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I enable ipfw rules on my mail server. After some time server collapsed. In /var/log/messages is nothing information of my damage. But when I connected monitor, I saw some troubles with swap

swap_pager: indefinite wait buffer

Then I entered command dmesg and saw:

total configured swap (1048576 pages) exceeds maximum recommended amount (980224 pages).
 increase kern.maxswzone or reduce amount of swap.

What I must do? Increase kern.maxswzone? Or increase RAM? Or increase swap?

Сan this problem be due ipfw? Before ipfw everything worked. RAM on server - 512 Mb.

Artem Khmil
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  • Please edit your post to include your machine architecture and version of FreeBSD. `uname -a` will give you that. My first suggestion would be to increase the RAM. What is the approximate level of complexity of your firewall rules ... what's the output of `ipfw list | wc -l`? The `swap_pager` error message suggests you may have hardware problems in your disk subsystem ... failing disk, bad sectors in the swap partition, bad cabling? – Jim L. May 14 '19 at 22:58
  • See [Swap "kern.maxswzone" Help](https://forums.freebsd.org/threads/swap-kern-maxswzone-help.43107/) "... They recommended setting it to 0 to let it choose it's own amount automatically. ... Note that this is only if you were using amd64. If you are using i386 then I think it needs setting properly. With i386 I think it has issues using approx 4GB or more swap." – Vladimir Botka May 15 '19 at 06:19
  • Result of uname -a FreeBSD mail.domain.com 10.3-RELEASE FreeBSD 10.3-RELEASE #0 r297264: Fri Mar 25 03:51:29 UTC 2016 root@releng1.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC i386 – Artem Khmil May 15 '19 at 06:51
  • my firewall rules https://ru.stackoverflow.com/q/980247/308859 – Artem Khmil May 15 '19 at 06:52

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