Bitcoin Forum
June 19, 2018, 06:50:31 PM *
News: Latest stable version of Bitcoin Core: 0.16.1  [Torrent]. (New!)
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: Hash rate question - WTF variance?  (Read 913 times)
evoorhees
Legendary
*
Offline Offline

Activity: 994
Merit: 1000


Democracy is the original 51% attack


View Profile
October 01, 2011, 08:20:45 PM
 #1




This is the familiar screenshot taken from Bitcoinwatch.com.

Why would the range oscillate within about 1.5 terahashes for a few days, then soar almost 3 terahashes in one day? That is an increase of like 35%

I would like some explanation from any smart people out there... you would think the rate would follow a much more normalized 24-hr pattern. Is it a week vs. weekend thing? wtf?
1529434231
Hero Member
*
Offline Offline

Posts: 1529434231

View Profile Personal Message (Offline)

Ignore
1529434231
Reply with quote  #2

1529434231
Report to moderator
1529434231
Hero Member
*
Offline Offline

Posts: 1529434231

View Profile Personal Message (Offline)

Ignore
1529434231
Reply with quote  #2

1529434231
Report to moderator
Automated Bitcoin Fork Extraction Tool WE DO TOUGH WALLETS: BCH | BTG | BCD | SBTC | UBTC | B2X | BCX | BTF Electrum 2FA, Trezor, Ledger, SegWit, Bech32
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1529434231
Hero Member
*
Offline Offline

Posts: 1529434231

View Profile Personal Message (Offline)

Ignore
1529434231
Reply with quote  #2

1529434231
Report to moderator
1529434231
Hero Member
*
Offline Offline

Posts: 1529434231

View Profile Personal Message (Offline)

Ignore
1529434231
Reply with quote  #2

1529434231
Report to moderator
elggawf
Sr. Member
****
Offline Offline

Activity: 308
Merit: 250



View Profile
October 01, 2011, 10:13:49 PM
 #2

As I understand it the "hash rate" is a guess based on the frequency of blocks, and because the blocks are mostly random intervals that's why the hash rate swings all over.

^_^
evoorhees
Legendary
*
Offline Offline

Activity: 994
Merit: 1000


Democracy is the original 51% attack


View Profile
October 02, 2011, 05:27:45 AM
 #3

This has indeed happened before, and it will happen again. Like you, I wonder why.

We used to explain it by saying "mystery miner", kind of like "the manipulator" of today.

Oh I wasn't saying it's a new phenomenon, it happens all the time. The pic I posted is just a good example of it.
maaku
Legendary
*
Offline Offline

Activity: 905
Merit: 1000


View Profile
October 02, 2011, 07:13:02 AM
 #4

I would expect about 9% variance due simply to random chance if this metric were calculated with a sliding window of one day. I would expect even larger variance if that sliding window were smaller (as appears to be the case here).

Note that there is also a strong periodic daily cycle causing swings up and down, and almost certainly due to those miners turning their machines off at night.

I'm an independent developer working on bitcoin-core, making my living off community donations.
If you like my work, please consider donating yourself: 13snZ4ZyCzaL7358SmgvHGC9AxskqumNxP
Pages: [1]
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!