Date: Tue, 22 Sep 2020 18:08:01 +0200 From: Peter <pmc@citylink.dinoex.sub.org> To: freebsd-stable@freebsd.org Subject: How to free used Swap-Space? Message-ID: <20200922160801.GA19535@gate.oper.dinoex.org>
next in thread | raw e-mail | index | archive | help
Hi all,
my machine should use about 3-4, maybe 5 GB swapspace. Today I found
it suddenly uses 8 GB (which is worryingly near the configured 10G).
I stopped all the big suckers - nothing found.
I stopped all the jails - no success.
I brought it down to singleuser: it tried to swapoff, but failed.
I unmounted all filesystems, exported all pools, detached all geli,
and removed most of the netgraphs. Swap is still occupied.
Machine is now running only the init and a shell processes, has
almost no filesystems mounted, has mostly native networks only, and
this still occupies 3 GB of swap which cannot be released.
What is going on, what is doing this, and how can I get this swapspace
released??
It is 11.4-RELEASE-p3 amd64.
Script started on Mon Sep 21 05:43:20 2020
root@edge# ps axlww
UID PID PPID CPU PRI NI VSZ RSS MWCHAN STAT TT TIME COMMAND
0 0 0 0 -16 0 0 752 swapin DLs - 291:32.41 [kernel]
0 1 0 0 20 0 5416 248 wait ILs - 0:00.22 /sbin/init --
0 2 0 0 -16 0 0 16 ftcl DL - 0:00.00 [ftcleanup]
0 3 0 0 -16 0 0 16 crypto_w DL - 0:00.00 [crypto]
0 4 0 0 -16 0 0 16 crypto_r DL - 0:00.00 [crypto returns]
0 5 0 0 -16 0 0 32 - DL - 11:41.94 [cam]
0 6 0 0 -8 0 0 80 t->zthr_ DL - 13:07.13 [zfskern]
0 7 0 0 -16 0 0 16 waiting_ DL - 0:00.00 [sctp_iterator]
0 8 0 0 -16 0 0 16 - DL - 2:05.20 [rand_harvestq]
0 9 0 0 -16 0 0 16 - DL - 0:00.04 [soaiod1]
0 10 0 0 155 0 0 64 - RNL - 17115:06.48 [idle]
0 11 0 0 -52 0 0 352 - WL - 49:05.30 [intr]
0 12 0 0 -16 0 0 64 sleep DL - 16:28.51 [ng_queue]
0 13 0 0 -8 0 0 48 - DL - 23:10.60 [geom]
0 14 0 0 -16 0 0 16 seqstate DL - 0:00.00 [sequencer 00]
0 15 0 0 -68 0 0 160 - DL - 0:23.64 [usb]
0 16 0 0 -16 0 0 16 - DL - 0:00.04 [soaiod2]
0 17 0 0 -16 0 0 16 - DL - 0:00.04 [soaiod3]
0 18 0 0 -16 0 0 16 - DL - 0:00.04 [soaiod4]
0 19 0 0 -16 0 0 16 idle DL - 0:00.83 [enc_daemon0]
0 20 0 0 -16 0 0 48 psleep DL - 12:07.72 [pagedaemon]
0 21 0 0 20 0 0 16 psleep DL - 4:12.41 [vmdaemon]
0 22 0 0 155 0 0 16 pgzero DNL - 0:00.00 [pagezero]
0 23 0 0 -16 0 0 64 psleep DL - 0:23.50 [bufdaemon]
0 24 0 0 20 0 0 16 - DL - 0:04.21 [bufspacedaemon]
0 25 0 0 16 0 0 16 syncer DL - 0:32.48 [syncer]
0 26 0 0 -16 0 0 16 vlruwt DL - 0:02.31 [vnlru]
0 27 0 0 -16 0 0 16 - DL - 7:11.58 [racctd]
0 157 0 0 20 0 0 16 geli:w DL - 0:22.03 [g_eli[0] ada1p2]
0 158 0 0 20 0 0 16 geli:w DL - 0:22.77 [g_eli[1] ada1p2]
0 159 0 0 20 0 0 16 geli:w DL - 0:31.08 [g_eli[2] ada1p2]
0 160 0 0 20 0 0 16 geli:w DL - 0:29.41 [g_eli[3] ada1p2]
0 70865 1 0 20 0 7076 3104 wait Ss v0 0:00.21 -sh (sh)
0 71135 70865 0 20 0 6392 2308 select S+ v0 0:00.00 script
0 71136 71135 0 23 0 7076 3068 wait Ss 0 0:00.00 /bin/sh -i
0 71142 71136 0 23 0 6928 2584 - R+ 0 0:00.00 ps axlww
root@edge# df
Filesystem 512-blocks Used Avail Capacity Mounted on
/dev/ada3p3 1936568 860864 920784 48% /
devfs 2 2 0 100% /dev
procfs 8 8 0 100% /proc
/dev/ada3p4 3099192 1184896 1666368 42% /usr
/dev/ada3p5 580344 8112 525808 2% /var
root@edge# pstat -s
Device 512-blocks Used Avail Capacity
/dev/ada1p2.eli 10485760 5839232 4646528 56%
root@edge# top | cat
last pid: 71147; load averages: 0.19, 0.08, 0.09 up 3+03:21:00 05:44:12
5 processes: 1 running, 4 sleeping
Mem: 9732K Active, 10M Inact, 882M Laundry, 1920M Wired, 10M Buf, 1023M Free
ARC: 335K Total, 16K MFU, 304K MRU, 15K Header
320K Compressed, 2944K Uncompressed, 9.20:1 Ratio
Swap: 5120M Total, 2851M Used, 2269M Free, 55% Inuse
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND
70865 root 1 20 0 7076K 3104K wait 2 0:00 0.00% sh
71135 root 1 20 0 6392K 2308K select 1 0:00 0.00% script
71136 root 1 20 0 7076K 3068K wait 2 0:00 0.00% sh
71146 root 1 20 0 7928K 2980K CPU0 0 0:00 0.00% top
71147 root 1 20 0 6300K 2088K piperd 1 0:00 0.00% cat
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20200922160801.GA19535>