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Hermes SMTP Server) with ESMTPA ID 7817bfaaf62c7f3ac612ae56f00a9097; Thu, 21 Dec 2023 03:48:25 +0000 (UTC) From: Mark Millard Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable List-Id: Filesystems List-Archive: https://lists.freebsd.org/archives/freebsd-fs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-fs@freebsd.org Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3774.300.61.1.2\)) Subject: Re: measuring swap partition speed Message-Id: Date: Wed, 20 Dec 2023 19:48:14 -0800 To: void , freebsd-fs@freebsd.org X-Mailer: Apple Mail (2.3774.300.61.1.2) References: X-Spamd-Result: default: False [-3.50 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-1.000]; DMARC_POLICY_ALLOW(-0.50)[yahoo.com,reject]; MV_CASE(0.50)[]; R_DKIM_ALLOW(-0.20)[yahoo.com:s=s2048]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; MIME_GOOD(-0.10)[text/plain]; FROM_HAS_DN(0.00)[]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DWL_DNSWL_NONE(0.00)[yahoo.com:dkim]; MLMMJ_DEST(0.00)[freebsd-fs@freebsd.org]; RCVD_IN_DNSWL_NONE(0.00)[98.137.69.206:from]; MID_RHS_MATCH_FROM(0.00)[]; FREEMAIL_ENVFROM(0.00)[yahoo.com]; RWL_MAILSPIKE_POSSIBLE(0.00)[98.137.69.206:from]; DKIM_TRACE(0.00)[yahoo.com:+]; FREEMAIL_FROM(0.00)[yahoo.com]; TO_DN_SOME(0.00)[]; ASN(0.00)[asn:36647, ipnet:98.137.64.0/20, country:US]; RCPT_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; FREEMAIL_TO(0.00)[f-m.fm,freebsd.org]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_LAST(0.00)[]; RCVD_COUNT_TWO(0.00)[2] X-Rspamd-Queue-Id: 4Swbxm0sGtz4VXb X-Spamd-Bar: --- Just an example for comparison/contrast: 8 GiBYte RPi4B "C0T" SOC USB3 SSD boot media (no other media) # uname -apKU FreeBSD generic 14.0-STABLE FreeBSD 14.0-STABLE #0 = stable/14-n266002-2ef9079ece5a: Sat Dec 16 08:49:23 UTC 2023 = root@releng1.nyi.freebsd.org:/usr/obj/usr/src/arm64.aarch64/sys/GENERIC = arm64 aarch64 1400501 1400501 (So, = FreeBSD-14.0-STABLE-arm64-aarch64-RPI-20231216-2ef9079ece5a-266002.img = based.) # more /boot/efi/config.txt=20 [all] arm_64bit=3D1 dtparam=3Daudio=3Don,i2c_arm=3Don,spi=3Don dtoverlay=3Dmmc dtoverlay=3Ddisable-bt device_tree_address=3D0x4000 kernel=3Du-boot.bin [pi4] hdmi_safe=3D1 armstub=3Darmstub8-gic.bin # My additions: over_voltage=3D6 sdram_freq_min=3D3200 arm_freq_min=3D2000 force_turbo=3D1 # gpart show -p =3D> 63 468862065 da0 MBR (224G) 63 1985 - free - (993K) 2048 102400 da0s1 fat32lba [active] (50M) 104448 468757680 da0s2 freebsd (224G) =3D> 0 468757680 da0s2 BSD (224G) 0 128 - free - (64K) 128 451979136 da0s2a freebsd-ufs (216G) 451979264 16777216 da0s2b freebsd-swap (8.0G) 468756480 1200 - free - (600K) # more /boot/loader.conf # Configure USB OTG; see usb_template(4). hw.usb.template=3D3 umodem_load=3D"YES" # Multiple console (serial+efi gop) enabled. boot_multicons=3D"YES" boot_serial=3D"YES" # Disable the beastie menu and color beastie_disable=3D"YES" loader_color=3D"NO" # swapoff /dev/label/growfs_swap # dd if=3D/dev/urandom of=3D/dev/da0s2b bs=3D8k count=3D250000 conv=3Dsync= status=3Dprogress ^C478830592 bytes (479 MB, 457 MiB) transferred 22.001s, 22 MB/s 60557+0 records in 60556+0 records out 496074752 bytes transferred in 22.790754 secs (21766491 bytes/sec) Adding: vm.pageout_oom_seq=3D120 vm.pfault_oom_attempts=3D-1 to /boot/loader.config gets the same sort of result: # more /boot/loader.conf # Configure USB OTG; see usb_template(4). hw.usb.template=3D3 umodem_load=3D"YES" # Multiple console (serial+efi gop) enabled. boot_multicons=3D"YES" boot_serial=3D"YES" # Disable the beastie menu and color beastie_disable=3D"YES" loader_color=3D"NO" # vm.pageout_oom_seq=3D120 vm.pfault_oom_attempts=3D-1 # swapoff /dev/label/growfs_swap # dd if=3D/dev/urandom of=3D/dev/da0s2b bs=3D8k count=3D250000 conv=3Dsync= status=3Dprogress ^C1085161472 bytes (1085 MB, 1035 MiB) transferred 50.000s, 22 MB/s 134642+0 records in 134641+0 records out 1102979072 bytes transferred in 50.816711 secs (21705046 bytes/sec) =3D=3D=3D Mark Millard marklmi at yahoo.com