作者: fakeman 時間: 2023-2-12 02:08 標題: 試下隻新嘅 stick style USB SSD
本帖最後由 fakeman 於 2023-2-12 02:09 編輯
係日森見到呢隻 USB SSD(但睇落同普通 USB stick 冇分別)平得來(250GB 唔使 4000 円)兼且極度好評,本住冒險精神試試....

體積非常之細小(望下左手邊係我隻手指),網站有 2 款,一隻寫話係 USB memory 一隻係 SSD,我揀 SSD 果個
官方聲稱 USB 3.2 Gen 2(10Gbps)下可以 600MB/s read + 260MB/s write,如果用 USB 3.2 Gen 1(5Gbps)就會係 400MB/s read + 250MB write
手頭最方便果部 Celeron J4125 mini PC 只有 USB 3.2 Gen 1,就試一試先,因為我行緊 Linux Mint,用 KDiskMark(類似 Crystal Disk Mark)去測試
- KDiskMark (3.1.2): https://github.com/JonMagon/KDiskMark
- Flexible I/O Tester (fio-3.16): https://github.com/axboe/fio
- --------------------------------------------------------------------------------
- * MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
- * KB = 1000 bytes, KiB = 1024 bytes
-
- [Read]
- Sequential 1 MiB (Q= 1, T= 1): 399.001 MB/s [ 389.6 IOPS] < 2562.70 us>
- Random 4 KiB (Q= 1, T= 1): 3.874 MB/s [ 968.6 IOPS] < 1029.74 us>
-
- [Write]
- Sequential 1 MiB (Q= 1, T= 1): 355.088 MB/s [ 346.8 IOPS] < 1230.95 us>
- Random 4 KiB (Q= 1, T= 1): 4.164 MB/s [ 1041.1 IOPS] < 928.61 us>
-
- Profile: Real World Performance
- Test: 1 GiB (x5) [Measure: 5 sec / Interval: 5 sec]
- Date: 2023-02-12 03:01:21
- OS: linuxmint 20.3 [linux 5.15.0-58-generic]
Read 399MB/s(同官方數字幾乎相同)Write 355MB/s(比官方寫嘅快,已經重複咗 2-3 次,數值幾乎不變),睇返森林 d 報告,大多數用家 Crystal Disk Mark 都試到 write speed 比表示嘅高
根據包裝,寫住 Design in Japan,不過 Made in Taiwan(竟然唔係祖國製造??),為咗一探究竟,係 Linux console 查牌先
- Bus 002 Device 004: ID 13fe:6500 Kingston Technology Company Inc. USB DISK 3.2
- Device Descriptor:
- bLength 18
- bDescriptorType 1
- bcdUSB 3.20
- bDeviceClass 0
- bDeviceSubClass 0
- bDeviceProtocol 0
- bMaxPacketSize0 9
- idVendor 0x13fe Kingston Technology Company Inc.
- idProduct 0x6500
- bcdDevice 1.10
- iManufacturer 1
- iProduct 2 USB DISK 3.2
- iSerial 3 070026E985170B27
- bNumConfigurations 1
- Configuration Descriptor:
- bLength 9
- bDescriptorType 2
- wTotalLength 0x0079
- bNumInterfaces 1
- bConfigurationValue 1
- iConfiguration 0
- bmAttributes 0x80
- (Bus Powered)
- MaxPower 896mA
- Interface Descriptor:
- bLength 9
- bDescriptorType 4
- bInterfaceNumber 0
- bAlternateSetting 0
- bNumEndpoints 2
- bInterfaceClass 8 Mass Storage
- bInterfaceSubClass 6 SCSI
- bInterfaceProtocol 80 Bulk-Only
- iInterface 0
- Endpoint Descriptor:
- bLength 7
- bDescriptorType 5
- bEndpointAddress 0x81 EP 1 IN
- bmAttributes 2
- Transfer Type Bulk
- Synch Type None
- Usage Type Data
- wMaxPacketSize 0x0400 1x 1024 bytes
- bInterval 0
- bMaxBurst 7
- Endpoint Descriptor:
- bLength 7
- bDescriptorType 5
- bEndpointAddress 0x02 EP 2 OUT
- bmAttributes 2
- Transfer Type Bulk
- Synch Type None
- Usage Type Data
- wMaxPacketSize 0x0400 1x 1024 bytes
