Creating transactions takes much longer, when I set the block-size to absolute minimum.

Question

Hello!

I started some stress tests with various multichain configurations and found out that, if I set the block size to minimum, creating new transactions on one node takes much longer. 

Here are my results with default multichain configuration:

Multichain Configuration (1st attempt):

target-block-time = 15 
maximum-block-size = 8388608
anyone-can-connect = false
anyone-can-send = false  
anyone-can-receive = false
mining-diversity = 0.3
mine-empty-rounds = 10
skip-pow-check = false
pow-minimum-bits = 8
max-std-tx-size = 4194304

Result with default configuration (1st attempt):

200 000 Transactions 50 minutes 32 seconds.

Result with changed multichain configuration (2nd attempt):

target-block-time = 2
maximum-block-size = 1024
anyone-can-connect = true
anyone-can-send = true  
anyone-can-receive = true
mining-diversity = 0.0
mine-empty-rounds = 0
skip-pow-check = true
pow-minimum-bits = 1
max-std-tx-size = 1024

Result 2nd attempt:

200 000 Transactions 24 hours 15 minutes 20 seconds

Why creating transactions with this configuration takes much longer, than with the default configuration. I thought, when I set the block size and the transaction size to minimum, the blockchain would generate transactions much faster. It is also striking, that the hardware (RAM, CPU, HDD) workload was much higher, than the first attempt. 

Could you please explain that to me, or send me a link? 

 

I really appreciate any help you can provide.

Best regards,

Sandjar

Answer 1

The problem is that with 1 kb block size, you can only fit a few transactions in each block. Therefore the "memory pool" of unconfirmed transactions is growing very large, and it take a long time to process this and get it all confirmed in blocks. In other words, you're generating transactions far faster than they can be confirmed. There's no reason to ever set the block size so low.