# # The number of 2M hugepages to reserve on system boot # # Default is 0 # To e.g. let it reserve 64x 2M Hugepages set: # NR_2M_PAGES=64 # # The number of 1G hugepages to reserve on system boot # # Default is 0 # To e.g. let it reserve 2x 1G Hugepages set: # NR_1G_PAGES=2 # # Dropping slab and pagecache can help to successfully allocate hugepages, # especially later in the lifecycle of a system. # This comes at the cost of loosing all slab and pagecache on (re)start # of the dpdk service - therefore the default is off. # # Default is 0 # Set to 1 to enable it #DROPCACHE_BEFORE_HP_ALLOC=0 # The DPDK library will use the first mounted hugetlbfs. # The init scripts try to ensure there is at least one default hugetlbfs # mountpoint on start. # If you have multiple hugetlbfs mountpoints for a complex (e.g. specific numa # policies) setup it should be controlled by the admin instead of this init # script. In that case specific mountpoints can be provided as parameters to # the DPDK library. # Hardware may support other granularities of hugepages (like 4M). But the # larger the hugepages the earlier those should be allocated. # Note: the dpdk init scripts will report warnings, but not fail if they could # not allocate the requested amount of hugepages. # The more or the larger the hugepages to be allocated are, the more it is # recommended to do the reservation as kernel commandline arguments. # To do so edit /etc/default/grub: GRUB_CMDLINE_LINUX_DEFAULT # and add [hugepagesz=xx] hugepages=yy ... # # Kernel commandline config: # hugepagesz sets the size for the next hugepages reservation (default 2M) # hugepages reserves the given number of hugepages of the size set before # # After modifying /etc/default/grub, the command "update-grub" has to be # run in order to re-generate the grub config files. The new values will # be used after next reboot. # # example: # GRUB_CMDLINE_LINUX_DEFAULT="... hugepages=16 hugepagesz=1G hugepages=2" # # If the system supports it, this will reserve 16x 2M pages and 2x 1G pages. #