ? If they are using different mirrors I would try > using the fastestmirror plugin to make the gateway select the same mirror > as you other host.Darn!!!! I should have included in the initial email that I actually ran EXTRA tests from a {local} CentOS mirror using wget after I figured there was some differences in the "yum update" times ... The Gateway: [root at GATEWAY /tmp] #>wget http://mirror.internode.on.net/pub/centos/6.9/isos/x86_64/CentOS-6.9-x86_64-bin-DVD1.iso --2017-10-05 14:59:55-- http://mirror.internode.on.net/pub/centos/6.9/isos/x86_64/CentOS-6.9-x86_64-bin-DVD1.iso Resolving mirror.internode.on.net... 150.101.135.3 Connecting to mirror.internode.on.net|150.101.135.3|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 3972005888 (3.7G) [application/octet-stream] Saving to: ???CentOS-6.9-x86_64-bin-DVD1.iso??? 0% [ ] 4,454,198 680K/s One of the hosts behind it: [root at piquet /tmp] #>wget http://mirror.internode.on.net/pub/centos/6.9/isos/x86_64/CentOS-6.9-x86_64-bin-DVD1.iso --2017-10-05 15:01:32-- http://mirror.internode.on.net/pub/centos/6.9/isos/x86_64/CentOS-6.9-x86_64-bin-DVD1.iso Resolving mirror.internode.on.net... 150.101.135.3 Connecting to mirror.internode.on.net|150.101.135.3|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 3972005888 (3.7G) [application/octet-stream] Saving to: `CentOS-6.9-x86_64-bin-DVD1.iso' 0% [ ] 13,616,730 2.4M/s Jobst -- You have junk mail. | |0| | Jobst Schmalenbach, General Manager | | |0| Barrett & Sales Essentials |0|0|0| +61 3 9533 0000, POBox 277, Caulfield South, 3162, Australia
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