Questions tagged [performance]

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Feasibility of a distributed decentralized ledger [on hold]

The globatio team provides the whitepaper for decentralized distributed ledger that can support fast transactions and new applications through the use a main chain for decentralization a sidechains ...
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1answer
16 views

My bitcoint-qt client is crashing due to insufficient file descriptors repeatedly even after I set the ulimits to 65535

What are the exact resource requirements for a bitcoin-qt client. this is important and hard to find information. In virtualization world those things need to be understood. :) I am running a KDE 18....
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1answer
68 views

Question about Vanitygen performance

I just read a blog about someone rent an AWS hpc & run Vanitygen to get a vanity address & some of the latest 2018 performance. Assume i have some of the top supercomputer these days(Sierra, ...
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1answer
433 views

Extremely slow syncing speed while starting bitcoin-qt on HDD [duplicate]

I'm sorry for adding dupelicate question (e.g. How to speed up initial block chain sync using SSD without wasting space?), but I observered a dramatical speed increase while using RAMDisk or some disk ...
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1answer
1k views

Compare altcoins in one chart

Is there a website where I can compare several altcoins in one chart? In particular, I am looking for a chart where each coin, that I want to consider, starts with the same value (say a value of 100$)...
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1answer
163 views

What indexes does a Bitcoin Core node maintain to serve Bloom-filtered requests and SPV peers?

The Wiki makes this statement: It [getdata message] can be used to retrieve transactions, but only if they are in the memory pool or relay set - arbitrary access to transactions in the chain is not ...
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2answers
2k views

How to specify number of threads for bitcoind?

What field in config file or flag should I use to run bitcoind -daemon e.g. on 100 threads? Now I have 23 threads, but I want to increase this value. $ ps aux | grep bitcoind pavlovd+ 1258 2.3 1.7 ...
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1answer
11k views

What is the maximum number of transactions per seconds on Bitcoin Cash?

What is the maximum number of transactions per seconds on Bitcoin Cash? I know that on Bitcoin (BTC) is was 7 tx/s.
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1answer
403 views

Warning: Reducing -maxconnections from 1000 to 865, because of system limitations

I want to be the fastest/first one at recognizing/receiving new transactions, so i set i set these in bitcoin.conf and running a bitcoin full node on dedicated centos server. maxconnections=1000 ...
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1answer
73 views

Regtest setup to analyze the protocol

I'm currently working on my bachelor thesis in which I have to analyze which are the scalability issues the bitcoin protocol has and try to see how it react changing different parameters ( for example ...
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1answer
325 views

Performance and modularity of Bitcore vs Toshi

I have been reading about both, BitPay's Bitcore and Coinbase Toshi, and although they both claim to be highly scalable I could not find information in order to compare them in terms of performance ...
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1answer
362 views

How to calculate signature generation, signature verification, transaction verification speed?

I read this post on Bitcoin Scalability. As far as I understand sequence of steps in Bitcoin, simplified version of performing transaction should be following: On Sender's side: Create transaction ...
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1answer
226 views

Why my mining has average so low

I bought a YellowJacket to mine bitcoins. I'm using my raspberry pi to test it. My actual configuration is: Raspberry pi using the usb from a laptop. With 1 yellow jacket. Software cgminer 4.9.2 My ...
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3answers
6k views

Possible to speed up reindex?

I just reindexed a node that was already synced (in order to enable txindex); it took around 9 hours. It's on a pretty good system: 16G RAM, i7 with 4 physical cores. Storage is a weak point, with ...
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1answer
45 views

Any advantages in terms of our location & East-West timing differences for self mining on a 100 th/s btc rig

I do live in india.. I believe that bitcoin mining rig owners are very lessaound us ..I read some where that we will be able to mine more bitcoins while the west or far-east sleeps..
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1answer
1k views

Bitcoin Performance: What does Hashes/Second Mean?

Computing preimages (nonces) that satisfy a hash output with known property (minimum number of prefixed zeroes) is the foundation of bit-coin mining and block-chain validation. For this purpose, all ...
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1answer
3k views

Fastest cryptocurrency

What cryptocurrency is the fastest in terms of reaching 100% transaction confirmation? I've found sites like this that show that Fastcoin is the fastest at 48 seconds. I think David Schwartz said ...
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2answers
4k views

Difference in hashrate between two GPUs

I am a gamer who simply uses his rig to mine when idle. A year ago I was getting 0.5 Ghs using a Radeon HD7970 3072MB 384bit OC Boost, then due to a technical issue I stopped mining for a few months ...
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1answer
52 views

Can I sign and redeem many outputs at the same time? (shrink the size of a tx Input)

I'm looking at this transaction that is redeeming many historical outputs from the same address. When I look at the blockchain, it seems pretty clear there is redundancy here of the public key being ...
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3answers
10k views

Can I use one graphics card for games and one for Bitcoin mining, without losing performance?

