Fri, 21 Sep 2018 09:03:39 +1200 Hey Ben, Good to hear that you're going to continue with Linux VServer for this release cycle. I was just pondering last night if I should consider starting the migration process to LXC, I'll hold off for now! Cheers, Andrew On Thu, 2018-09-20 at 20:34 +0100, Ben Green wrote: > Hi Andrew, > > great you got that sorted. I'll hopefully be able to be a bit more > pro-active with the builds for Stretch, and for Buster, as we've > decided not to roll out LXC to productions servers for this release > cycle. > > Cheers, > Ben > > > Quoting Andrew Ruthven <andrew.ruthven@catalyst.net.nz>: > > > I decided to try the latest 4.9 kernel again tonight and I tracked > > down > > the performance issue I was seeing. iostat was showing one hard > > drive > > with utterly terribly wait times, and even running smartctl against > > that drive was epically slow (all other drives ran normally). > > > > Turns out there was a dodgy SATA cable for that drive. After > > swapping > > the cable, I/O on the machine is back to what it should be! > > > > At a guess something has changed in the SATA drivers between 4.1.x > > and > > 4.9.y and that change of behaviour triggered the issue I was > > observing. > > > > Ben, thank you for publishing your kernels! > > > > Cheers, > > Andrew > > > > > > -- Andrew Ruthven, Wellington, New Zealand Data Centre Manager MIITP, CITPNZ At work: andrew.ruthven@catalyst.net.nz At home: andrew@etc.gen.nz Card : http://qr.catalyst.net.nz/907675e1 Cloud : https://catalystcloud.nz GPG fpr: C603 FC4E 600F 1CEC D1C8 D97C 4B53 D931 E4D3 E863 LCA2019: https://lca2019.linux.org.au