In this video, I'm doing a quick talk about what MIRA is and what it brings to us but why I decided to not enable it on my Witness node.
As our blockchain grows, it will will require a lot of memory in order to have a good performance. Luckily, thanks to MIRA, it is now possible to store the state on disk rather than on memory while maintaining decent performance. The only issue with using MIRA is replay time, that is traversing the blockchain in order to create the state on disk. Without MIRA, it takes my server 20-22 hours to replay the whole blockchain, with MIRA enabled, my server only reached 34% in the same time frame. I'm not saving that much on downgrading the server so increasing the replay time for a little bit of saving is not worth it in my opinion. For a new Witness or launching a full RPC node, it's probably worth considering.
I have not upgraded from v0.20.10 to v0.20.11 without MIRA either because at the time of testing, there were a few bugs that prevented me from compiling steemd without MIRA support. So for the time being, I will wait for the next version to come out when everything will be more stable.
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Thanks for sharing your reasons for not support MIRA
There are so many good things are happening with STEEM and our Ecosystem getting bigger and more powerful everyday
Good STEEM times are ahead & Looking forward to meeting you in person in Thailand for SF4
Thanks for the feedback.
I do support MIRA, it’s an improvement especially for those running a full node. But it’s not a benefit for everyone, so who ever runs a node need to assess their needs.
Unfortunately, I won’t make it to SF4 as it’s not possible both financially and for work reasons. I hope you will enjoy it.
Posted using Partiko iOS
With all the hype surrounding MIRA, it's surprising that any witnesses wouldn't enable this feature...but 72 hours vs 22 hours? I can see why MIRA would be a significant downgrade for you.
Posted using Partiko Android
And I'm only a backup witness, for top20 witnesses it's even more critical to be able to replay fast.
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