[ceph-users] memory consumption by osd

Hi, Here is a snippet from top on a node with 10 OSDs. =========================== MiB Mem : 257280.1 total, 2070.1 free, 31881.7 used, 223328.3 buff/cache MiB Swap: 128000.0 total, 126754.7 free, 1245.3 used. 221608.0 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 30492 167 20 0 4483384 2.9g 16696 S 6.0 1.2 707:05.25 ceph-osd 35396 167 20 0 4444952 2.8g 16468 S 5.0 1.1 815:58.52 ceph-osd 33488 167 20 0 4161872 2.8g 16580 S 4.7 1.1 496:07.94 ceph-osd 36371 167 20 0 4387792 3.0g 16748 S 4.3 1.2 762:37.64 ceph-osd 39185 167 20 0 5108244 3.1g 16576 S 4.0 1.2 998:06.73 ceph-osd 38729 167 20 0 4748292 2.8g 16580 S 3.3 1.1 895:03.67 ceph-osd 34439 167 20 0 4492312 2.8g 16796 S 2.0 1.1 921:55.50 ceph-osd 31473 167 20 0 4314500 2.9g 16684 S 1.3 1.2 680:48.09 ceph-osd 32495 167 20 0 4294196 2.8g 16552 S 1.0 1.1 545:14.53 ceph-osd 37230 167 20 0 4586020 2.7g 16620 S 1.0 1.1 844:12.23 ceph-osd =========================== Does it look OK with 2GB free? I can't tell how that 220GB is used for buffer/cache. Is that used by OSDs? Is it controlled by configuration or auto scaling based on physical memory? Any clarifications would be helpful. Thanks! Tony