Re: ntfs3 slow than ntfs-3g

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700MB/S is sync speed, 1G/S is direct speed,
may be ntfs3 not support io direct.

2022-04-30 1:05 GMT+08:00, youling 257 <youling257@xxxxxxxxx>:
> 700MB/S is USB Mass Storage device speed, 1GB/S is usb uas speed,
> may be ntfs3 not support uas.
>
> 2022-04-30 1:03 GMT+08:00, youling 257 <youling257@xxxxxxxxx>:
>> [ 3193.462354] usb 4-1: new SuperSpeed Plus Gen 2x2 USB device number
>> 3 using xhci_hcd
>>                                                        [ 3193.501223]
>> scsi host9: uas
>> [ 3194.397127] scsi 9:0:0:0: Direct-Access     ASMT     ASM236X NVME
>>   0    PQ: 0 ANSI: 6
>>                                                       [ 3194.537445]
>> sd 9:0:0:0: Attached scsi generic sg0 type 0
>> [ 3194.537841] sd 9:0:0:0: [sda] 500118192 512-byte logical blocks:
>> (256 GB/238 GiB)
>>                                                          [
>> 3194.537913] sd 9:0:0:0: [sda] Write Protect is off
>> [ 3194.537916] sd 9:0:0:0: [sda] Mode Sense: 43 00 00 00
>>
>>                                                       [ 3194.538036]
>> sd 9:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't
>> support DPO or FUA
>> [ 3194.538565] sd 9:0:0:0: [sda] Optimal transfer size 2097152 bytes
>>
>>                                                       [ 3194.563302]
>> sda: sda1 sda2 sda3
>> [ 3194.564255] sd 9:0:0:0: [sda] Attached SCSI disk
>>
>> in my test, ntfs3 slow than ntfs-3g.
>>
>> ntfs-3g /dev/block/sda3 /1
>>
>> /dev/block/sda3 on /1 type fuseblk
>> (rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096)
>> root@localhost:~# cd /1
>> root@localhost:/1# time dd if=/dev/zero of=testw.dbf bs=1M count=1000
>> oflag=direct status=progress
>> 1018167296字节(1.0 GB,971 MiB)已复制,1 s,1.0 GB/s
>> 记录了1000+0 的读入
>> 记录了1000+0 的写出
>> 1048576000字节(1.0 GB,1000 MiB)已复制,1.03421 s,1.0 GB/s
>>
>>
>>
>> mount -t ntfs3 /dev/block/sda3 /1
>>
>> /dev/block/sda3 on /1 type ntfs3 (rw,relatime,uid=0,gid=0,iocharset=utf8)
>> root@localhost:/# cd /1
>> root@localhost:/1# time dd if=/dev/zero of=testw.dbf bs=1M count=1000
>> oflag=direct status=progress
>> 707788800字节(708 MB,675 MiB)已复制,1 s,707 MB/s
>> 记录了1000+0 的读入
>> 记录了1000+0 的写出
>> 1048576000字节(1.0 GB,1000 MiB)已复制,1.50322 s,698 MB/s
>>
>





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