FileVault 2 and disk speed tests

A curious thing. I have had FileVault 2 enabled on my MacBook Air (late 2010) and have been running regular disk speed tests using Blackmagic.
This week I bought a new 2GHz Air with 256GB disk and ran Blackmagic, which showed impressive 453/404 MB/s speeds. All well and good. Then I switched on FileVault 2 and decided to repeat the test to see if there was any speed degredation as a result of the encryption. Now I get an error message that the Air's disk is "read only" and Blacmagic cannot run. If I had had problems on the old Air I would have assumed FV2 was the culprit. Anyone have an idea what is behind this?

Hi, thanks. BlackMagic is in the Apple App Store. Strange thing is, I could test the speed of the SSD on the 2010 Air while FileVault 2 was switched on. I presumed, therefore, that it was compatible with FV.

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Hello, i just installed a vertex 2e 90gb ssd in my macbook pro 13" (8.1 early 2011). But when i do a disk speed test i only get 125 mb/s write speed and 146 mb/s read speed.

Hello, i just installed a vertex 2e 90gb ssd in my macbook pro 13" (8.1 early 2011). But when i do a disk speed test i only get 125 mb/s write speed and 146 mb/s read speed. Thats under 50% of what i should get. The disk have firmware 1.35 and 3 gb/s linkspeed when i check in systemreport.
Anyone know why i get so low speed from my ssd?

Speak to the manufacturer. They did the bench tests.

Yosemite and Blackmagic Speed Test

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FileVault was the problem... after yosemite install file vault take around 1 hour to complete process. Now is again ok.

High latency and poor speed tests lately

For the past 4-5 days, I've been working with various Verizon techs to resolve a high latency/slow Internet problem. Their ultimate solution was that they have no idea why it's doing this, and since I can reach a few websites at full speed and their line tests show I'm operating at full provisioning, it's not their problem. "We can't control traffic outside of our networks." Well, my results are also showing problems with the Verizon servers, so I would think they should be more concerned. Most websites, however, exhibit the problem. So I'm stuck, looking for a better answer than "go away." Maybe some of you are experiencing a similar problem with latency or sporadic speeds?
My provisioning is 20M/5M. I'm in the L.A. area. (In the traceroutes below, I masked Hop 2 for privacy.)
I've experienced this problem with 2 computers (1 desktop, 1 laptop), both using Ethernet ports; one test using wireless on the laptop. I've plugged the router directly into the ONT coax to eliminate my house wiring as the culprit. Westell 9100EM router.
A few websites seem okay, and speedtest.net results always show provisioning at full speed to the L.A. server, but the problem persists when using the non-L.A. server. With speakeasy.net, even the L.A. server exhibits the problem. The latency gets worse as the night goes on, sometimes over 1000ms for some traceroute hops. In the morning, it seems to be back to normal.
Thanks for any help....
Jeff
Some examples...
In the past 2 mornings, I've had good results:
Speed Test (speakeasy.net, Los Angeles): ~ 19798K/4581K
Speed Test (speedtest.net, Los Angeles): always shows full provisioning ~19.74M, 4.56M, 19ms ping
Speed Test (speedtest.net, Dallas): ~ 19.81M/4.37M, 49ms ping
Tracing route to www.l.google.com [74.125.19.104]
over a maximum of 30 hops:
1    <1 ms    <1 ms    <1 ms myrouter.home [192.168.1.1]
2     8 ms     7 ms     7 ms xxxx.xxxxx-xxxxx-xxxxx.verizon-gni.net [173.55.xxx.xxx]
3     8 ms    10 ms     9 ms G4-0-6-1142.LSANCA-LCR-11.verizon-gni.net [130.81.140.122]
4    11 ms    53 ms    11 ms so-4-3-0-0.LAX01-BB-RTR1.verizon-gni.net [130.81.29.244]
5    13 ms    12 ms    12 ms 0.so-1-2-0.XL3.LAX15.ALTER.NET [152.63.10.133]
6    12 ms    11 ms    13 ms 0.ge-7-0-0.BR2.LAX15.ALTER.NET [152.63.116.157]
7     9 ms    12 ms    42 ms xe-11-0-0.edge1.SanJose3.level3.net [4.68.111.249]
8    14 ms    12 ms    17 ms ae-63-60.ebr3.LosAngeles1.Level3.net [4.69.144.52]
9    21 ms    34 ms    35 ms ae-2.ebr3.SanJose1.Level3.net [4.69.132.9]
10    26 ms    19 ms    19 ms ae-83-83.csw3.SanJose1.Level3.net [4.69.134.234]
11    21 ms    22 ms    22 ms ae-3-89.edge1.SanJose1.Level3.net [4.68.18.142]
12    23 ms    22 ms    23 ms GOOGLE-INC.edge1.SanJose1.Level3.net [4.79.43.146]
13    29 ms    34 ms    22 ms 209.85.251.98
14    20 ms    23 ms    19 ms nuq04s01-in-f104.1e100.net [74.125.19.104]
In the past 4-5 evenings, I've had poor results:
Speed Test (speakeasy.net, Los Angeles): ~ 2441K/194K
Speed Test (speedtest.net, Los Angeles): always shows full provisioning ~19.74M, 4.56M, 19ms ping
Speed Test (speedtest.net, Dallas): ~ 8.28M/1.22M, 49ms ping
Tracing route to www.l.google.com [74.125.19.105]
over a maximum of 30 hops:
1    <1 ms    <1 ms    <1 ms myrouter.home [192.168.1.1]
2     7 ms     7 ms     7 ms xxxx.xxxxx-xxxxx-xxx.verizon-gni.net [173.55.xxx.xxx]
3   531 ms   502 ms   514 ms G4-0-6-1242.LSANCA-LCR-12.verizon-gni.net [130.81.140.162]
4   519 ms   506 ms   530 ms so-4-3-0-0.LAX01-BB-RTR2.verizon-gni.net [130.81.29.246]
5   563 ms   564 ms   553 ms 0.so-1-2-0.XL4.LAX15.ALTER.NET [152.63.10.125]
6   577 ms   544 ms   524 ms 0.ge-6-1-0.BR2.LAX15.ALTER.NET [152.63.116.153]
7   477 ms   469 ms   459 ms xe-10-1-0.edge1.LosAngeles9.Level3.net [4.68.63.129]
8    11 ms    17 ms    19 ms ae-93-90.ebr3.LosAngeles1.Level3.net [4.69.144.244]
9   515 ms   559 ms   536 ms ae-2.ebr3.SanJose1.Level3.net [4.69.132.9]
10    20 ms    19 ms    19 ms ae-83-83.csw3.SanJose1.Level3.net [4.69.134.234]
11   524 ms   499 ms   544 ms ae-3-89.edge1.SanJose1.Level3.net [4.68.18.142]
12   490 ms   479 ms   464 ms GOOGLE-INC.edge1.SanJose1.Level3.net [4.79.43.146]
13    24 ms    22 ms    32 ms 209.85.251.98
14    23 ms    22 ms   489 ms nuq04s01-in-f105.1e100.net [74.125.19.105]
Solved!
Go to Solution.

