https://bugzilla.suse.com/show_bug.cgi?id=1190539
https://bugzilla.suse.com/show_bug.cgi?id=1190539#c5
--- Comment #5 from Michael Krapp
sudo dd if=/dev/sda of=/dev/null status=progress 2423468032 bytes (2.4 GB, 2.3 GiB) copied, 7 s, 346 MB/s
WithOUT quirks: kernel: usb 4-2: new SuperSpeed USB device number 6 using xhci_hcd kernel: usb 4-2: New USB device found, idVendor=174c, idProduct=55aa, bcdDevice= 1.00 kernel: usb 4-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1 kernel: usb 4-2: Product: ASM105x kernel: usb 4-2: Manufacturer: ASMT kernel: usb 4-2: SerialNumber: ACDFD0000000000007B4 kernel: usbcore: registered new interface driver usb-storage kernel: scsi host0: uas kernel: usbcore: registered new interface driver uas kernel: scsi 0:0:0:0: Direct-Access ASMT 2115 0 PQ: 0 ANSI: 6 kernel: scsi 0:0:0:0: Attached scsi generic sg0 type 0 kernel: sd 0:0:0:0: [sda] 937721856 512-byte logical blocks: (480 GB/447 GiB) kernel: sd 0:0:0:0: [sda] Write Protect is off kernel: sd 0:0:0:0: [sda] Mode Sense: 43 00 00 00 kernel: sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA kernel: sd 0:0:0:0: [sda] Optimal transfer size 33553920 bytes kernel: sda: sda1 kernel: sd 0:0:0:0: [sda] Attached SCSI disk
sudo dd if=/dev/sda of=/dev/null status=progress 1674818048 bytes (1.7 GB, 1.6 GiB) copied, 7 s, 238 MB/s
So, with quirks set (disable uas for this device) I get 346 MB/s reading from device, without quirk, throughput is only 238 MB/s I will definitely look for another ssd case :) -- You are receiving this mail because: You are the assignee for the bug.