Guruserver plus esata bottleneck? [SOLVED]

[Confusticated]

Are you suspecting something in the uboot?

If u-boot is not involved and the speed is still 1.5GB, we can assume it is not a u-boot issue
The Linux kernel is run on a far vaster range of hardware by many more people than u-boot, obscure bugs get picked up quicker.

Do you have an alternative power supply to the one you are currently using to power the SATA HDD ?
(I leave the side off my PC for just this purpose of tapping into the 600W PSU

[rmentjens]

No I have the standard powersuply that came with the enclosure.

BTW Brainfart. The enclosure is an eminent em7049. I am reading the manual right now. It says it is an USB/esata enclosure. It says nothing about esata 2.

Hang on I found the reason for my 1,5Gbps connection............... Ill be darned. The enclosure supports only esata I
I need an esata II enclosure.......

I WILL buy a new one this week but will it increase write speed from 10Mbps to say 40 Mbps?

[rmentjens]

ok well ive got a new esataII 3GBs enclosure.

first test:

Code:

dd if=/dev/zero of=/mnt/esata/test bs=1M count=256
256+0 records in
256+0 records out
268435456 bytes (268 MB) copied, 29.2624 s, 9.2 MB/s

sigh
uboot still says 1.5GBs?

next test, new drive.... to be continued

[NewIT_James]

Before you buy a new drive try a newer kernel.

http://sheeva.with-linux.com/sheeva/3/3.0/

Try one of the Sheeva kernels.

[rmentjens]

At this stage i am very glad that i did write my issue in the "Guruplug for beginners" chapter.  

Is there an easy way to do that. Please keep in mind that my USB is fried and that i am an ubernoob.

And. Is there a way back. since it is not a sheeva. If i ruin the plug.

Oh by the way, I hooked upd the HDD in the 1.5Gbps enclosure to my desktop running knoppix and did the dd command again.

Here are the results:

sudo dd if=/dev/zero of=/media/sde1/test bs=1M count=256
256+0 records in
256+0 records out
268435456 bytes (268 MB) copied, 5.45388 s, 49.2 MB/s

Now that is what i want to achieve 50 MB/s i.s.o 10 (or 4)MB/s

[rmentjens]

Can a guruplug run a sheevaplug kernel? and if not and i find out afterwards, Can i revert to the gurukernel.

Can i update without the use of a functional USB

[NewIT_James]

yes should be fine, don't try a Dreamplug kernel though.

[Confusticated]

Code:

cat /proc/cpuinfo

[rmentjens]

heres mine

Code:

cat /proc/cpuinfo
Processor       : Feroceon 88FR131 rev 1 (v5l)
BogoMIPS        : 1192.75
Features        : swp half thumb fastmult edsp
CPU implementer : 0x56
CPU architecture: 5TE
CPU variant     : 0x2
CPU part        : 0x131
CPU revision    : 1

Hardware        : Marvell GuruPlug Reference Board
Revision        : 0000
Serial          : 0000000000000000

will update this weekend

[NewIT_James]

and for reference...


ESATA SHEEVAPLUG:

Code:

Processor : Feroceon 88FR131 rev 1 (v5l)
BogoMIPS : 1192.75
Features : swp half thumb fastmult edsp
CPU implementer : 0x56
CPU architecture: 5TE
CPU variant : 0x2
CPU part : 0x131
CPU revision : 1

Hardware : Marvell eSATA SheevaPlug Reference Board
Revision : 0000
Serial : 0000000000000000

DREAMPLUG:

Code:

Processor : Feroceon 88FR131 rev 1 (v5l)
BogoMIPS : 1191.11
Features : swp half thumb fastmult edsp
CPU implementer : 0x56
CPU architecture: 5TE
CPU variant : 0x2
CPU part : 0x131
CPU revision : 1

Hardware : Marvell GuruPlug Reference Board
Revision : 0000
Serial : 0000000000000000

[rmentjens]

I am in the process of buying a second hand esata sheeva. Since I am a little afraid of destroying all the settings in my guru I wait untill I have this sheeva up and running. (without the guru there is no music in my house and that is not an option ;-) )

I expect the sheeva this week

[rmentjens]

EUREKA!!

I found the source of the problem. I recently bought a second hand esata sheeva and was experimenting with it. First thing I did was the dd command test. The result was exellent, so i presumed the sheeva was working better than the guru.

Then i got fed up with mounting my hd by hand so i added the next line in /etc/fstab

Code:

/dev/sda1               /mnt/esata              ext4    rw,auto,sync            0 0

after that i witnessed the same slow write performance.......ping!

I then mounted the hdd on my guru by hand mount /dev/sda1 /mnt/esata and here are the results:

before

Code:

dd if=/dev/zero of=/mnt/esata/test bs=1M count=256
256+0 records in
256+0 records out
268435456 bytes (268 MB) copied, 26.8199 s, 10.0 MB/s

after

Code:

dd if=/dev/zero of=/mnt/esata/test bs=1M count=256
256+0 records in
256+0 records out
268435456 bytes (268 MB) copied, 4.74261 s, 56.6 MB/s

ok this is going to be a very good weekend (it is that simpel to make me habby  )

diving into fstab now

[rmentjens]

Ok people

Thank you all very much for your help.

As i mentioned i found the source of the problem. It was in my /etc/fstab file. made the drive work in sync mode. After changing the line to

Code:

/dev/sda1               /mnt/esata              ext4    rw,auto,async            0 0

everything works fine now.

So i guess it is solved now.