Crossplatform Vlad

Please take a look on CPU usage precision on the new kernel for x64 and arm64. It is 1 milliseconds. But kernel 6.13 on armv7 still provides 4 milliseconds of precision. How do I tune CPU usage precision on image build?

On my orange pi pc there are no any errors on missing discard support. it says turning on sync discard 🥳 [ 7.831505] BTRFS info (device sda1: state M): turning on sync discard [ 7.831553] BTRFS warning (device sda1: state M): excessive commit interval 600 [ 7.831581] BTRFS info (device sda1: state M): use lzo compression, level 0 Does it mean continuing trimming works despite fstrim doesn't?

1. performance 2. smooth responsiveness. For USB 2.0 SSD reading is 2x (2944 vs 1500) faster than microsd, and writing is 8x faster (3942 vs 500) than microsd. The benchmark above is made on orange pi pc. 3. missing performance degradation on SSD over time if trim is working

Yeah. RTL9201 is a pretty new controller. Ubuntu 22.04 was released early. I'm waiting for Ubuntu 24.04 based armbian. But USB 2.0 sata controllers support TRIM without queueing according to Google. Probably fstrim unconditionally needs queueing and fails. How to check that continuing trimming works despite fstrim doesn't?

Yes. on the latest armbian with ubuntu 22.04 the result is the same. dmesg logs above are grabbed on the latest armbian with ubuntu 22.04 the fresh armbian installation: root@jammy-armv7l ~ $ uname -r 6.1.63-current-sunxi root@jammy-armv7l ~ $ uname -a Linux jammy-armv7l 6.1.63-current-sunxi #1 SMP Mon Nov 20 10:52:19 UTC 2023 armv7l armv7l armv7l GNU/Linux root@jammy-armv7l ~ $ cat /etc/*release # PLEASE DO NOT EDIT THIS FILE BOARD=orangepipc BOARD_NAME="Orange Pi PC" BOARDFAMILY=sun8i BUILD_REPOSITORY_URL=https://github.com/armbian/build BUILD_REPOSITORY_COMMIT=b600ead20 LINUXFAMILY=sunxi ARCH=arm IMAGE_TYPE=nightly BOARD_TYPE=csc INITRD_ARCH=arm KERNEL_IMAGE_TYPE=zImage FORCE_BOOTSCRIPT_UPDATE= FORCE_UBOOT_UPDATE= VENDOR="Armbian_community" VENDORDOCS="https://docs.armbian.com" VENDORURL="https://github.com/armbian/build" VENDORSUPPORT="https://community.armbian.com/" VENDORBUGS="https://github.com/armbian/community/issues" BOOTSCRIPT_FORCE_UPDATE="no" BOOTSCRIPT_DST="boot.cmd" VERSION=24.2.0-trunk.540 REVISION=24.2.0-trunk.540 IMAGE_UUID=5774cefd-8728-4d69-8504-636e97a35e54 # PLEASE DO NOT EDIT THIS FILE BOARD=orangepipc BOARD_NAME="Orange Pi PC" BOARDFAMILY=sun8i BUILD_REPOSITORY_URL=https://github.com/armbian/build BUILD_REPOSITORY_COMMIT=a7aafb8de LINUXFAMILY=sunxi ARCH=arm IMAGE_TYPE=nightly BOARD_TYPE=csc INITRD_ARCH=arm KERNEL_IMAGE_TYPE=zImage FORCE_BOOTSCRIPT_UPDATE= FORCE_UBOOT_UPDATE= VENDOR="Armbian" VENDORDOCS="https://docs.armbian.com" VENDORURL="https://www.armbian.com/" VENDORSUPPORT="https://forum.armbian.com" VENDORBUGS="https://www.armbian.com/bugs" BOOTSCRIPT_FORCE_UPDATE="no" BOOTSCRIPT_DST="boot.cmd" VERSION=24.2.0-trunk.551 REVISION=24.2.0-trunk.551 BRANCH=current DISTRIB_ID=Ubuntu DISTRIB_RELEASE=22.04 DISTRIB_CODENAME=jammy DISTRIB_DESCRIPTION="Ubuntu 22.04.3 LTS" PRETTY_NAME="Armbian 24.2.0-trunk.551 jammy" NAME="Ubuntu" VERSION_ID="22.04" VERSION="22.04.3 LTS (Jammy Jellyfish)" VERSION_CODENAME=jammy ID=ubuntu ID_LIKE=debian HOME_URL="https://www.armbian.com" SUPPORT_URL="https://forum.armbian.com" BUG_REPORT_URL="https://www.armbian.com/bugs" PRIVACY_POLICY_URL="https://www.armbian.com" UBUNTU_CODENAME=jammy ARMBIAN_PRETTY_NAME="Armbian 24.2.0-trunk.551 jammy"

