hello,
I have a USB pen drive, formatted with FAT32.
It is working with correct speed under linux, windows, freebsd.
I mean I can copy to and from files.
In the contrary, it is VERY slow on opensolaris.
I mean a transfer of 10 files total 1GB takes around 3 mn on windows and
1 1/2 hour in solaris.
hello,
I have a USB pen drive, formatted with FAT32.
It is working with correct speed under linux, windows, freebsd.
I mean I can copy to and from files.
In the contrary, it is VERY slow on opensolaris.
I mean a transfer of 10 files total 1GB takes around 3 mn on windows and
1 1/2 hour in solaris.
> In the contrary, it is VERY slow on opensolaris.
1. Check if it's in USB 2.0 mode, see question 13:
http://www.sun.com/io_technologies/usb/USB-Faq.html#General
2. How much RAM does your system have?
3. Try enabling reduced command set, see question 19:
http://www.sun.com/io_technologies/usb
Artem Kachitchkine wrote:
>
>> In the contrary, it is VERY slow on opensolaris.
>
> 1. Check if it's in USB 2.0 mode, see question 13:
>
> http://www.sun.com/io_technologies/usb/USB-Faq.html#General
>
> 2. How much RAM does your system have?
>
> 3. Try enabling reduced command set, see question 19:
the pcfs driver (fat32 implementation in solaris) is severly limited in its
speed, it gives a maximum speed of ~3mb/s, so don't expect to have higher
speeds...
This message posted from opensolaris.org
___
opensolaris-discuss mailing list
opensolaris
Bruno Damour <[EMAIL PROTECTED]> wrote:
> hello,
> I have a USB pen drive, formatted with FAT32.
> It is working with correct speed under linux, windows, freebsd.
> I mean I can copy to and from files.
> In the contrary, it is VERY slow on opensolaris.
> I mean a transfer of 10 files total 1GB tak
> the pcfs driver (fat32 implementation in solaris) is
> severly limited in its speed, it gives a maximum
> speed of ~3mb/s, so don't expect to have higher
> speeds...
True, but...
1 Gbyte in 90 minutes is less than 200 kbytes / second.
Bruno: is both reading from and writing to the USB drive s
Joerg Schilling 写道:
> Bruno Damour <[EMAIL PROTECTED]> wrote:
>
>
>> hello,
>> I have a USB pen drive, formatted with FAT32.
>> It is working with correct speed under linux, windows, freebsd.
>> I mean I can copy to and from files.
>> In the contrary, it is VERY slow on opensolaris.
>> I mean a
ChaoHong Guo <[EMAIL PROTECTED]> wrote:
> >> I mean a transfer of 10 files total 1GB takes around 3 mn on windows and
> >> 1 1/2 hour in solaris.
> >> Is there any explanation / workaround ?
> >>
> >
> > You most likely run USB-1.1 only.
> >
> > You need to check why...
> >
> > Jörg
> >
>
On Mon, 7 Apr 2008, ChaoHong Guo wrote:
Joerg Schilling 写道:
Bruno Damour <[EMAIL PROTECTED]> wrote:
hello,
I have a USB pen drive, formatted with FAT32.
It is working with correct speed under linux, windows, freebsd.
I mean I can copy to and from files.
In the contrary, it is VERY slow on op
On Mon, 7 Apr 2008, Jürgen Keil wrote:
the pcfs driver (fat32 implementation in solaris) is
severly limited in its speed, it gives a maximum
speed of ~3mb/s, so don't expect to have higher
speeds...
True, but...
1 Gbyte in 90 minutes is less than 200 kbytes / second.
Very fragmented file ?
> But Juergen is correct of course, try to see first what your interface
> gives you when reading / writing "raw". That's the benchmark, you can't
> expect pcfs to beat these numbers - and if they're too low, the first
> thing to address is why the device doesn't do USB 2 (though it should ?).
Jürgen Keil wrote:
>> But Juergen is correct of course, try to see first what your interface
>> gives you when reading / writing "raw". That's the benchmark, you can't
>> expect pcfs to beat these numbers - and if they're too low, the first
>> thing to address is why the device doesn't do USB 2
First approach on my laptop, quite significant.
Comparison of r/w from/to :
- the utility partition on the hd (fat32)
- the usb key
shows that read from the usb key is about 2 times slower than from the hard
disk, which is expected, whereas the write is about 20 times slower, which seems
in deed
> First approach on my laptop, quite significant.
> Comparison of r/w from/to :
> - the utility partition on the hd (fat32)
> - the usb key
> shows that read from the usb key is about 2 times slower than from the hard
> disk, which is expected, whereas the write is about 20 times slower, which
>
Jürgen Keil <[EMAIL PROTECTED]> wrote:
> > copy to usb 2.0 key fat32
> > # time cp Desktop/R174292/Dell_multi-device_A17_R174292.exe /media/z-PEN/
> > real1m58.760s
> > user0m0.009s
> > sys 0m0.358s
>
> Hmm, so it transferred less than 500 kbytes/second,
> for that 56mbyte file cop
Well, I can't say it looks the same :
# ptime dd if=/root/test.rar of=/dev/rdsk/c3t0d0p0 bs=8k count=6400
6400+0 records in
6400+0 records out
real 1:38.689
user0.007
sys 0.242
# ptime dd if=/root/test.rar of=/dev/rdsk/c3t0d0p0 bs=4k count=12800
12800+0 records in
12800+0 reco
> Well, I can't say it looks the same :
>
> # ptime dd if=/root/test.rar of=/dev/rdsk/c3t0d0p0 bs=8k count=6400
> 6400+0 records in
> 6400+0 records out
>
> real 1:38.689
> user0.007
> sys 0.242
> # ptime dd if=/root/test.rar of=/dev/rdsk/c3t0d0p0 bs=4k count=12800
> 12800+0 r
18 matches
Mail list logo
