Mac Pro Late 2008 1GB LAN Problem Yosemite

In work i have 20 Mac Pro Late 2008 and 5 Mac Pro Early 2013 all connected to server with 1GB LAN speed so all work on 1GB speed
All Mac Pro users connect to server folder for work

I found one **** of annoying problem

i did speed test using "LAN Speed Test" for writing and reading purpose on same folder they use in the server since users with Mac yosemite complains of slowness while they work

In the machines running OS X 10.8.5 i run LAN Speed Test and it gives writing 1GB and reading 1GB

In the machines running OS X 10.10.2 i run LAN Speed Test and it gives writing 100MB and reading 1GB

I was confused so i test on all machines with mac yosemite and they show all the same results

so i took my MacBook Pro Mid 2009 running OS X 10.10.2 and plugin the LAN cable from machines running OS X 10.8.5 (since they show 1GB for R/W) and run the test again ..... i was shocked that it gives me the same results 100MB writing and 1GB reading

Formatted my MacBook Pro to OS X 10.9.5 and it gave me same problem, then formatted to 10.8.5 and it gave me 1GB R/W
Now im 1000% sure its OS X 10.10 & 10.9 problem

Is there any solution regards this problem since i googled without results?

Posted on Mar 5, 2015 8:51 AM

17 replies

hamood_d10 Author

Level 1

5 points

Apr 5, 2015 4:47 AM in response to hamood_d10

too bad that till now no one find a solution

Apr 5, 2015 8:30 AM in response to hamood_d10

What drive are you using for the test files?

Only the internal SSD (on a Mac Pro 2013) may be capable of reading and writing at near Gigabit speeds. Any rotating drive will be limited by its spin rate and data density. "Good" rotating drives will be in the neighborhood of 125 Megabytes/sec in a burst, but that rate is not sustainable. Very small writes can be faster (because you are only writing the drive buffer) but larger writes will be much slower.

Initially, there may be as much as 50 milliseconds of dead time while the drive seeks the initial data. As soon as you get beyond the size of one disk track, there will be about 10 milliseconds of dead time while the drive head is repositioned.

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Mac Pro Late 2008 1GB LAN Problem Yosemite