Not exactly. trim and fstrim works well on the same SSD connected to USB 3.* on laptop using the same USB-SATA adapter. I didn't connect SSD to a sata connecor directly. But trim is missing on USB 2.0 only orange pi pc. here it is (Realtek RTL9201). sda1 is root fs as btrfs, sda2 is swap. Previously I created SSD root fs as ext4 and the result was the same (discard is not supported) The full dmesg is also attached. [ 2.645774] usb 4-1: new high-speed USB device number 2 using ehci-platform [ 2.812076] usb 4-1: New USB device found, idVendor=0bda, idProduct=9201, bcdDevice=f2.00 [ 2.812110] usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 2.812123] usb 4-1: Product: RTL9201 [ 2.812133] usb 4-1: Manufacturer: Realtek [ 2.812144] usb 4-1: SerialNumber: 012345678999 [ 2.836676] usb-storage 4-1:1.0: USB Mass Storage device detected [ 2.838158] scsi host0: usb-storage 4-1:1.0 [ 2.845086] usbcore: registered new interface driver uas [ 4.309250] scsi 0:0:0:0: Direct-Access SSD 128G B 1.02 PQ: 0 ANSI: 6 [ 4.310067] sd 0:0:0:0: Attached scsi generic sg0 type 0 [ 4.313065] sd 0:0:0:0: [sda] 250069680 512-byte logical blocks: (128 GB/119 GiB) [ 4.314870] sd 0:0:0:0: [sda] Write Protect is off [ 4.314891] sd 0:0:0:0: [sda] Mode Sense: 37 00 00 08 [ 4.316343] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 4.331219] sda: sda1 sda2 [ 4.331965] sd 0:0:0:0: [sda] Attached SCSI disk [ 4.527111] BTRFS: device fsid df0ead50-f772-46c2-9e27-c76368fe0a04 devid 1 transid 502 /dev/sda1 scanned by systemd-udevd (189) [ 4.755889] BTRFS info (device sda1): using crc32c (crc32c-generic) checksum algorithm [ 4.755972] BTRFS info (device sda1): using free space tree [ 4.791422] BTRFS info (device sda1): start tree-log replay do you have a many years old orange pi pc? or USB 2.0 only board? dmesg on orange pi pc with usb-sata SSD.txt

It is hardware and its support by armbian question. On the latest armbian smartctl reports Trim is supported, but fstrim still not work (the discard operation is not supported) Sure. can't you see Trim is enabled by smartctl and discard mount option is on?

Nice. What about missing trim on SSD over USB 2.0?

My setup is SD boot and rootfs on ssd on USB 2.0 smartctl on laptop reports TIRM is enabled, but it is missing on orange pi PC. using the same SSD in the same USB box. Do I need another ssd, USB box, or armbian upgrade for TRIM support? root@focal-armv7l ~ $ fstrim -v / fstrim: /: the discard operation is not supported root@focal-armv7l ~ $ mount | grep " / " /dev/sda1 on / type ext4 (rw,noatime,nodiratime,discard,errors=remount-ro,commit=600) root@focal-armv7l ~ $ smartctl -i -d sat /dev/sda smartctl 7.1 2019-12-30 r5022 [armv7l-linux-5.9.14-sunxi] (local build) Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Device Model: SSD 128GB Serial Number: GS20231128661058 LU WWN Device Id: 0 000000 000000000 Firmware Version: HT3618C8 User Capacity: 128,035,676,160 bytes [128 GB] Sector Size: 512 bytes logical/physical Rotation Rate: Solid State Device Form Factor: 2.5 inches Device is: Not in smartctl database [for details use: -P showall] ATA Version is: ACS-4 T13/BSR INCITS 529 revision 5 SATA Version is: SATA 3.2, 6.0 Gb/s (current: 1.5 Gb/s) Local Time is: Wed Feb 7 06:02:15 2024 EET SMART support is: Available - device has SMART capability. SMART support is: Enabled # Missing TRIM support lsblk -D also reports zeros for discard root@focal-armv7l ~ $ lsblk -D NAME DISC-ALN DISC-GRAN DISC-MAX DISC-ZERO sda 0 0B 0B 0 ├─sda1 0 0B 0B 0 └─sda2 0 0B 0B 0 mmcblk0 0 4M 3.5G 0 ├─mmcblk0p1 0 4M 3.5G 0 └─mmcblk0p2 0 4M 3.5G 0 zram0 0 4K 2T 0 zram1 0 4K 2T 0 I'm using previous armbian ver. Can an upgrade help to solve the missing trim issue? root@focal-armv7l ~ $ cat /etc/*release # PLEASE DO NOT EDIT THIS FILE BOARD=orangepipc BOARD_NAME="Orange Pi PC" BOARDFAMILY=sun8i BUILD_REPOSITORY_URL=https://github.com/armbian/build BUILD_REPOSITORY_COMMIT=b9814056 DISTRIBUTION_CODENAME=focal DISTRIBUTION_STATUS=supported VERSION=20.11.3 LINUXFAMILY=sunxi BRANCH=current ARCH=arm IMAGE_TYPE=stable BOARD_TYPE=conf INITRD_ARCH=arm KERNEL_IMAGE_TYPE=Image IMAGE_UUID=3d974917-e04a-4ec3-bc8a-cc3d2427eb76 # PLEASE DO NOT EDIT THIS FILE BOARD=orangepipc BOARD_NAME="Orange Pi PC" BOARDFAMILY=sun8i BUILD_REPOSITORY_URL=git@github.com:armbian/build.git BUILD_REPOSITORY_COMMIT=e846ef656-dirty DISTRIBUTION_CODENAME=focal DISTRIBUTION_STATUS=supported VERSION=21.02.3 LINUXFAMILY=sunxi BRANCH=current ARCH=arm IMAGE_TYPE=stable BOARD_TYPE=conf INITRD_ARCH=arm KERNEL_IMAGE_TYPE=Image DISTRIB_ID=Ubuntu DISTRIB_RELEASE=20.04 DISTRIB_CODENAME=focal DISTRIB_DESCRIPTION="Ubuntu 20.04.6 LTS" NAME="Ubuntu" VERSION="20.04.6 LTS (Focal Fossa)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 20.04.6 LTS" VERSION_ID="20.04" HOME_URL="https://www.ubuntu.com/" SUPPORT_URL="https://help.ubuntu.com/" BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/" PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy" VERSION_CODENAME=focal UBUNTU_CODENAME=focal P.S. ix.io is taking a break