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Eventually, No Security Measures Will Help Your System

“When in doubt, use brute force.” – with scalable distributed power the rate per second is mostly limited by cost , or the size of your botnet. Sure a login rate limiter or IP whitelist will help but in some cases that’s impractical. If you are lucky enough that the attacker has an IDS-usable signature that covers you some of the time (Like the current WordPress one). But eventually the password you chose is going the lynchpin of your security system. How complex is yours?

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OCZ Vertex 4 SSD on Fedora Linux Benchmark

I needed more space for something so I grabbed a 256GB Vertex 4 to replace a 128GB. Looks promising so far , write speed is much faster , almost 100MB/s over the 128GB . See OCZ Vertex 4 128GB

Version 1.96 ——Sequential Output—— –Sequential Input- –Random-
Concurrency 1 -Per Chr- –Block– -Rewrite- -Per Chr- –Block– –Seeks–
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
lwhDT 48136M 1035 99 496483 39 220350 29 4921 99 537790 36 2880 130
Latency 11188us 70174us 347ms 4566us 8008us 6706us
Version 1.96 ——Sequential Create—— ——–Random Create——–
lwhDT -Create– –Read— -Delete– -Create– –Read— -Delete–
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 21359 40 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++
Latency 95us 862us 337us 82us 19us 95us
1.96,1.96,lwhDT.zer0.net,1,1351296559,48136M,,1035,99,496483,39,220350,29,4921,99,537790,36,2880,130,16,,,,,21359,40,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,11188us,70174us,347ms,4566us,8008us,6706us,95us,862us,337us,82us,19us,95us

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OCZ Vertex 4 SSD Benchmark on Linux

Just got one of these OCZ Vertext 4 SSDs to replace an Agility model which was pretty amazing. The write speed is advertised as slower but more consistent with different kinds of data. bonnie++ run:

Note you should update the firmware on this drive before using it, they doubled the write speed on some models recently. I installed version 1.4RC before formatting the drive. You can get it here: http://www.ocztechnology.com/ssd_tools/OCZ_Vertex_4/ The only bad part is they don’t have an updater for Linux or iOS, I had to use a friends windows box to run it.

Version  1.96       ——Sequential Output—— –Sequential Input- –Random-
Concurrency   1     -Per Chr- –Block– -Rewrite- -Per Chr- –Block– –Seeks–
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
lwhLT        32008M  1197  99 409495  35 192164  24  5096  99 525269  33 +++++ +++
Latency             11844us     168ms     682ms    5126us    4138us    4739us
Version  1.96       ——Sequential Create—— ——–Random Create——–
lwhLT               -Create– –Read— -Delete– -Create– –Read— -Delete–
files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
16 30326  50 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++
Latency               109us     439us     382us      75us      20us     115us

If you have never used an SSD I would look for a cheap SF-2281 or Indilinx 60-64GB they can be found for $50-70 now. Assuming you aren’t lacking in RAM or have a five year old CPU, its the single biggest noticable upgrade you can make to a computer. A browser loading in a split second becomes the new normal. Copying an 8GB virtual machine image? Don’t go get a coffee, its done in 20 seconds.

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