| cpaelzer | good morning | 06:27 |
|---|---|---|
| lordievader | Good morning | 07:00 |
| cpaelzer | g'morning lordievader | 07:39 |
| cpaelzer | better late than never :-) | 07:39 |
| lordievader | Hey cpaelzer | 07:54 |
| lordievader | How are you doing? | 07:54 |
| cpaelzer | the same as always I guess (today doesn't feel special) | 07:54 |
| cpaelzer | and you? | 07:54 |
| lordievader | Doing good here, got coffee | 07:55 |
| law | hey all, when installing Xenial over net-install (iPXE) in UEFI mode, the installer seems to run just fine, but I get a black screen post-boot (right where GRUB should be) | 09:07 |
| law | is there a preferred way to net-install Xenial in UEFI? | 09:07 |
| law | I don't believe it's a hardware problem, because I can BIOS-compat-mode install just fine | 09:09 |
| law | this is on a Dell R630 | 09:09 |
| zioproto | hello | 09:09 |
| zioproto | How could I figure out if the kernel package 4.4.0.116.122 from xenial-proposed includes the fix from LP 1738219 ? | 09:10 |
| ubottu | Launchpad bug 1738219 in linux (Ubuntu Bionic) "the kernel is blackholing IPv6 packets to linkdown nexthops" [Medium,In progress] https://launchpad.net/bugs/1738219 | 09:10 |
| ZombyWoof | I want to install Ubuntu server and afterwards install a desktop env. When I don't start the GUI (but it is present on the system) will the server still be less lean than without the installed GUI? I'm talking about procesor time, not disk space. | 13:28 |
| patdk-lap | yes | 13:32 |
| patdk-lap | there are non-gui parts that desktop installs | 13:32 |
| patdk-lap | will it be noticable? shouldn't be | 13:33 |
| rbasak | "install a desktop env" will install those though | 13:33 |
| rbasak | Depends on what you mean exactly by "start the GUI". | 13:33 |
| rbasak | If you're asking if boot time (in terms of CPU) will be less what you don't "start the GUI", then the answer is obviously yes. | 13:34 |
| ZombyWoof | it's for a home nas, but from time to time i want to be able to browse and other things, because the computer is in another room where there are no kids, so piecefull and quite :D | 13:34 |
| ZombyWoof | so in normal mode i only want it to be in console mode | 13:34 |
| rbasak | Why? | 13:35 |
| rbasak | What benefit is there to it being in console mode? | 13:35 |
| ZombyWoof | it stays on the whole day, so I think it's a waste of energy if it consumes (lot) more because I intalled the desktop packages | 13:35 |
| rbasak | It won't use any more energy on an ongoing basis. | 13:35 |
| rbasak | Waiting on a desktop login screen should use no additional CPU whatsoever. | 13:36 |
| ZombyWoof | good, even if it stays in GUI mode? | 13:36 |
| ZombyWoof | nice, thanks for that info | 13:36 |
| rbasak | You might want to measure it to be sure though. I'm not accounting for any bugs. | 13:36 |
| rbasak | I suppose once a minute it might bump a clock up or something. But that'd probably be an insigificant and unmeasureable amount of CPU in terms of energy costs. | 13:37 |
| ZombyWoof | hehe, it's not that big of an issue, but when the cpu starts consuming 100% more power it is | 13:37 |
| rbasak | It should definitely not be doing that. | 13:37 |
| rbasak | If it does, it's a bug. | 13:38 |
| rbasak | I'm not aware of any such issue though. I expect we'd get reports quite quickly if that were to happen. | 13:38 |
| ZombyWoof | ok, then I just leave it on GUI login. thanks for the info! | 13:38 |
| jamespage | coreycb: OK so I've done some further repacking on the pxc-5.7 tarball and I'm pretty happy with it - I'd like to merge jp-review-fixes into master and then upload for bionic if you're good with that? | 13:40 |
| coreycb | jamespage: i think so. did you see my latest change to xtrabackup for boost? | 13:42 |
| coreycb | jamespage: i still need to test that ^ | 13:43 |
| jamespage | coreycb: I had not | 13:43 |
| coreycb | jamespage: your latest changes look good. I think we just need to align the boost changes. | 13:45 |
| patdk-lap | firefox is always using 100% cpu :( | 13:48 |
| === rharper` is now known as rharper | ||
| coreycb | jamespage: i'm working through the rc2's | 18:02 |
| jamespage | coreycb: good man | 18:03 |
| jamespage | coreycb: I've tested my latest pxc-57 - works OK - slightly unhappy with the internal server versioning | 18:03 |
| jamespage | coreycb: but its the same as with -56 so not going to stress - that's polish now... | 18:05 |
| coreycb | jamespage: ok | 18:06 |
| jamespage | coreycb, cpaelzer: ovs 2.9.0 uploaded to bionic btw | 18:19 |
| coreycb | jamespage: awesome | 18:19 |
| cpaelzer | great jamespage | 18:53 |
| cpaelzer | jamespage: I see no new OVS in proposed btw | 18:54 |
| cpaelzer | ok it is the arm build that stalls | 18:54 |
| cpaelzer | https://launchpad.net/ubuntu/+source/openvswitch/2.9.0-0ubuntu1 seems good so far | 18:54 |
| Tulitomaatti | any good guesses why gbit ethernet seems to give only ~400-500mbits/s on 16.04.3 servers? same switch with same cables/ports have been tested to get ~940mbits/s between my laptop and a debian host. ...can it be that the NICs are just crappy? | 19:06 |
| Tulitomaatti | (all cables less than 2m long, cat5e or cat6) | 19:06 |