- bInterval 0
- bMaxBurst 7
- Interface Descriptor:
- bLength 9
- bDescriptorType 4
- bInterfaceNumber 0
- bAlternateSetting 1
- bNumEndpoints 4
- bInterfaceClass 8 Mass Storage
- bInterfaceSubClass 6 SCSI
- bInterfaceProtocol 98
- iInterface 0
- Endpoint Descriptor:
- bLength 7
- bDescriptorType 5
- bEndpointAddress 0x81 EP 1 IN
- bmAttributes 2
- Transfer Type Bulk
- Synch Type None
- Usage Type Data
- wMaxPacketSize 0x0400 1x 1024 bytes
- bInterval 0
- bMaxBurst 7
- MaxStreams 32
- Data-in pipe (0x03)
- Endpoint Descriptor:
- bLength 7
- bDescriptorType 5
- bEndpointAddress 0x02 EP 2 OUT
- bmAttributes 2
- Transfer Type Bulk
- Synch Type None
- Usage Type Data
- wMaxPacketSize 0x0400 1x 1024 bytes
- bInterval 0
- bMaxBurst 7
- MaxStreams 32
- Data-out pipe (0x04)
- Endpoint Descriptor:
- bLength 7
- bDescriptorType 5
- bEndpointAddress 0x83 EP 3 IN
- bmAttributes 2
- Transfer Type Bulk
- Synch Type None
- Usage Type Data
- wMaxPacketSize 0x0400 1x 1024 bytes
- bInterval 0
- bMaxBurst 0
- MaxStreams 32
- Status pipe (0x02)
- Endpoint Descriptor:
- bLength 7
- bDescriptorType 5
- bEndpointAddress 0x04 EP 4 OUT
- bmAttributes 2
- Transfer Type Bulk
- Synch Type None
- Usage Type Data
- wMaxPacketSize 0x0400 1x 1024 bytes
- bInterval 0
- bMaxBurst 15
- Command pipe (0x01)
- Binary Object Store Descriptor:
- bLength 5
- bDescriptorType 15
- wTotalLength 0x002a
- bNumDeviceCaps 3
- USB 2.0 Extension Device Capability:
- bLength 7
- bDescriptorType 16
- bDevCapabilityType 2
- bmAttributes 0x00000006
- BESL Link Power Management (LPM) Supported
- SuperSpeed USB Device Capability:
- bLength 10
- bDescriptorType 16
- bDevCapabilityType 3
- bmAttributes 0x00
- wSpeedsSupported 0x000e
- Device can operate at Full Speed (12Mbps)
- Device can operate at High Speed (480Mbps)
- Device can operate at SuperSpeed (5Gbps)
- bFunctionalitySupport 2
- Lowest fully-functional device speed is High Speed (480Mbps)
- bU1DevExitLat 10 micro seconds
- bU2DevExitLat 2047 micro seconds
- SuperSpeedPlus USB Device Capability:
- bLength 20
- bDescriptorType 16
- bDevCapabilityType 10
- bmAttributes 0x00000001
- Sublink Speed Attribute count 1
- Sublink Speed ID count 0
- wFunctionalitySupport 0x1100
- bmSublinkSpeedAttr[0] 0x000a4030
- Speed Attribute ID: 0 10Gb/s Symmetric RX SuperSpeedPlus
- bmSublinkSpeedAttr[1] 0x000a40b0
- Speed Attribute ID: 0 10Gb/s Symmetric TX SuperSpeedPlus
- can't get debug descriptor: Resource temporarily unavailable
- Device Status: 0x000c
- (Bus Powered)
- U1 Enabled
- U2 Enabled
剛才用 dd command 去 fill zero,寫入 35000MB 試下,發現寫入速度去到 465MB/s????
摸上手,全程都感覺唔到咩熱力(有部分 USB 手指用耐咗行得快會好熱然後跌速)
睇下聽日有冇時間借用老婆部新電腦去試下 USB 3.2 Gen 2 時嘅真正速度

