January 2024 - openSUSE Kernel Bugs - openSUSE Mailing Lists

[Bug 1219284] increased ram usage after upgrading from 6.6.x to 6.7.x
by bugzilla_noreply＠suse.com 30 Jan '24

30 Jan '24

https://bugzilla.suse.com/show_bug.cgi?id=1219284 https://bugzilla.suse.com/show_bug.cgi?id=1219284#c15 --- Comment #15 from Michal Hocko <mhocko(a)suse.com> --- (In reply to Daniel Wagner from comment #14) > Ah Thorsten Leemhuise corrected himself, it seems to be > > 4ef9ad19e17676 ("mm: huge_memory: don't force huge page alignment on 32 > bit") > > but according some testing by the Arch folks it is not a complete fix. I can see how this can over consume on thread's stacks because those are usually 2MB in size by default (by glibs) and the alignment would make it more likely THP target. I do not see THP would consume all the additional memory, though. Runtime overhead is likely a more likely visible effect. That being said. No objection to taking the patch from my end. -- You are receiving this mail because: You are the assignee for the bug.

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[Bug 1219284] increased ram usage after upgrading from 6.6.x to 6.7.x
by bugzilla_noreply＠suse.com 30 Jan '24

30 Jan '24

https://bugzilla.suse.com/show_bug.cgi?id=1219284 https://bugzilla.suse.com/show_bug.cgi?id=1219284#c14 --- Comment #14 from Daniel Wagner <daniel.wagner(a)suse.com> --- Ah Thorsten Leemhuise corrected himself, it seems to be 4ef9ad19e17676 ("mm: huge_memory: don't force huge page alignment on 32 bit") but according some testing by the Arch folks it is not a complete fix. -- You are receiving this mail because: You are the assignee for the bug.

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[Bug 1219284] increased ram usage after upgrading from 6.6.x to 6.7.x
by bugzilla_noreply＠suse.com 30 Jan '24

30 Jan '24

https://bugzilla.suse.com/show_bug.cgi?id=1219284 https://bugzilla.suse.com/show_bug.cgi?id=1219284#c13 --- Comment #13 from Daniel Wagner <daniel.wagner(a)suse.com> --- apparently the fix is: c4608d1bf7c653 ("mm: mmap: map MAP_STACK to VM_NOHUGEPAGE") -- You are receiving this mail because: You are the assignee for the bug.

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[Bug 1218283] New: Building ZFS for 15.6 and Tumbleweed broken by kernel_neon_begin changed from EXPORT_SYMBOL_GPL EXPORT_SYMBOLto
by bugzilla_noreply＠suse.com 30 Jan '24

30 Jan '24

https://bugzilla.suse.com/show_bug.cgi?id=1218283 Bug ID: 1218283 Summary: Building ZFS for 15.6 and Tumbleweed broken by kernel_neon_begin changed from EXPORT_SYMBOL_GPL EXPORT_SYMBOLto Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-bugs(a)opensuse.org Reporter: dheidler(a)suse.com QA Contact: qa-bugs(a)suse.de Target Milestone: --- Found By: --- Blocker: --- Fail: https://build.opensuse.org/package/live_build_log/filesystems/zfs/openSUSE_… [ 259s] ERROR: modpost: GPL-incompatible module zfs.ko uses GPL-only symbol 'kernel_neon_end' [ 259s] ERROR: modpost: GPL-incompatible module zfs.ko uses GPL-only symbol 'kernel_neon_begin' Upstream tracks the issue here https://github.com/openzfs/zfs/issues/15401 and here https://github.com/openzfs/zfs/issues/14555 It could be fixed by reverting this kernel patch: https://github.com/torvalds/linux/commit/aaeca98456431a8d9382ecf48ac4843e25… -- You are receiving this mail because: You are the assignee for the bug.

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[Bug 1219284] increased ram usage after upgrading from 6.6.x to 6.7.x
by bugzilla_noreply＠suse.com 30 Jan '24

30 Jan '24

https://bugzilla.suse.com/show_bug.cgi?id=1219284 https://bugzilla.suse.com/show_bug.cgi?id=1219284#c12 --- Comment #12 from Andrea Manzini <andrea.manzini(a)suse.com> --- all the measurements were taken from the same fresh installed tumbleweed virtual machine with XFCE desktop environment, so same userspace. Just did these action to reproduce: - boot choosing the 6.6 kernel - start the DE - open a terminal to run commands - reboot - choose 6.7 kernel - start the DE - open a terminal to run commands -- You are receiving this mail because: You are the assignee for the bug.

