LSMEM(1) LSMEM(1) lsmem - lsmem [] lsmem . sysfs. . s390-tools . --output . lsmem . --split ( : lsmem --split=ZONES). none --split . --all . lsmem . lsmem. : RANGE SIZE STATE REMOVABLE BLOCK NODE ZONES CONFIGURED MEMMAP-ON-MEMORY. . . . : . - . . NUMA ( ) . DMA . . chmem(8) . MEMMAP-- memmap-on-memory . ( struct pages memmap). MEMMAP-ON-MEMORY 1 . 0 memmap . . lsmem . lsmem CONFIGURED MEMMAP-ON-MEMORY . / . " Memmap " memmap-on-memory memory_hotplug. memory_hotplug.memmap_on_memory. -a --all . -b --bytes . 1024 . (KiB MiB GiB ...) : K M G .... -J --json JSON. -n --noheadings . -o --output . --help . +. lsmem -o +NODE. --output-all . -P --pairs ="". (\x). -r --raw (raw). (\x). -S --split . STATE REMOVABLE NODE ZONES CONFIGURED MEMMAP-ON-MEMORY none. . . -s --sysroot lsmem. . --summary[=] . never always only. only. --raw --pairs --json. -h --help . -V --version . LSMEM_COLUMNS . --help. LIBSMARTCOLS_DEBUG=all libsmartcols. LIBSMARTCOLS_DEBUG_PADDING=on . lsmem Gerald Schaefer s390-tools Perl. C util-linux Clemens von Mann Heiko Carstens Karel Zak. chmem(8) . lsmem util-linux . util-linux 2.42.1 2026-05-18 LSMEM(1)