[Kernel-packages] [Bug 2059316] Re: backport arm64 THP improvements from 6.9
** Also affects: linux-nvidia (Ubuntu) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Noble) Importance: Undecided Status: New ** Also affects: linux-nvidia (Ubuntu Noble) Importance: Undecided Status: New -- 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/2059316 Title: backport arm64 THP improvements from 6.9 Status in linux package in Ubuntu: In Progress Status in linux-nvidia package in Ubuntu: New Status in linux source package in Noble: New Status in linux-nvidia source package in Noble: New Bug description: Initial support for multi-size THP landed upstream in v6.8. In the 6.9 merge window, 2 other series have landed that show significant performance improvements on arm64 mm/memory: optimize fork() with PTE-mapped THP https://lkml.iu.edu/hypermail/linux/kernel/2401.3/02766.html Transparent Contiguous PTEs for User Mappings: https://lwn.net/Articles/962330/ On an Ampere AltraMax system w/ 4K page size, kernel builds in a tmpfs are reduced from 6m30s to 5m17s, a ~19% improvement. It has been reported that this can have a *10x* improvement for certain GPU workloads on ARM: https://lwn.net/Articles/954094/ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2059316/+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
[Kernel-packages] [Bug 2059316] Re: backport arm64 THP improvements from 6.9
I've build-tested on all architectures in this PPA: https://launchpad.net/~dannf/+archive/ubuntu/mthp/+packages I manually tested on a few systems, timing a full kernel build w/ the Ubuntu config in a tmpfs (both to stress the system, and look for performance differences). - ppc64el / Power9 - no performance difference - x86 - AMD EPYC/Naples - 11% improvement - Ampere AltraMax (-generic) - 19% improvement ** Description changed: Initial support for multi-size THP landed upstream in v6.8. In the 6.9 merge window, 2 other series have landed that show significant performance improvements on arm64 mm/memory: optimize fork() with PTE-mapped THP - https://lkml.iu.edu/hypermail/linux/kernel/2401.3/02766.html + https://lkml.iu.edu/hypermail/linux/kernel/2401.3/02766.html Transparent Contiguous PTEs for User Mappings: - https://lwn.net/Articles/962330/ + https://lwn.net/Articles/962330/ On an Ampere AltraMax system w/ 4K page size, kernel builds in a tmpfs are reduced from 6m30s to 5m17s, a ~19% improvement. + + It has been reported that this can have a *10x* improvement for certain + GPU workloads on ARM: + + https://lwn.net/Articles/954094/ -- 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/2059316 Title: backport arm64 THP improvements from 6.9 Status in linux package in Ubuntu: In Progress Bug description: Initial support for multi-size THP landed upstream in v6.8. In the 6.9 merge window, 2 other series have landed that show significant performance improvements on arm64 mm/memory: optimize fork() with PTE-mapped THP https://lkml.iu.edu/hypermail/linux/kernel/2401.3/02766.html Transparent Contiguous PTEs for User Mappings: https://lwn.net/Articles/962330/ On an Ampere AltraMax system w/ 4K page size, kernel builds in a tmpfs are reduced from 6m30s to 5m17s, a ~19% improvement. It has been reported that this can have a *10x* improvement for certain GPU workloads on ARM: https://lwn.net/Articles/954094/ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2059316/+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
[Kernel-packages] [Bug 2059316] Re: backport arm64 THP improvements from 6.9
** Changed in: linux (Ubuntu) Status: New => In Progress -- 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/2059316 Title: backport arm64 THP improvements from 6.9 Status in linux package in Ubuntu: In Progress Bug description: Initial support for multi-size THP landed upstream in v6.8. In the 6.9 merge window, 2 other series have landed that show significant performance improvements on arm64 mm/memory: optimize fork() with PTE-mapped THP https://lkml.iu.edu/hypermail/linux/kernel/2401.3/02766.html Transparent Contiguous PTEs for User Mappings: https://lwn.net/Articles/962330/ On an Ampere AltraMax system w/ 4K page size, kernel builds in a tmpfs are reduced from 6m30s to 5m17s, a ~19% improvement. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2059316/+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
[Kernel-packages] [Bug 2059316] Re: backport arm64 THP improvements from 6.9
** Changed in: linux (Ubuntu) Assignee: (unassigned) => dann frazier (dannf) -- 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/2059316 Title: backport arm64 THP improvements from 6.9 Status in linux package in Ubuntu: New Bug description: Initial support for multi-size THP landed upstream in v6.8. In the 6.9 merge window, 2 other series have landed that show significant performance improvements on arm64 mm/memory: optimize fork() with PTE-mapped THP https://lkml.iu.edu/hypermail/linux/kernel/2401.3/02766.html Transparent Contiguous PTEs for User Mappings: https://lwn.net/Articles/962330/ On an Ampere AltraMax system w/ 4K page size, kernel builds in a tmpfs are reduced from 6m30s to 5m17s, a ~19% improvement. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2059316/+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