MisterJefferson, your problem looks to be with hop #3. That is a Verizon router just after the gateway router for you. This will need to be addressed by a Verizon Network technician. Your hops to your router and your hop to the gateway look fine. Verizon will need to reboot that second router or re-route your hops.
Chernabog, yours is more difficult, you dont have any obvious big issue. However you do have a moderate jump at hop number 8. this is off the verizon network and is out on the internet. on one of the ATT routers. Unlikely you are going to be able to do anything about this. And as it is off the Verizon network, there would be nothing verizon could do about it either. Usually though, if it is a router needing rebooting, it will generally self correct after a few days. Or you could be unlucky enough to be going through a system that is overloaded or just plain old. This can be frustraiting. I myself play a lot of online games and if the server is in Washington DC (I'm in California) one of the hops I have to go through is in kentucky with sprintlink and their routers constantly give me a 500ms ping and I havent been able to get it corrected in over 4 years. Something we sometimes have to live with when it is out of our control.
====================================================================================
Error exists between keyboard and chair.

AEB and disk speed

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How to increase disk read and write speed after installing new SSD (2009 Macbook Pro)? Why not as fast as advertised?

Hi everyone,
I just installed a Crucial MX10512 GB SSD into my 2009 Macbook Pro. It's definitely much faster, but the read and write disk speed is around 200 Mb/s for both versus the 300-500 Mb/s that the SSD advertised. Any ideas as to why? And is there anything I can do to make it faster? Before I installed it, it was between 80-90 Mb/s.
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nataliemint wrote:
Drew, forgive me for being so computer-incompetent but how would I boot from another OS? And shouldn't I be checking the read speeds on my current OS (Yosemite) anyways because I want to know how the SSD is performing on the OS I use? And finally, what kind of resources would it be using that would be slowing down my SSD?
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Maybe this one…
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Test the internal & compare to the previous tests
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Write/ read cache files from running apps
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Disk testing is an art & science in itself, see this if you want to get an idea …
http://macperformanceguide.com/topics/topic-Storage.html
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Just 150MB/s write in Blackmagic Disk Speed :(

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Flash Drive Speed Test?

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Cheers

Running QuickBench's small random test, I average the 4K, 8K, 16K, 32K, 64K, 128K, 256K, 512K, and 1024K random reads and writes.
RESULTS for the 128G Flash Storage on the 11" MacBook Air:
Random Read Avg = 96 MB/Sec
Random Write Avg = 94 MB/Sec
RESULTS for the 256G Flash Storage on the 13" MacBook Air:
Random Read Avg = 96 MB/Sec
Random Write Avg = 93 MB/Sec
RESULTS for other drives in a MacBook Pro:
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The OWC Mercury Extreme SSD = 149MB/s READ, 139MB/s WRITE
The Apple SSD = 100MB/s READ, 88MB/s WRITE.
Message was edited by: rob_ART

SSD Speed Test

Hi - I just installed this Samsung 850 Pro 512GB 2.5-Inch SATA III Internal SSD into my MacBook Pro Mid 2010 (running Maverick-10.9.5) and am getting 256MB/s (write) 268.0MB/s (read), when I should be getting "up to 550 megabytes per second (MB/s) and 520MB/s respectively". TRIM is enabled. Speed tested with Blackmagic design Disk Speed Test utility. Why is the discrepency? What about the following sentence (which I'm not sure I understand) "sequential read and write performance up to 550 megabytes per second (MB/s) and 520MB/s respectively". I'd appreciate a reply. I'm not a techie. Simple instructions would be appreciated. Thank you.

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Here are two other Minis (same 5400 rpm drive) hitting much higher marks:
http://www.youtube.com/watch?v=P2KOAUAqYiw#t=1m41s
http://www.youtube.com/watch?v=uPksGswN8Uk#t=0m18s

Thanks for the response, Allan. I was preparing to move most of the data to an external RAID setup when I ran that benchmark. It made me think twice about spending several hours setting up the system if in the end the system drive needs replacement.
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FileVault 2 and disk speed tests

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