search for: transparent_hugepag

On Thu, Nov 05, 2020 at 04:51:42PM -0800, Ralph Campbell wrote: > +extern void prep_transhuge_device_private_page(struct page *page); No need for the extern. > +static inline void prep_transhuge_device_private_page(struct page *page) > +{ > +} Is the code to call this even reachable if THP support is configured out? If not just declaring it unconditionally and letting dead code

...t when this happened, khugepaged would be taking 100% of cpu for tens of seconds on the affected nodes. It appears, although it?s not completely certain yet (since the problem appears rarely enough to that it?s hard to definitively rule out), that disabling THP by putting ?never? in /sys/kernel/mm/transparent_hugepage/enabled and /sys/kernel/mm/transparent_hugepage/defrag fixes the problem. I guess I am also still wondering what exactly khugepaged does, and what kind of problems I should worry about because I disabled it. The documentation I?ve found for it doesn?t really explain what the transparent huge pa...

Hi, I’m struggling with virsh not detecting my hugepage mount. I have the following kernel command line: BOOT_IMAGE=/vmlinuz-4.8.13-gentoo root=/dev/mapper/gensd-gentoo ro quiet splash intel_iommu=on video=efifb:off,vesafb:off,simplefb:off splash=verbose,theme:livedvd-aurora kvm.ignore_msrs=1 transparent_hugepage=never hugepages=3072 softlevel=qemuvm My startup script outputs the following: hugetlbfs /var/lib/hugetlbfs hugetlbfs rw,relatime,pagesize=2097152,uid=77,gid=77,mode=0770 0 0 [2016.12.13 22:22:50 virsh 2808] ERROR Failed to start domain win10 [2016.12.13 22:22:50 virsh 2808] ERROR internal error:...

I've been having intermittent network issues on my Host - they go away when I stop and disable libvirtd and then reboot. They do not go away if I just stop libvirtd and don't reboot. I'm at a loss as to where to start with my troubleshooting, and being a relative n00b to libvirt, I'd love any pointers. Regards, Richard

Hello there, since I installed CentOS6 few months ago (kept up-to-date using yum), I'm facing very poor performances when writing to USB pendrives. The hardware: a Dell Latitude E6500 laptop (Intel Core Duo P8600 @2.40Ghz), 4Go RAM + 4Go swap, several USB2 pendrives of various brands (less than old, all formatted as vfat). When I perform a copy (with cp or midnight commander, copying big

Hello, I have installed the Xen 4.1.1 and a working kernel 2.6.32.43 which supports Xen on a Ubuntu Linux 10.04 LTS. However, I have never successfully booted the Hypervisor and Dom0. The screen is always black after some kernel messages rapidly go by. I think that I may pass the wrong parameters to the kernel or Hypervisor with GRUB2. Can any one share his/her working grub.cfg for GRUB2 with

Hello, I have a CentOS 7 installation on baremetal with 2 CPUs, 10 cores each and HT enabled, 128 GB RAM. The system has transparent hugetables enabled. cat /sys/kernel/mm/transparent_hugepage/enabled [always] madvise never The system reports anonymous hugepages pages usage and a size of hugepage of 2048Kb cat /proc/meminfo |grep -i hugepages|grep AnonHugePages AnonHugePages: 35491840 kB cat /proc/meminfo |grep -i hugepages|grep Hugepagesize Hugepagesize: 2048 kB Anyway, chec...

...c_tolerance_ppm:uint parm: allow_unsafe_assigned_interrupts:Enable device assignment on platforms without interrupt remapping support. (bool) root@eanna i ~ # grep -P "^(?\!#).*GRUB_CMDLINE" /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT="quiet acpi_osi=Linux iommu=pt iommu=1 transparent_hugepage=never" GRUB_CMDLINE_LINUX="" On Wed, Mar 25, 2015 at 9:53 AM, G. Richard Bellamy <rbellamy@pteradigm.com> wrote: > I've been having intermittent network issues on my Host - they go away when > I stop and disable libvirtd and then reboot. They do not go away if I ju...

...G: unmet direct dependencies detected for DEVICE_PRIVATE Depends on [n]: ZONE_DEVICE [=n] Selected by [m]: - DRM_NOUVEAU_SVM [=y] && HAS_IOMEM [=y] && DRM_NOUVEAU [=m] && MMU [=y] && STAGING [=y] - TEST_HMM [=m] && RUNTIME_TESTING_MENU [=y] && TRANSPARENT_HUGEPAGE [=y] `select' rather sucks this way - easy to break dependencies. Quite a number of years ago the Kconfig gurus were saying "avoid", but I don't recall the details.

...ugepage mount. >> >> I have the following kernel command line: >> BOOT_IMAGE=/vmlinuz-4.8.13-gentoo root=/dev/mapper/gensd-gentoo ro quiet >> splash intel_iommu=on video=efifb:off,vesafb:off,simplefb:off >> splash=verbose,theme:livedvd-aurora kvm.ignore_msrs=1 >> transparent_hugepage=never hugepages=3072 softlevel=qemuvm >> >> My startup script outputs the following: >> hugetlbfs /var/lib/hugetlbfs hugetlbfs >> rw,relatime,pagesize=2097152,uid=77,gid=77,mode=0770 0 0 >> [2016.12.13 22:22:50 virsh 2808] ERROR Failed to start domain win10 >> [...

( Posting again. Correct subject line now! ) Hello, I'm trying to use macvtap on Debian Wheezy. Actually, I've installed a recent version of libvirt and qemu from Jessie, using wheezy-backports. $ virsh version Compiled against library: libvirt 1.2.1 Using library: libvirt 1.2.1 Using API: QEMU 1.2.1 Running hypervisor: QEMU 1.7.0 I'm trying to configure a macvtap interface like

I do not mean to be argumentative, but I have to admit a little frustration with Gluster. I know an enormous emount of effort has gone into this product, and I just can't believe that with all the effort behind it and so many people using it, it could be so fragile. So here goes. Perhaps someone here can point to the error of my ways. I really want this to work because it would be ideal

Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patch-set follows the main idea discussed at 2012 LSFMMS session: "Ballooning for transparent huge

Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patch-set follows the main idea discussed at 2012 LSFMMS session: "Ballooning for transparent huge

From: Jason Gunthorpe <jgg at mellanox.com> The API is a bit complicated for the uses we actually have, and disucssions for simplifying have come up a number of times. This small series removes the customizable pfn format and simplifies the return code of hmm_range_fault() All the drivers are adjusted to process in the simplified format. I would appreciated tested-by's for the two