Date: Wed, 20 Dec 2023 19:48:14 -0800 From: Mark Millard <marklmi@yahoo.com> To: void <void@f-m.fm>, freebsd-fs@freebsd.org Subject: Re: measuring swap partition speed Message-ID: <D9C150E2-8453-463B-9A23-B0474D0AE390@yahoo.com> References: <D9C150E2-8453-463B-9A23-B0474D0AE390.ref@yahoo.com>
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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
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