Home web server v2 or Pro/Video/v3?

This forum is for Marvell Kirkwood devices such as the GoFlex Home/Net, PogoPlug v1/v2, SheevaPlug, and ZyXEL devices.

Home web server v2 or Pro/Video/v3?

Postby Dima85 » Thu Sep 13, 2012 8:08 pm

What is the best buy for a home web server? :)
Nginx + php.
Dima85
 
Posts: 24
Joined: Fri Jul 27, 2012 7:15 am

Re: Home web server v2 or Pro/Video/v3?

Postby mastashake57 » Mon Sep 17, 2012 4:14 pm

Personally...

- Cherokee
- PHP
- PHP-APC

Mind you, I'm on V2. Also, if you want to minimize memory usage, limit thread size:
$this->bbcode_second_pass_code('', 'ulimit -s 256')
mastashake57
 
Posts: 17
Joined: Tue Sep 04, 2012 8:56 pm

Re: Home web server v2 or Pro/Video/v3?

Postby Socaltom » Mon Sep 17, 2012 10:40 pm

I would go with the V2. The Pro can hit a bottleneck with the memory so even though it has more MIPS, you won't see them because of the memory limitations.
Tom
used to be owned by me
Pink Pogo V2, Black Pogo V3, Zyxel NAS 325 v1,
used to be Adminstrator for
Goflex net, Black V3, Black V2
Now I have a couple of raspberry pi ( 3+ and 4)
Socaltom
 
Posts: 571
Joined: Thu Apr 07, 2011 2:21 pm
Location: The left side

Re: Home web server v2 or Pro/Video/v3?

Postby karog » Mon Sep 17, 2012 11:23 pm

$this->bbcode_second_pass_quote('Socaltom', 'I') would go with the V2. The Pro can hit a bottleneck with the memory so even though it has more MIPS, you won't see them because of the memory limitations.
Tom

The V2 has 1191 BogoMIPS and the V3 has 2 cores each at 280 BogoMIPS. [As noted in the next msg, WRONG->] So the V2 has double the MIPS of the V3 and quadruple for a single thread.

See two messages below for a crude comparison of V2 vs V3 speed.
Last edited by karog on Tue Sep 18, 2012 3:37 pm, edited 2 times in total.
karog
 
Posts: 305
Joined: Thu Jan 05, 2012 7:55 pm

Re: Home web server v2 or Pro/Video/v3?

Postby WarheadsSE » Tue Sep 18, 2012 2:03 am

You know MIPS is subjective, yes? The Pro is dual-issue .. and .. anyways.. you're doing the math wrong because those numbers are wrong in the first place from the Pro. No, I am not saying that you're wrong in what they present, I am saying they are wrong in how they are calculated in the first place.
Core Developer
Remember: Arch Linux ARM is entirely community donation supported!
WarheadsSE
Developer
 
Posts: 6807
Joined: Mon Oct 18, 2010 2:12 pm

Re: Home web server v2 or Pro/Video/v3?

Postby karog » Tue Sep 18, 2012 3:32 pm

$this->bbcode_second_pass_quote('WarheadsSE', 'Y')ou know MIPS is subjective, yes? The Pro is dual-issue .. and .. anyways.. you're doing the math wrong because those numbers are wrong in the first place from the Pro. No, I am not saying that you're wrong in what they present, I am saying they are wrong in how they are calculated in the first place.

I didn't think BogoMIPS were actual MIPS but I had thought (wrongly) that they were comparable.

I wrote a little timed Fibonacci program to compare V2 vs V3. Crude but interesting. I ran fib(40)

V2 (1200MHz) 4860 ms
V3 ( 700MHz) 5022 ms
V3 ( 850MHz) 4140 ms

Note the V3's are dual core. On the V3 I ran the test twice at the same time and got similar ms for both. I then ran 3 at a time and the times were longer but the 3 times added up to triple the single time as expected.

So for a single thread, the V3 is about 3-4% slower than the V2 at stock 700 MHz. Overclocking to 850 MHz provides the expected speed increase.

I am not claiming this test is in any sense thorough. But it is in a gross sense illustrative.
Last edited by karog on Tue Sep 18, 2012 4:08 pm, edited 1 time in total.
karog
 
Posts: 305
Joined: Thu Jan 05, 2012 7:55 pm

Re: Home web server v2 or Pro/Video/v3?

Postby WarheadsSE » Tue Sep 18, 2012 4:00 pm

Yes, in a gross sense, single threaded performance is different at a roughly proportional rate to the difference of the processor clocks.

Why? The first part should be outright obvious. The second part is that despite being an armv6 compared to an armv5, we are not using armv6 specific instructions no the packages used by the oxnas, because it did not warrant an entire soft-float armv6-non-vfp repo be built, and still doesn't. The sheer number of devices using armv6, let alone without a vfp, is not large enough to warrant the time & resource expenditure. So while a v6-specific package comparison might make a small hedge of difference, it's not going to be "obvious" to the general populace.
Core Developer
Remember: Arch Linux ARM is entirely community donation supported!
WarheadsSE
Developer
 
Posts: 6807
Joined: Mon Oct 18, 2010 2:12 pm

Re: Home web server v2 or Pro/Video/v3?

Postby karog » Tue Sep 18, 2012 4:14 pm

$this->bbcode_second_pass_quote('WarheadsSE', 'Y')es, in a gross sense, single threaded performance is different at a roughly proportional rate to the difference of the processor clocks.

The 700 vs 850 clock difference on the V3 predicts rather precisely the test timing differences - no surprise.

The 1200 (V2) vs 700 (V3) not so much. The single thread of the V3 at 700MHz even with armv5 only instructions did much better than I expected - much to my delight - at nearly the speed of the V2 at 1200MHz. And then the V3 is dual core for double my pleasure.
karog
 
Posts: 305
Joined: Thu Jan 05, 2012 7:55 pm
Top

Re: Home web server v2 or Pro/Video/v3?

Postby WarheadsSE » Tue Sep 18, 2012 4:23 pm

And technically, it is dual-issue, not dual-core, but :mrgreen: loong long story on why that makes little difference to the end user.
Core Developer
Remember: Arch Linux ARM is entirely community donation supported!
WarheadsSE
Developer
 
Posts: 6807
Joined: Mon Oct 18, 2010 2:12 pm

Re: Home web server v2 or Pro/Video/v3?

Postby Socaltom » Tue Sep 18, 2012 7:52 pm

http://archlinuxarm.org/forum/viewtopic.php?f=29&t=1141&start=10

Check this thread. Pro vs V2 using the 7zip benchmark. The Pro should be capable of more calculations per second, but because it has 1/2 the memory it can hit a bottleneck.

Tom
used to be owned by me
Pink Pogo V2, Black Pogo V3, Zyxel NAS 325 v1,
used to be Adminstrator for
Goflex net, Black V3, Black V2
Now I have a couple of raspberry pi ( 3+ and 4)
Socaltom
 
Posts: 571
Joined: Thu Apr 07, 2011 2:21 pm
Location: The left side

Next

Return to Marvell Kirkwood

Who is online

Users browsing this forum: No registered users and 4 guests

cron