Technical Working Group: Scalability & Performance

To clarify: the limit you point to is the current throughput of tECDSA signatures per second that a subnet can produce (you need those in order to submit BTC transactions so of course the limit on those sort of implies a limit on the BTC transactions themselves).

AFAIK, the current implementation of tECDSA is not super optimized, so I would expect that this limit can be increased eventually. Likely there is going to be some limit on what a single subnet can do (the protocol is quite complex) but there is always the possibility to allow more subnets to sign using tECDSA which means we can “scale out” the throughput of these operations on the IC as whole.


Hey everybody,

we’ll be moving this week’s session to next week same time:

Thursday, February 23rd 5:30pm CET (GMT+1).

I’ve already updated the calendar.

We’ll have another session on using storage on the IC. We’ll prepare a survey that we’ll share before the session and want to discuss the results in the session.

Sorry for the late notice and I hope many of you can join nevertheless.


Hey everybody :wave:,

In preparation for the WG session this week, we’d like to invite you to take a quick survey on how you use memory on the IC:

Please participate and join the WG on Thursday where we’d like to discuss the results. :pray:


Hey everybody :wave:,

The Working Group is happening in about 40 mins (5:30pm GMT+1).

We’ll discuss the results of the survey and @senior.joinu will give an update on on the ic-stable-memory rust library.

See you soon!


Belated update:

slides with the responses from the survey and the recording.

Some topics from the discussion:

If you watch the recording and have thoughts please feel free to add them here.


We have also a request to move the working group from Thursdays at 5:30 pm CET (GMT+1) to Wednesdays at 6:30 pm CET (GMT+1). Are there any objections to that? Note that we’d still use the cadance of every 3rd Wednesday of a month.

@lastmjs @dymayday @skilesare @senior.joinu @icme @dsarlis @claudio @abk @stefan-kaestle @saikatdas0790


Hey @domwoe, will the move to 18:30 permanent ?
Sorry for being late on the mater but I feel it is kinda late as it is the time dedicated to the kids for me.

I really enjoy this working group and I don’t want to sounds selfish though. This is why I’m asking if this is the permanent schedule from the on.

Hey @dymayday,

we wanted to change the date because @abk will take over the DFINITY lead of the working group, and the time didn’t really fit for him. However, he read your response and made it work :muscle: .

So Update

We won’t change the date/time of the Working Group. This means we will have the next session, this Thursday at 5:30pm CET!


Hey everyone,
For the WG tomorrow I’ll be presenting some benchmark results comparing the ic-stable-structures and ic-stable-memory libraries, as well as sharing some tips on efficiently using stable memory. This should be useful for those of you planning to store significant data in stable memory.


Updated meeting notes and recording.

Edit: Added link to slides to the meeting notes.


@domwoe and @abk we recently joined the forum, and find this Technical Working Group to be really important to everyone who is building, or would like to build an ambitious DAPP.

I will do my best to join the next meeting on Thursday, April 20th.
Have a wonderful Easter everyone, and a good Passover too.

P.S. Thanks so much for sharing the slides and videos!


Welcome @josephgranata,

I remember that we already had interactions on Twitter. Good to have you here!

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Thanks, the feeling is mutual.

Have a great Holy Week, and Happy Passover too :wink:

Join us tomorrow, Thursday, April 20th at 5:30 pm CEST (GMT+2) for the next session of the Scalability & Performance WG.

We’ll have presentations from OpenChat, DSCVR, and Dragginz about their ideas and approaches toward sharding data across canisters.

Pretty exciting, right? Hope to see many of you there for a lively discussion.

Zoom link

Update: Meeting notes and recording


Are any of these sessions recorded?

yep, the check the links in the meeting notes

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we’ll move this month’s working group session by one week to May 25th because there’s a holiday in Switzerland this Thursday.

See you next week!

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Hey everyone!
For the session this Thursday @senior.joinu will discuss the design of a new multi-canister storage library and we’ll give an overview of the Storage+Scaling ICP.Lab. Hope to see you there!


Details: Thursday May 25th at 5:30 pm CEST (GMT+2) Zoom link


In case somebody needs my presentation on union-db:

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Hey @senior.joinu, your presentation is sweet. I’m sorry I missed the meeting. I’m pretty sure that canDB gets you 65% of the way to what you want. Transactions are hard and item-level locking is complicated, but it isn’t impossible. CanDB is open source and I’d encourage you to fork, seed pull requests, etc. I’d love to get @icme 's thoughts on what you put together and how it differed from what you are presenting.

I couldn’t participate as well, but happy to be able to share the recording.

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