Posts

Showing posts from May, 2011

Benchmark: Samsung S2 Portable 500GB USB 2.0 External HD

Benchmark results for Samsung S2 Portable 500GB USB 2.0 External HD Performance:
Write (K/sec): 34974 ( 52% of the HD Performance of my notebook )
Re-write (K/sec): 17612 ( 59% of the HD Performance of my notebook )
Read (K/sec): 46580 ( 64% of the HD Performance of my notebook )
Seeks/sec: 123.8 ( 164% of the HD Performance of my notebook )

Conclusion:
The theoretical speed limit for USB 2.0 would be 60 MByte/sec. The read speed is about 78% of this value wich is not bad. Even not feeling slow, this HD could be faster.

About tests:
Command line run on both notebooks:
# bonnie++ -n 0 -u 0 -r 8192 -f -b -d /media/Peter-ext3/bonnie/
Bonnie 1.96 @ Fedora 15


# hdparm -I /dev/sdb

/dev/sdb:

ATA device, with non-removable media
Model Number: SAMSUNG HM502JX
Serial Number: C2271F141A0TE5
Firmware Revision: 2AC101C4
Transport: Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6
Standards:
Used: unknown (minor revision …

WiFi/Wireless on Toshiba R830 on Fedora 15

I was not able to use WiFi on Toshiba R830 running Fedora 15. There were missing firmware files for iwl6000g2b adapter. It is very easy to fix it:

# yum install iwl6000g2b-firmware

Then reboot and your Wifi will be running after next boot. :-)

Benchmark: Core 2 Duo T7200 vs. Core i7 2620M

Test systems:
System 1: 2007 noteoobk: Toshiba U205-S5067: Core 2 Duo T7200, 4GB RAM, 320 GB HD
System 2: 2011 notebook: Toshiba R830-10P: Core i7 2620M, 8GB RAM, 256 GB SSD

This benchmark result is not only affected by the processor. Almost all system components affects the result. The processor is only the main component.

Results:
Evaluating overall performance, for compiling Linux Kernel and generate its RPM packages for Fedora 15: Core i7 system is 2.85 times faster than Core 2 Duo system.

Details
I've run the steps described on: http://kdpeter.blogspot.com/2011/05/steps-to-test-kernel-build-on-fedora-15.html, for the kernel package kernel-2.6.38.6-27.fc15.src.rpm.

The only difference to the procedure described above is that I added the command "time" in the building step, to be able to compare necessary time to do same task.
$ time rpmbuild -bb --with baseonly --without debuginfo --target=`uname -m` kernel.spec

Individual results
System 1: Core 2 Duo
real 67m48.453s
use…

Benchmark: SSD vs. SATA

System 1: 2007 noteoobk: Toshiba U205-S5067: Core 2 Duo T7200, 4GB RAM, 320 GB HD

System 2: 2011 notebook: Toshiba R830-10P: core i7 2620M, 8GB RAM, 256 GB SSD

How many times faster is SSD??
Write: 2.50 times faster
Re-write: 2.83 times faster
Read: 3.89 times faster
Seeks/sec: 23.99 times faster

Benchmark results:
System 1: 320GB SATA HD
Write (K/sec): 66608
Re-write (K/sec): 29609
Read (K/sec): 71894
Seeks/sec: 75.4

System 2: 256GB SATA SSD
Write (K/sec): 166827
Re-write (K/sec): 84040
Read (K/sec): 280068
Seeks/sec: 1809


About tests:
Command line run on both notebooks:
# bonnie++ -n 0 -u 0 -r 8192 -f -b -d /bonnie/
Bonnie 1.96 @ Fedora 15

System 1 HD info:
hdparm -i /dev/sda

/dev/sda:

Model=SAMSUNG HM320JI, FwRev=2SS00_01, SerialNo=S16LJF0S221285
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=34902, SectSize=554, ECCbytes=4
BuffType=DualPortCache, BuffSize=8192kB, MaxMultSect=16, MultSect=off
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsect…