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Chat Area => General Discussion Area => Topic started by: Mr Skrunts on 17 July 2008, 22:52:38

Title: Some Maths Help Please
Post by: Mr Skrunts on 17 July 2008, 22:52:38: If my computer averages 640 Kb sec I have just work out I will download 27 GB in 12 Hours. Could some one do the sums and tell me if I am right or wrong.

TIA. :y
Title: Re: Some Maths Help Please
Post by: Brian T on 17 July 2008, 22:59:43: (640 kbps) x 12 hours = 3.29589844 gigabytes
(640 kBps) x 12 hours = 26.3671875 gigabytes

Careful how you type your B's as you know one is bits and one is Bytes
Title: Re: Some Maths Help Please
Post by: Entwood on 17 July 2008, 23:00:29: 27 Gb = 27 x 1,073,741,824 bytes ( 1 Gb = 2^30 )

= 28991029248 bytes

640 Kb =640 x 1024 ( 1 Kb = 2^10)

= 655360 bytes

28991029248 / 655360 = 44236.8 seconds

= 737.28 minutes

= 12.288 hours

always assuming the download rate remains constant... and no packets require resending..... of course .. :)
Title: Re: Some Maths Help Please
Post by: Mr Skrunts on 17 July 2008, 23:00:35: Kb Sec x Time Sub Div Total

640 60 Sec 38,400 1024 37.50
   60 Mins 2,304,000 1024 2,250.00
   12 Hours 27,648,000 1024 27,000.00

720 60 Sec 43,200 1024 42.19
   60 Mins 2,592,000 1024 2,531.25
   12 Hours 31,104,000 1024 30,375.00

800 60 Sec 48,000 1024 46.88
   60 Mins 2,880,000 1024 2,812.50
   12 Hours 34,560,000 1024 33,750.00
Title: Re: Some Maths Help Please
Post by: Brian T on 17 July 2008, 23:03:59: I failed maths at school because I could never be arsed writing down all the workings out.

Bloody swats! ;)
Title: Re: Some Maths Help Please
Post by: Mr Skrunts on 17 July 2008, 23:04:22: I have monitored the speeds on a chart and they dont frop below 640 KB, I can speed it up to over 800 Kb dropping to 720 Kb. So I did the sums based on the minimum speeds.

I am on a fair usage allowance from 4pm to midnight do I have stopped yesting for now.

But am going to start a 12 hour trial at might night and see what I achieve.
Title: Re: Some Maths Help Please
Post by: Vamps on 17 July 2008, 23:06:08: Quote
27 Gb = 27 * 1,073,741,824 bytes ( 1 Gb = 2^30 )

= 28991029248 bytes

640 Kb =640 x 1024 ( 1 Kb = 2^10)

= 655360 bytes

28991029248 / 655360 = 44236.8 seconds

= 737.28 minutes

= 12.288 hours

always assuming the download rate remains constant... and no packets require resending..... of course .. :)

:-? :-?
Title: Re: Some Maths Help Please
Post by: Mr Skrunts on 17 July 2008, 23:06:23: Some different ways of working out but I seem to be near on my dums.

Cheers Guys. :y :y
Title: Re: Some Maths Help Please
Post by: Vamps on 17 July 2008, 23:06:40: Quote
Kb Sec x Time Sub Div Total

640 60 Sec 38,400 1024 37.50
   60 Mins 2,304,000 1024 2,250.00
   12 Hours 27,648,000 1024 27,000.00

720 60 Sec 43,200 1024 42.19
   60 Mins 2,592,000 1024 2,531.25
   12 Hours 31,104,000 1024 30,375.00

800 60 Sec 48,000 1024 46.88
   60 Mins 2,880,000 1024 2,812.50
   12 Hours 34,560,000 1024 33,750.00

:-? :-? :-?
Title: Re: Some Maths Help Please
Post by: Andy B on 17 July 2008, 23:31:52: I'm with you Mike f! :-? :-/
And I always thought I was reasonably good at sums! ;D :y
Title: Re: Some Maths Help Please
Post by: SWMBO on 17 July 2008, 23:34:36: I just wanted to make a quick reply to say how much I hate this board.

There I am innocently winding down to get to bed. I come over to my pc to make sure things I want off on the pc are off.., look over my shoulder to peek at what my other half is doing and I see reams of numbers and calculations GB and Kilobits and bytes. Oh god, not just before I go to bed please. Have u guys no sense of decorum?

