On Mon, Mar 18, 2019 at 05:20:35PM +0200, Andriy Gapon wrote: > > First, a note that this was observed on a system that runs a fairly old current > (~ 1 year old) with a fairly long uptime (> 6 months). > I noticed that the system was nearly out of memory, 98% of swap was in use, > there was less than 1 GB of free memory, several GBs of each of active, inactive > and laundry memory, and many GBs of wired (mostly ZFS). > I decided to pro-actively reboot the system, but to speed that up I put the > system to the single-user mode (via shutdown) and then back to multi-user. So, > there was no real hardware reboot and the kernel kept running. However, all > userland processes were terminated. > > To my surprise, even while in the single-user mode the swap utilization didn't > go below 70%. Also, laundry memory remained in multi-GB area, but let's ignore > this for now. > > I think that the swap could be used only for anonymous memory, so I expected it > go to zero after the shutdown to the single user mode. > Does anyone have any ideas? > Maybe that's something that has already been fixed? > If not, any ideas on what to look for? tmpfs, swap-backed (or even memory backed) md, persistent posix shared memory, SysV shared memory.Received on Mon Mar 18 2019 - 14:32:38 UTC
This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:41:20 UTC