i don’t have a russian keyboard, because of that i’ll write in english. sorry, if you understand english the same way, as you understand AIX. The large pages in AIX are always in memory. If you reserved the whole your memory for the large pages, you’ve lost your memory. It doesn’t depend, whether you use them or not, they simply can’t be paged out. Change your lgpg_regions to a lower value and you’ll find a lot of free memory.