We realized that this likely affects older controllers using the cciss driver as well, updated udev rule for completeness.
** Attachment added: "90-smartarray-limitiosize.rules" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1668557/+attachment/4828905/+files/90-smartarray-limitiosize.rules -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1668557 Title: Write performance regression severely affecting hpsa controllers Status in linux package in Ubuntu: Invalid Bug description: Upgrading our HP(E) servers to xenial we have discovered a severe performance regression affecting write performance on Smart Array RAID logical drives. Firmware is up to date with latest HPE SPP release at the time of testing. This performance regression has been verified on multiple sites with different HPE systems and OS:s, downgrading kernel brings back the expected performance. We are NOT seeing this on Dell hardware with H730P (LSI based) controllers, using the same OS installs. Our test system setup: Ubuntu 16.04.2 LTS Server: HP(E) DL380e, 36 G RAM, 1x E5-2420 CPU RAID Controller: Smart Array P420 2GB FBWC RAID setup: 24x 500G SAS HDDs in RAID50 with 2 parity groups. File system: xfs We are also seeing this issue on setups using DL380e with P430 controller and 14 HDDs in RAID6, but those systems are not available for testing. Fast/normal (previous) bulk IO performance is approx 1600-1800 MB/s sustained read and write using a simple dd bs=256k based test. Slow/performance regression reduces the write performance to approx 500-600 MB/s sustained using the same tests and filesystem. We have tested using the following OS installs and kernels: Precise: All tested Ubuntu kernels are fast. Trusty: trusty 3.13.0.110.118 fast utopic 3.16.0.77.68 fast vivid 3.19.0.80.62 slow xenial 4.4.0.64.50 slow Xenial: xenial 4.4.0.64.68 slow hwe 4.8.0.39.10 slow mainline 3.12.64-031264.201610030943 fast mainline 3.16.41-031641.201702270232 fast mainline 3.17.8-031708.201501081837 fast mainline 3.18.0-031800.201412071935 fast mainline 3.18.12-031812.201504221338 fast mainline 3.18.18-031818.201507101433 fast mainline 3.18.21-031821.201509020527 fast mainline 3.18.22-031822.201510031227 slow mainline 3.18.23-031823.201510291931 slow mainline 3.18.24-031824.201511031331 slow mainline 3.18.47-031847.201701181631 slow mainline 4.10.1-041001.201702260735 slow --- AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Feb 28 10:29 seq crw-rw---- 1 root audio 116, 33 Feb 28 10:29 timer AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: DistroRelease: Ubuntu 16.04 IwConfig: Error: [Errno 2] No such file or directory MachineType: HP ProLiant DL380e Gen8 Package: linux (not installed) PciMultimedia: ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-64-generic root=/dev/mapper/rootvg-rootlv ro console=ttyS0,115200n8 noquiet nosplash nomodeset ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44 RelatedPackageVersions: linux-restricted-modules-4.4.0-64-generic N/A linux-backports-modules-4.4.0-64-generic N/A linux-firmware 1.157.8 RfKill: Error: [Errno 2] No such file or directory Tags: xenial xenial Uname: Linux 4.4.0-64-generic x86_64 UnreportableReason: The report belongs to a package that is not installed. UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: False dmi.bios.date: 08/02/2014 dmi.bios.vendor: HP dmi.bios.version: P73 dmi.chassis.type: 23 dmi.chassis.vendor: HP dmi.modalias: dmi:bvnHP:bvrP73:bd08/02/2014:svnHP:pnProLiantDL380eGen8:pvr:cvnHP:ct23:cvr: dmi.product.name: ProLiant DL380e Gen8 dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1668557/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