| Tulitomaatti | i found some threads on the r8169 driver being buggy, but those mainly seem to roll about getting 1000mbit link speed negotiated to start with. | 19:08 |
| Tulitomaatti | ethtool is showing full duplex and 1000 speed just fine. | 19:08 |
| sarnold | Tulitomaatti: realtek isn't know for high-quality drivers :/ how are you testing? maybe you need larger window sizes or similar? | 19:16 |
| Tulitomaatti | default iperf with plain -s / -c. though, those do get me 940 between other devices than the 4 identical nodes i'm debugging. | 19:17 |
| Tulitomaatti | lshw shows that the NIC is on a "82801 Mobile PCI Bridge" instead of the other stuff on "NM10/ICH7 Family PCI Express Port 1" | 19:22 |
| Tulitomaatti | could a mobo maker slam a gbit nic on a bus that is slower than gbit? sounds unlikely. iperf to localhost gives over 5gbits/s. | 19:23 |
| sarnold | I'd certainly hope a pci bridge could keep up with gigabit, that's pretty slow these days .. but maybe if they figured the average internet connection is 30mbps that no one would notice :( | 19:32 |
| ahasenack | Tulitomaatti: could the spectre fixes have anything to do with the degraded performance? | 19:36 |
| ahasenack | do you have data from before those updates? Or, do the machines which perform better have these security fixes applied? | 19:36 |
| Tulitomaatti | i installed these about last week, so no data there. IIRC these atoms are old enough not to be affected by one of those bugs. | 19:38 |
| Tulitomaatti | (d2550) | 19:38 |
| Tulitomaatti | i guess i could try to boot to a live system of something else and see if the problem persists. | 19:39 |
| ahasenack | yes | 19:39 |
| Tulitomaatti | any recommendations? | 19:39 |
| ahasenack | whatever debian and your laptop are running that gave you 940mbps? | 19:39 |
| Tulitomaatti | os x on the laptop. but i guess debian should be fine as the server that works with 940 with the laptop is debian. | 19:43 |
| Tulitomaatti | was asking just in case a some kind of ultimate network debugging image livedistro was floating around, that i didn't know about. | 19:43 |
| sdeziel | Tulitomaatti: I'm fairly certain that those old atom boxes are affected by meltdown at least so there is KPTI that could get in the way | 19:53 |
| Tulitomaatti | mm. – the debian server is an even older atom (d510? pineview?). that being said, is there an easy way to see? iperf seems to take about... 56% cpu according to top, while transmitting. | 19:56 |
| Tulitomaatti | (on one of the ubuntu nodes) | 19:57 |
| Pinkamena_D | I have a server acting as nfs client. I want to mount /home to a location in a nfs drive [server:/opt/home] , But the root of the nfs drive will be elsewhere [server:/opt mounted to client:/opt]. Should I have two lines in fstab, one for the /opt mount and one for the /opt/home mount, or should I have only the /opt mount, and symlink /home to the location inside? | 21:24 |
| Tulitomaatti | seems like it's not ubuntu-specific, or 4.13.0 specific: an ubuntu live image with 4.9.0 kernel also gets only "half" of the bandwidth that should be there. | 21:34 |
| Tulitomaatti | i'm starting to guess at either crappy NIC or horrible drivers. or both. | 21:34 |
| ahasenack | Pinkamena_D: if I uncerstood you correctly, you are exporting both /opt and /opt/home separatedly from the server? | 22:00 |
| ahasenack | or is that part of the question, if you should? | 22:00 |
| Pinkamena_D | ahasenack: part of the question | 22:11 |
| ahasenack | I think I would mount both separatedly on the client | 22:11 |
| Pinkamena_D | First instinct would be to use a symlink to home, but I am struggling to think how exactly to create it onto a location I can not overwrite /home | 22:11 |
| Pinkamena_D | Ok, I guess that is a logical solution | 22:12 |
| ahasenack | try it out, maybe the experiment will give you more data | 22:12 |
| ahasenack | you could also change the user's default homedir to be /opt/home | 22:12 |
| Pinkamena_D | I am not in control of the server directly, but I found I can just mount two location like that when just the outer mountpoint is presented explicitly on the server | 22:12 |
| Pinkamena_D | so it definitly 'works', I just wanted to check best practice | 22:13 |
| ahasenack | so the server is exporting just /opt? | 22:14 |
| Pinkamena_D | yes | 22:14 |
| ahasenack | but you can mount server:/opt/home /home ? | 22:14 |
| Pinkamena_D | yup | 22:14 |
| ahasenack | interesting, I didn't know that | 22:14 |
| Pinkamena_D | Is that not supposed to work? Not sure lol | 22:14 |
| Pinkamena_D | I guess good to learn | 22:14 |
| ahasenack | how do you know the server is exporting just /opt, you checked its /etc/exports file? | 22:15 |
| ahasenack | or did you run showmount against it? showmount -e iirc | 22:15 |
| Pinkamena_D | no, I just trusted the server admin about it. I will look up how to use showmount to satifsy curiousity... | 22:16 |
| Pinkamena_D | can it work from the client? | 22:16 |
| ahasenack | it's supposed to | 22:17 |
| Pinkamena_D | I see a result like "/opt *" So I guess that answers it | 22:20 |
| === strive is now known as emerge | ||
| === emerge is now known as strive | ||
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