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Tue, 11 Nov 2025 07:45:37 -0500 (EST) Date: Tue, 11 Nov 2025 12:45:35 +0000 From: void To: freebsd-current@freebsd.org, freebsd-arm@freebsd.org Subject: Re: kernel: warning: total configured swap (493567 pages) exceeds maximum recommended amount Message-ID: Mail-Followup-To: freebsd-current@freebsd.org, freebsd-arm@freebsd.org References: List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: X-Spamd-Bar: / X-Spamd-Result: default: False [0.40 / 15.00]; SUSPICIOUS_URL_IN_SUSPICIOUS_MESSAGE(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-0.995]; MID_RHS_NOT_FQDN(0.50)[]; URIBL_RED(0.50)[zefox.net:url]; NEURAL_SPAM_SHORT(0.39)[0.392]; RCVD_IN_DNSWL_LOW(-0.10)[202.12.124.144:from]; HAS_ANON_DOMAIN(0.10)[]; BAD_REP_POLICIES(0.10)[]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_ALL(0.00)[]; ARC_NA(0.00)[]; FREEMAIL_FROM(0.00)[f-m.fm]; R_DKIM_ALLOW(0.00)[f-m.fm:s=fm3,messagingengine.com:s=fm3]; MIME_TRACE(0.00)[0:+]; RCPT_COUNT_TWO(0.00)[2]; FROM_HAS_DN(0.00)[]; DKIM_TRACE(0.00)[f-m.fm:+,messagingengine.com:+]; MLMMJ_DEST(0.00)[freebsd-arm@freebsd.org,freebsd-current@freebsd.org]; TO_DN_NONE(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; DMARC_POLICY_ALLOW(0.00)[f-m.fm,none]; R_SPF_ALLOW(0.00)[+ip4:202.12.124.128/27]; ASN(0.00)[asn:151847, ipnet:202.12.124.0/24, country:AU]; RCVD_VIA_SMTP_AUTH(0.00)[]; FREEMAIL_ENVFROM(0.00)[f-m.fm]; MISSING_XM_UA(0.00)[]; DWL_DNSWL_NONE(0.00)[messagingengine.com:dkim] X-Rspamd-Queue-Id: 4d5R8f70DNz3vlb On Mon, Nov 10, 2025 at 05:40:49PM -0800, bob prohaska wrote: >On Mon, Nov 10, 2025 at 11:29:10PM +0000, void wrote: >> fstab entry for swap is: >> /dev/label/growfs_swap none swap sw 0 0 >I've not seen any recognizable benefit in heeding that warning, but YMMV >I've two Pi2's with 3.6G of swap and one with 1.7G of swap. All misbehave >in the same way. > >If using USB you could try something like (as root) >swapoff /dev/da0s2 >gpart resize -i 2 -s 1700M /dev/da0s2 >swapon /dev/da0s2 I'm thinking maybe raising this as a PR because that swap thing - it came as-is, pre-installed. I downloaded the Nov 3rd armv7 snapshot, wrote it to mmcsd and it was there. I have no idea how to resize or otherwise modify /dev/label/growfs_swap or if it's a device or a file. Raising it as a PR because if incorrectly sized by default then that's a fault. I had planned to remove the above swap entry anyway and instead have swap nfs-mounted. it'd be faster than anything local on the rpi2b. >If using microSD I'd be wary of swap; some very mysterious file corruption >emerged on a Pi3 which had swap on the microSD. Not your situation, of course, >just a cautionary tale. It's on the microsd by default for 16:main for armv7 too as per above >FWIW there is a random collection of "notes to self" at >http://www.zefox.net/~fbsd/ >It's poorly organized, out of date and at least partly wrong. Thanks, I'll have a read. --