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Forum Discussion
4k sector ?
Hi, I am new to readynas.
I just bought an Ultra 4. At same time I bought 4 Seagate Barracuda Green 2TB SATA 6Gb/s, (SATA 3.0), 64MB Cache, 5900RPM, 3.5".
I installed the new discs in the new Ultra. The Ultra is using Readiator 4.2.19
I took a performance test with drag and drop a 3 gb file from and to the Ultra,and got 66 mb/s read and 31mb/s write.
Tried several times with different files at 1gb, 2gb and 3gb, and the write was the same, 29-32 mb/s
I am using Netgear GS716Tv2 as switch between the Ultra and the PC and Jumbo is on both at the Nic at the PC and at the Ultra, the switch is using 9216 at the ports.
I read this forum, and saw that low write til the Readynas could be that the disk sectors was 512bytes instead of 4K.
Under I have the partion.log. Am I using 4K sectors ?
Regards Paal
The partion.log:
***** partition output for sda *****
Disk /dev/sda: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 3AC0628E-FAC3-40CF-BD2F-47CA398F55CB
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sda: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sda1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sda2 0 - 0 0 0 Empty
/dev/sda3 0 - 0 0 0 Empty
/dev/sda4 0 - 0 0 0 Empty
***** partition output for sdb *****
Disk /dev/sdb: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 90CE1EC8-F613-4B37-8987-9A5DF796BF9D
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sdb: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdb1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sdb2 0 - 0 0 0 Empty
/dev/sdb3 0 - 0 0 0 Empty
/dev/sdb4 0 - 0 0 0 Empty
***** partition output for sdc *****
Disk /dev/sdc: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): EBACBCC1-0CAB-4532-A27A-3713C343721D
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sdc: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdc1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sdc2 0 - 0 0 0 Empty
/dev/sdc3 0 - 0 0 0 Empty
/dev/sdc4 0 - 0 0 0 Empty
***** partition output for sdd *****
Disk /dev/sdd: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 5FB8E81B-D308-4440-9A8E-6D8BEC3D94E0
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sdd: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdd1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sdd2 0 - 0 0 0 Empty
/dev/sdd3 0 - 0 0 0 Empty
/dev/sdd4 0 - 0 0 0 Empty
I just bought an Ultra 4. At same time I bought 4 Seagate Barracuda Green 2TB SATA 6Gb/s, (SATA 3.0), 64MB Cache, 5900RPM, 3.5".
I installed the new discs in the new Ultra. The Ultra is using Readiator 4.2.19
I took a performance test with drag and drop a 3 gb file from and to the Ultra,and got 66 mb/s read and 31mb/s write.
Tried several times with different files at 1gb, 2gb and 3gb, and the write was the same, 29-32 mb/s
I am using Netgear GS716Tv2 as switch between the Ultra and the PC and Jumbo is on both at the Nic at the PC and at the Ultra, the switch is using 9216 at the ports.
I read this forum, and saw that low write til the Readynas could be that the disk sectors was 512bytes instead of 4K.
Under I have the partion.log. Am I using 4K sectors ?
Regards Paal
The partion.log:
***** partition output for sda *****
Disk /dev/sda: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 3AC0628E-FAC3-40CF-BD2F-47CA398F55CB
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sda: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sda1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sda2 0 - 0 0 0 Empty
/dev/sda3 0 - 0 0 0 Empty
/dev/sda4 0 - 0 0 0 Empty
***** partition output for sdb *****
Disk /dev/sdb: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 90CE1EC8-F613-4B37-8987-9A5DF796BF9D
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sdb: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdb1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sdb2 0 - 0 0 0 Empty
/dev/sdb3 0 - 0 0 0 Empty
/dev/sdb4 0 - 0 0 0 Empty
***** partition output for sdc *****
Disk /dev/sdc: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): EBACBCC1-0CAB-4532-A27A-3713C343721D
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sdc: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdc1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sdc2 0 - 0 0 0 Empty
/dev/sdc3 0 - 0 0 0 Empty
/dev/sdc4 0 - 0 0 0 Empty
***** partition output for sdd *****
Disk /dev/sdd: 3907029168 sectors, 1.8 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 5FB8E81B-D308-4440-9A8E-6D8BEC3D94E0
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 64-sector boundaries
Total free space is 4092 sectors (2.0 MiB)
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4.0 GiB FD00
2 8388672 9437247 512.0 MiB FD00
3 9437248 3907025072 1.8 TiB FD00
Disk /dev/sdd: 243201 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8257536 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdd1 0+ 242251- 242252- 1953514583+ ee EFI GPT
/dev/sdd2 0 - 0 0 0 Empty
/dev/sdd3 0 - 0 0 0 Empty
/dev/sdd4 0 - 0 0 0 Empty
27 Replies
Replies have been turned off for this discussion
- Hi PapaBear, thanks for your reply.
Yes I agree with the HP ultra slim PC. I will install 2 gb ram in the PC so I get 4 gb which win 7 32 bits can use and do another test.
I will also install another more robust PC to morrow and do a test.
Yes, it is good that the network is not the problem, but I dont understand why I get so much errors on the Ultra port on the switch when I use Jumbo Frames. In my network I also have two gs108t switches which is gigabit and jumbo is on, I have a total of 4 desktop PC with gigabit nic where jumbo is on. I also have a linksys e3000 router with dd-wrt, but I use this only for wlan desktops, plus some other media equipment.
Maybe I have to turn off Jumbo in my home network.
regards - Jumbo Frames turned off at the switches and all other equipment, using 1518 mtu all over. Zero errors on the switch ports now :)
- Hi
here is a drawing of my home network, see 'Fondy Home Multimedia Network' ;)
http://www.readynas.com/forum/viewtopic.php?f=24&t=22802&p=350459#p350459 - I am embarrassed :)
Thought I had enabled the "Disable full data journaling" in Frontview, but no. I have an UPS and can therefore disable full data journaling.
After doing that I now get 51 mb/s write and 79 mb/s read when doing drag & drop.
Iometer says 69 mb/s read and 84 mb/s write
I have also disabled jumbo frames on switches and other equipment, and no errors at the switchports.
Dont think there is much to do now with performance.
Testet this with the same desktop HP Ultra slim PC - There are a lot of settings, it is easy to miss one.
I agree that there is not much reason to playing with NIC settings, etc, now. - Agree StephenB, now I am satisfied :)
I will thank you, mdgm and PapaBear for your feedback and help, thank you very much
regards Paal - Well, you have a good performer. Your network is impressive.
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