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[Bug 1219284] increased ram usage after upgrading from 6.6.x to 6.7.x
by bugzilla_noreply＠suse.com 30 Jan '24

30 Jan '24

https://bugzilla.suse.com/show_bug.cgi?id=1219284 https://bugzilla.suse.com/show_bug.cgi?id=1219284#c11 --- Comment #11 from Michal Hocko <mhocko(a)suse.com> --- 6.6 AnonPages: 492536 kB AnonHugePages: 264192 kB 6.7 AnonPages: 770116 kB AnonHugePages: 399360 kB There is much more anonymous memory used in 6.7 kernel (~270MB). Daniel has already mentioned that this might be THP related but only part of it can be contributed to that (135MB). So some userspace had to consume more memory with the newer kernel which is rather unexpected. Are you sure you are comparing the exactly same userspace here? -- You are receiving this mail because: You are the assignee for the bug.

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[Bug 1219284] increased ram usage after upgrading from 6.6.x to 6.7.x
by bugzilla_noreply＠suse.com 30 Jan '24

30 Jan '24

https://bugzilla.suse.com/show_bug.cgi?id=1219284 https://bugzilla.suse.com/show_bug.cgi?id=1219284#c10 Takashi Iwai <tiwai(a)suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mhocko(a)suse.com, | |tiwai(a)suse.com, | |vbabka(a)suse.com --- Comment #10 from Takashi Iwai <tiwai(a)suse.com> --- If that's the case, let's invite MM people to the tea party. -- You are receiving this mail because: You are the assignee for the bug.

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[Bug 1219284] New: increased ram usage after upgrading from 6.6.x to 6.7.x
by bugzilla_noreply＠suse.com 30 Jan '24

30 Jan '24

https://bugzilla.suse.com/show_bug.cgi?id=1219284 Bug ID: 1219284 Summary: increased ram usage after upgrading from 6.6.x to 6.7.x Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-bugs(a)opensuse.org Reporter: andrea.manzini(a)suse.com QA Contact: qa-bugs(a)suse.de Target Milestone: --- Found By: --- Blocker: --- Created attachment 872257 --> https://bugzilla.suse.com/attachment.cgi?id=872257&action=edit measures with kernel 6.6.7 upgrading just the kernel-default package, the system reports ~450MB more ram used with same settings, same desktop environment and configuration. -- You are receiving this mail because: You are the assignee for the bug.

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[Bug 1219284] increased ram usage after upgrading from 6.6.x to 6.7.x
by bugzilla_noreply＠suse.com 30 Jan '24

30 Jan '24

https://bugzilla.suse.com/show_bug.cgi?id=1219284 https://bugzilla.suse.com/show_bug.cgi?id=1219284#c8 --- Comment #8 from Andrea Manzini <andrea.manzini(a)suse.com> --- from a first glance I can't tell any significant difference, apart from user_namespace which is like doubled for 6.7 ; but some values like inode_cache or dentry are higher in 6.6 than 6.7 . I attached the content of both measurement if you want to take a look. $ grep user_namespace slabinfo_6.* slabinfo_6.6.txt:user_namespace 13 13 624 13 2 : tunables 0 0 0 : slabdata 1 1 0 slabinfo_6.7.txt:user_namespace 25 25 632 25 4 : tunables 0 0 0 : slabdata 1 1 0 -- You are receiving this mail because: You are the assignee for the bug.

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[Bug 1219284] increased ram usage after upgrading from 6.6.x to 6.7.x
by bugzilla_noreply＠suse.com 30 Jan '24

30 Jan '24

https://bugzilla.suse.com/show_bug.cgi?id=1219284 https://bugzilla.suse.com/show_bug.cgi?id=1219284#c7 --- Comment #7 from Andrea Manzini <andrea.manzini(a)suse.com> --- Created attachment 872296 --> https://bugzilla.suse.com/attachment.cgi?id=872296&action=edit /proc/slabinfo content on kernel 6.7 -- You are receiving this mail because: You are the assignee for the bug.

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