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Hermes SMTP Server) with ESMTPA ID 84b87229faa40357f4ac8221cea7e301; Sun, 05 Jun 2022 19:42:25 +0000 (UTC) From: Mark Millard Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@freebsd.org Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.120.0.1.13\)) Subject: What can I learn about data that is staying paged out? (There is a more specific poudriere bulk related context given.) Message-Id: Date: Sun, 5 Jun 2022 12:42:23 -0700 To: FreeBSD Hackers X-Mailer: Apple Mail (2.3654.120.0.1.13) References: X-Rspamd-Queue-Id: 4LGRq10KxJz3NK3 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=yahoo.com header.s=s2048 header.b=dhw0T0Cx; dmarc=pass (policy=reject) header.from=yahoo.com; spf=pass (mx1.freebsd.org: domain of marklmi@yahoo.com designates 98.137.66.146 as permitted sender) smtp.mailfrom=marklmi@yahoo.com X-Spamd-Result: default: False [-3.33 / 15.00]; FREEMAIL_FROM(0.00)[yahoo.com]; MV_CASE(0.50)[]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[yahoo.com:+]; DMARC_POLICY_ALLOW(-0.50)[yahoo.com,reject]; NEURAL_HAM_SHORT(-0.84)[-0.845]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[yahoo.com]; ASN(0.00)[asn:36647, ipnet:98.137.64.0/20, country:US]; MID_RHS_MATCH_FROM(0.00)[]; SUBJECT_HAS_QUESTION(0.00)[]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-0.999]; R_DKIM_ALLOW(-0.20)[yahoo.com:s=s2048]; FROM_HAS_DN(0.00)[]; DWL_DNSWL_NONE(0.00)[yahoo.com:dkim]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-0.98)[-0.983]; MIME_GOOD(-0.10)[text/plain]; RCPT_COUNT_ONE(0.00)[1]; RCVD_IN_DNSWL_NONE(0.00)[98.137.66.146:from]; MLMMJ_DEST(0.00)[freebsd-hackers]; RCVD_COUNT_TWO(0.00)[2] X-ThisMailContainsUnwantedMimeParts: N I have a poudriere bulk -a -c going on a 8 Gibyte aarch64 system. top has been showing an occasionally increasing swap usage but never any sizable decreases. Over 5800 ports have built so far. The context is UFS only. The system is running a non-debug build of main. Part of the context is ( in /etc/sysctl.conf ): vm.swap_enabled=0 vm.swap_idle_enabled=0 Also ( in /usr/local/etc/poudriere.conf ): USE_TMPFS="data" poudriere's TMPFS reports normally total under 128 KiBytes across the 4 builders. For reference, example figures . . . A top variant shows: Swap: 30720Mi Total, 306816Ki Used vmstat -s shows: 78152 swap pager pages paged out Note: (78152*4096)/1024 == 312608Ki So nearly all of the "swap pager pages paged out" pages are still sitting out in the used swap/paging space. Thus, the usage is not held by user processes or is held via very long running processes or is not directly tied to user processes --or some mix. The variant of top reports never having observed more than: 6658Mi MaxObs(Act+Wir+Lndry). ("MaxObs" is short for "Maximum Observed".) Such high usage is for a bounded time, long past at this point. (Until some combination of port builds ends up active that uses such.) So I'm curious: What can I learn about the data that is staying paged out (and is gradually growing)? How can I learn it? Other notes: The poudriere jail being built is: # poudriere jail -jmain-CA7-bulk_a -i Jail name: main-CA7-bulk_a Jail version: 14.0-CURRENT Jail arch: arm.armv7 Jail method: null Jail mount: /usr/obj/DESTDIRs/main-CA7-poud-bulk_a Jail fs: Jail updated: 2022-05-23 02:21:24 Jail pkgbase: disabled (Just in case the armv7 jail usage or the null method or such is important to the issue.) === Mark Millard marklmi at yahoo.com