Before u ask, I use blueyonder, and get enuf download bandwidth to do what I want.., (20Gb or 50 on one occasion lol, PC nearly died on me then). Thats all I need to know folks.., its enuf lol :P
Title: Re: Some Maths Help Please
Post by: Mr Skrunts on 17 July 2008, 23:37:25: Quote
I just wanted to make a quick reply to say how much I hate this board.

There I am innocently winding down to get to bed. I come over to my pc to make sure things I want off on the pc are off.., look over my shoulder to peek at what my other half is doing and I see reams of numbers and calculations GB and Kilobits and bytes. Oh god, not just before I go to bed please. Have u guys no sense of decorum?

Before u ask, I use blueyonder, and get enuf download bandwidth to do what I want.., (20Gb or 50 on one occasion lol, PC nearly died on me then). Thats all I need to know folks.., its enuf lol :P

Hope you arent doing any thing naughty downloading movies. ;D ;D
Title: Re: Some Maths Help Please
Post by: SWMBO on 17 July 2008, 23:37:58: I did mention something along those lines (4.5 Gb in 10 mins) but Jue made me delete it ha ha
Title: Re: Some Maths Help Please
Post by: JueV6 on 17 July 2008, 23:42:38: I was told about asking if someone had a spare satnav cd. Admin thought I was asking for a copy and i wasn't, so I just informed swmbo of that and SHE deleted it, ;D ;D
Title: Re: Some Maths Help Please
Post by: Mr Skrunts on 18 July 2008, 01:02:28: just done a speed test

59.9 Seconds
42.42 MB
800.1 KB/Sec Max
724.1 KB/Sec Average

So on target. :y
Title: Re: Some Maths Help Please
Post by: Mr Skrunts on 18 July 2008, 01:04:55: Am down loading loads of wallpaper backgrounds from a site. Here's a sample.

(http://i278.photobucket.com/albums/kk106/skruntie/WW308_leRevenant_SearchForLife1024.jpg)
Title: Re: Some Maths Help Please
Post by: willyboy on 18 July 2008, 01:30:01: Blimey ! my Angelina Jolie wallpaper far more interesting ! ;)
Title: Re: Some Maths Help Please
Post by: Marks DTM Calib on 18 July 2008, 08:31:05: Quote
just done a speed test

59.9 Seconds
42.42 MB
800.1 KB/Sec Max
724.1 KB/Sec Average

So on target. :y

I still think everybody is getting thier bit, bytes, meg and gig mixed up!

Remember that download speed is measured in bytes as its a serial stream, files are measure in bytes as they are stored as hax values.

I suspect Skruntie is getting 724 Kbits per second download which in file terms is 90 Kbytes per second.

Two reasons why I suspect this.

1) If you were working in the Kbytes area then you would getting a sustained download speed close to 6.4Mbits....and given the loading on the internet servers and routers etc, I cant see that being achieved. Remember that 8M broadband is the pipe speed, not the through put speed!

2) Plus net are good, but not that good!
Title: Re: Some Maths Help Please
Post by: Mr Skrunts on 18 July 2008, 09:17:31: Quote
Quote
just done a speed test

59.9 Seconds
42.42 MB
800.1 KB/Sec Max
724.1 KB/Sec Average

So on target. :y

I still think everybody is getting thier bit, bytes, meg and gig mixed up!

Remember that download speed is measured in bytes as its a serial stream, files are measure in bytes as they are stored as hax values.

I suspect Skruntie is getting 724 Kbits per second download which in file terms is 90 Kbytes per second.

Two reasons why I suspect this.

1) If you were working in the Kbytes area then you would getting a sustained download speed close to 6.4Mbits....and given the loading on the internet servers and routers etc, I cant see that being achieved. Remember that 8M broadband is the pipe speed, not the through put speed!

2) Plus net are good, but not that good!

Downloaded since Midnight.

Meter says 22.4 GB in 9 hours.

Currently averaging 782.Kb/s

Properties on hard drive (was formated before dowloading)

19,162.640.384 bytes 17.9GB

Speed Test Results (8 MB Connection)

Date Download Speed Upload Speed
Jul 12, 00:40 6161 kbps (770kB/s) 709 kbps (88.6kB/s) Share
Jun 5, 08:42 6306 kbps (788kB/s) 708 kbps (88.5kB/s) Share
May 31, 17:37 6107 kbps (763kB/s) 713 kbps (89.1kB/s) Share