I have a GTX660 right now, but I bought an R9 290x recently. I was wondering if I can leave both in my pc and use one (the GTX660) for Bitcoin mining and one (the R9 290x) for everything else (mostly ...
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2answers
116 views

How would an Auditor (“m”) of BIP32 audit the keys generated by the master?

Suppose an auditor needs to review all the incoming Tx for a given wallet... or many wallets. What are the logical steps the Auditor needs to do? Do they need to pre-generate a list of all possible ...
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2answers
148 views

Will the performance of calculating the balance for an address degrade over time?

If balances are calculated on the fly by offsetting all the transactions flowing in and out of a public address, will this degrade the performance of calculating such balances in years to come, i.e. ...
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1answer
109 views

What parts of Bitcoin (litecoin etc) are Little Endian?

As mentioned on this Hardfork Wishlist, many developers want Bitcoin to be entirely Big Endian for consistency and performance reasons. I'm looking for a concise list of all the areas that Bitcoin ...
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0answers
192 views

CGMiner settings so that Photoshop usage isn't slow

Currently I have two settings for CGMiner, using a Radeon 6850 for home usage. One for casual work, and one for night-time (light and heavy). However, even at the casual settings Photoshop is very ...
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2answers
791 views

Block confirmation speed

Based upon any standard you think relevant, how quickly are current blocks being verified for rule-following such as correct balance tallies, true transactions, correct rewards & fees? Is this an ...
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3answers
3k views

How to increase the speed of synchronisation?

What ways are there to increase the speed of synchronisation of the network, assuming the use of the main Bitcoin client?
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2answers
786 views

How much time it takes to verify a Bitcoin signature in the Satoshi client?

Assuming: An average modern computer Using a single thread, as the current Satoshi client does Using the OpenSSL library, as the Satoshi Bitcoin client does The signature is not in the signature ...
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1answer
1k views

How do I optimize my usage of oclvanitygen?

I'd like to extract the most performance possible from oclvanitygen. Can anyone tell me what the best practices are with this tool? Examples may include: Use operating system X, or video card Y ...
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1answer
228 views

Bitcoin core for Mac OS X stuck at the 95% mark for hours

My Bitcoin Core app (the latest OS X client) is downloading the chain. It has been at the 95% mark for many hours now. It's progressing, but very slowly. Is this normal? I would think so, because ...
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1answer
2k views

Why does merely having Windows Media Player open double my GPU hashrate?

I'm using poclbm to mine under Windows... processor is an AMD A6-3400M with integrated Radeon HD 6250G GPU. When Windows Media Player is closed, I get a rate of 16 megahashes/second, but when it is ...
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1answer
1k views

Why is bitcoind so slow on VPSs?

Sometimes it takes bitcoind more than a minute to respond to basic RPC calls such as getbalance (and on average, it takes at least 5 seconds), even though the "STAT" according to the Linux 'ps' ...
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4answers
3k views

Why does Bitcoin make my computer lag/freeze?

Whenever I run bitcoin, my computer (Dell E4200 running Ubuntu 12.04, with AwesomeWM) lags quite heavily. It will operate normally for 10-15 seconds, then 'freeze' for 10 to 15 seconds, during which ...
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5answers
28k views

How many MB of data does my bitcoin client have to download to be fully sync'd?

Best guess/calculation? I transferred some bitcoins to my new wallet after generating an address. This was this morning, and have had my bitcoin wallet syncing all afternoon (5 hours), so far it has ...
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1answer
77k views

How to quickly check your mining speed?

Is there some website that provides some webminer or other way for a person to check their mining speed without actually joining any pool or doing solo mining? Alternatively, are there some miners ...
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2answers
347 views

Uptime and other service performance levels

Other payment networks have scheduled maintenance periods as well as unscheduled outages but Bitcoin's network, being decentralized, can have varying service levels depending on: which versions of ...
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7answers
67k views

Can I download the whole block chain from somewhere?

Every time I turn on the Bitcoin client it takes days to catch up with the block chain. Are there alternatives to getting it trickling through the peer-to-peer network? Can I just download it ...