[OpenIndiana-discuss] USB 2 performance

[Jean-Pierre André]

Aurélien Larcher wrote:
> Hi,
> There is indeed a much newer version of ntfs-3g on Jean-Pierre André's website: 2015.3.14AR.1.
> He posted very good results earlier this year.
> Having these in oi-userland is on the TODO list and would be great.

The ntfs-3g library is already part of Hipster, only
the fuse interface and fuse itself are missing.

The current bottleneck is the interface between the
vfs and the fuse kernel module for concatenating write
chunks into memory pages.

> Thanks for your report.
> Best,
>
> Aurélien
>
> À mar. juil. 28 04:08:00 2015 GMT+0200, bentahyr at chez.com a écrit :
>> I did some test today with another USB drive.
>> Here are the results :
>>
>>  From Linux (NTFS)
>> $ dd if=FreeDOS-1.1-memstick-2-2048M.img of=/media/ben/MD/FreeDOS-1.1-memstick-2-2048M.img
>> 3948544+0 enregistrements lus
>> 3948544+0 enregistrements écrits
>> 2021654528 octets (2.0 GB) copiés, 91.5862 s, 22.1 MB/s
>>
>>  From OI
>> Jul 28 08:50:42 hostname usba: [ID 912658 kern.info] USB 2.0 device (usb5e3,702) operating at hi speed (USB 2.x) on USB 2.0 root hub: storage at 7, scsa2usb0 at bus address 2
>> Jul 28 08:50:42 hostname usba: [ID 349649 kern.info]      USB TO IDE
>> Jul 28 08:50:42 hostname genunix: [ID 936769 kern.info] scsa2usb0 is /pci at 0,0/pci1028,21e at 1d,7/storage at 7
>> Jul 28 08:50:42 hostname genunix: [ID 408114 kern.info] /pci at 0,0/pci1028,21e at 1d,7/storage at 7 (scsa2usb0) online
>>
>> using NTFS-3g
>> $ dd if=FreeDOS-1.1-memstick-2-2048M.img of=/mnt/FreeDOS-1.1-memstick-2-2048M.img
>> 3948544+0 records in
>> 3948544+0 records out
>> 2021654528 bytes (2.0 GB) copied, 15867.8 s, 127 kB/s
>>
>> After reformating to UFS
>> $ dd if=FreeDOS-1.1-memstick-2-2048M.img of=/mnt/ben/FreeDOS-1.1-memstick-2-2048M.img
>> 3948544+0 records in
>> 3948544+0 records out
>> 2021654528 bytes (2.0 GB) copied, 110.893 s, 18.2 MB/s
>>
>>
>> Yeah, really, something is wrong with the implementation of FAT/NTFS on OpenIndiana.
>> Would a more recent NTFS-3G help ? Currently using 2012.1.15AR.8 from SFE.

Which version of ntfs-3g were you using and what are
your mount options ? What is the output of "ntfs-3g -help" ?

>>
>> Ben