search for: nr_hugepages

Hi, My dom 0 is jeremy kernel 2.6.32.27 with 3.5 GB allocated memory. I tried allocating 700 huge pages in domain 0 using- ]echo 700 > /proc/sys/vm/nr_hugepages To verify - ]cat /proc/meminfo |grep Huge HugePages_Total: 700 HugePages_Free: 0 HugePages_Rsvd: 18446744073709551019 HugePages_Surp: 0 Hugepagesize: 2048 kB This memory information is not as per expectation. Can anyone explain whether it has really allocated huge pages...

...ation we added a parameter hugepage_num which is specified in the config file of the DomU. It is the number of hugepages that the guest is guaranteed to receive whenever the kernel asks for hugepage by using its boot time parameter or reserving after booting (eg. Using echo XX > /proc/sys/vm/nr_hugepages). During creation of the domain we reserve MFN''s for these hugepages and store them in the list. The listhead of this list is inside the domain structure with name "hugepage_list". When the domain is booting, at that time the memory seen by the kernel is allocated memory  les...

On 2014/9/25 2:05, Eric Blake wrote: > On 09/24/2014 02:05 AM, Linhaifeng wrote: >> Hi, >> >> I want to use virsh to create a VM with the qemu parameter '-object memory-backend-file,id=mem,size=2048M,mem-path=/mnt/huge,share=on -numa node,memdev=mem'. > > Looking at tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages.args, I > see several instances of

...28T05:28:32.373895Z qemu-kvm: -object memory-backend-file,prealloc=yes,mem-path=/dev/hugepages/libvirt/qemu,size=1048576M,id=ram-node1: unable to map backing store for hugepages: Cannot allocate memory get total number of the hugepages you could use: # cat /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages From your xml: <cell id='0' cpus='0' memory='1073741824' memAccess='shared'/> <cell id='1' cpus='1' memory='1073741824' memAccess='shared'/> I guess your machine doesn't have so much hugepage memory: su...

...K - Permissions are set for DPDK Regarding the OVS+DPDK startup steps, the following configuration is in place: B. OVS+DPDK startup and configuration 1. Set and verify the memory hugepages mount -t hugetlbfs nodev /mnt/huge echo 64 > /sys/devices/system/node/node0/hugepages/hugepages- 1048576kB/nr_hugepages 2. Setting the driver permissions modprobe vfio-pci /usr/bin/chmod a+x /dev/vfio /usr/bin/chmod 0666 /dev/vfio/* 3. Configure the PATHS to DPDK and OVS database cd dpdk-stable-16.11.1/ export DPDK_DIR=$PWD export PATH=$PATH:/usr/local/share/openvswitch/scripts export DB_SOCK=/usr/local/var/run/open...

...t.send_redirects = 0 net.ipv4.icmp_ignore_bogus_error_responses = 1 net.ipv4.conf.all.log_martians = 0 net.ipv4.conf.default.log_martians = 0 net.ipv4.conf.default.accept_source_route = 0 net.ipv4.conf.all.accept_redirects = 0 net.ipv4.conf.default.accept_redirects = 0 vm.vfs_cache_pressure = 35 vm.nr_hugepages = 512 net.ipv4.tcp_max_syn_backlog = 2048 fs.aio-max-nr = 1048576 vm.dirty_background_ratio = 3 vm.dirty_ratio = 40 After making changes, do you have any recommendations on which tools to use to monitor those changes and see how they perform? I have noatime set in fstab in the guest for the /var...

Afternoon all. I''ve been reading around on Puppet and Oracle, and have come up with a few links that suggest how to get Oracle installed and base configured, which has got me started in the right direction on that. My next challenge is maintaining Oracle database specific configuration on the relevant hosts. This contains various elements, such as /etc/oratab, /etc/oranfstab (as

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

...rty_writeback_centisecs = 500 vm.drop_caches = 0 vm.highmem_is_dirtyable = 0 vm.hugepages_treat_as_movable = 0 vm.hugetlb_shm_group = 0 vm.laptop_mode = 0 vm.legacy_va_layout = 0 vm.lowmem_reserve_ratio = 256 32 32 vm.max_map_count = 65530 vm.min_free_kbytes = 3084 vm.mmap_min_addr = 4096 vm.nr_hugepages = 0 vm.nr_overcommit_hugepages = 0 vm.nr_pdflush_threads = 0 vm.overcommit_memory = 0 vm.overcommit_ratio = 50 vm.page-cluster = 3 vm.percpu_pagelist_fraction = 0 vm.scan_unevictable_pages = 0 vm.stat_interval = 1 vm.swappiness = 30 vm.user_reserve_kbytes = 131072 vm.vdso_enabled = 1 vm.vfs_cache_p...