Recent mainnet checks put a leveraged borrow at roughly 1.84 million gas, against about 125,000 for a plain stablecoin swap. That is close to fifteen times the work, not a rounding error. If you have ever watched a position sweat while the mempool filled up, you already know why protocol teams care less about a prettier number on a dashboard and more about whether the heavy transaction actually lands.
Why Glamsterdam Is Being Judged On Congestion, Not Slogans
The Ethereum Glamsterdam upgrade is being sold, in some corners, as a simple capacity story. More gas per block, more room for everyone, fees drift lower, end of debate. I do not buy that version. Capacity is the invitation. Inclusion is the party. A higher ceiling means very little if the transactions people actually need still queue behind noise when volatility hits.
Teams close to lending markets have been unusually blunt about the yardstick. They want to watch inclusion times and the fees users really pay when demand spikes. They also want validation to stay practical. Scale that only a specialist lab can check is not scale in the original Ethereum sense. It is a private ledger with extra steps.
What we think should be watched most closely is execution under real load.
Lending protocol team, on how to judge added capacity
That line is the whole argument in one breath. A quiet Sunday afternoon will flatter almost any chain. The interesting hour is the one where liquidators, borrowers, oracle updates, and arbitrage bots all want the same block. If Glamsterdam only looks good in a lab, it will not change how a leveraged book feels on a bad Tuesday.
The Gas Gap That Quietly Shapes Who Gets In
Here is the comparison that stuck with me. A direct stablecoin swap, the kind a casual user might fire off without thinking, landed near 125,000 gas. A leveraged borrow on the same network consumed about 1.84 million. Divide those figures and you get roughly 14.7 times the gas. Not a different planet. Still, a very different ticket price when the block is tight.
Why does that matter more than a chart of average fees? Because average fees hide the shape of demand. Light swaps can still clear while heavy, multi-step loans get elbowed. Congestion does not treat every user the same. It sorts them. The sort is rarely kind to the person trying to add collateral, open a borrow, and buy the asset in one motion.
I have found that people outside lending underestimate how many moving parts sit inside one “borrow.” Oracle reads, collateral accounting, debt minting, a swap route, sometimes a second hop if the pool is thin. Each piece can stall. When blockspace is scarce, the stall is not theoretical. It is a position that ages while the market keeps moving.
| Action | Rough gas | What congestion does |
| Direct stablecoin swap | About 125,000 | Often still fits when blocks are busy |
| Leveraged borrow | About 1.84 million | Competes hard, delays hurt more |
| Borrow plus collateral buy | Higher still, multi-step | Several failure points in one intent |
| Liquidation-related arb | Varies, often heavy | Timing decides whether the book tracks price |
Those numbers come from mainnet checks, not a whiteboard. They are a snapshot, not a law of physics. Routes change, contracts get optimized, and a different collateral pair will not match the figure exactly. The ratio is the point. Complex credit is gas-hungry. Any upgrade that claims to help DeFi has to help that class of transaction, not only the cheap swap that already clears.
Blockspace Is A Queue, Not A Vending Machine
Think of a block as a ferry with a weight limit. A scooter rolls on. A loaded truck waits. Raise the limit and more trucks fit, until a holiday weekend shows up and the ramp fills anyway. Ethereum’s gas limit is that weight rating. Demand is the holiday. Glamsterdam is an attempt to raise the rating without snapping the ramp.
Perhaps the most interesting aspect is how little the headline limit tells you about a user’s afternoon. Two people can pay “market” fees and have opposite experiences. One swaps a stablecoin and is done. The other is mid-loop on a leveraged position, watching inclusion slip by a block, then two, then enough for the price to move through a band that changes the whole trade. Same chain. Different weather.
Protocol teams watching this upgrade have been clear that added room should help borrowers, arbitrage traders, and liquidators when demand is heavy. That is a narrower claim than “fees go to zero.” It is also a more honest one. I would rather a fork deliver reliable room for ugly transactions than a press line about theoretical throughput.
What A 200 Million Gas Test Actually Proves
Developers have prepared a test setting around 200 million gas, up from a live neighborhood near 60 million. That is a large jump on paper. It is also not a promise that mainnet will adopt the same ceiling on day one. Test settings exist so clients, builders, and node operators can see what breaks. Treating a test limit as a mainnet commitment is how rumors get born.
Client release notes around the public test schedule matter here. One widely used consensus client, in a point release, wired the test network so validators would default to the 200 million figure after the fork. The version just before it could support the upgrade and still sit on the old 60 million setting unless an operator changed the config. Small detail. Real consequence. Defaults decide what a busy validator actually runs when nobody is watching the flag.
If you operate a node, that is the sentence to underline. Support for a fork and a new gas default are not the same switch. A fleet that “upgraded” but left the old ceiling in place will not show you the behavior everyone is arguing about. Public tests only teach what the participating clients are actually configured to do.
- A 200 million gas figure on a test network is a rehearsal, not an automatic mainnet rule.
- Client defaults can move the ceiling even when operators do not touch a config file.
- Older point releases may understand the fork and still keep the prior limit.
- Activation dates for later public networks and mainnet were still unset when the test talk started, pending client agreement.
I keep coming back to that last point. Dates slip when clients disagree, and they should. Shipping a gas jump because a calendar looked tidy is how you discover a validation problem in production. The absence of a locked mainnet slot is not drift. It is the process working, slowly, in public.
Cheaper Execution And The Trades Nobody Bothers With Today
There is a quieter benefit that lending and pool teams keep mentioning, and it is easy to skip if you only think about liquidations. Smaller arbitrage trades often die on fees. The edge is real, the route is a bit long, and after gas the profit is a rounding error. Raise usable capacity and some of those crumbs become worth picking up.
Longer swap routes get the same treatment. A path through three pools can be the fairer price, and also the one nobody takes because it costs more to land than it saves. If execution gets cheaper without turning validation into a specialist sport, those routes should show up more often. Better prices in pools are not a slogan. They are the sum of routes that suddenly clear.
Opening and unwinding positions gets easier in the same breath. A user who can exit without donating half the edge to a crowded block is a user who will use the market again. I have watched people abandon a venue not because the design was wrong, but because the exit felt like a coin flip. Reliability is a product feature. It just does not fit on a fee chart.
None of this requires every action to get cheaper. That caveat is doing a lot of work, and it is the right one. State charges are being revised. Some transactions will ask for more gas, not less. A fork can expand the ferry and still reprice the trucks. Both things can be true on the same afternoon.
Liquidations Only Help If They Arrive On Time
Sharp moves turn blockspace into a scrum. Liquidators want in. Oracle updates want in. Borrowers want to add collateral or repay before a band is crossed. Extra capacity can help those transactions land. It does not retire the scrum. Larger blocks still face demand. Anyone promising a calm mempool during a crash is selling weather.
For one well-known lending design, the sensitive piece is the liquidation engine that sells collateral across a range rather than in a single cliff. The nickname in circulation is LLAMMA. The idea is elegant on a whiteboard. Collateral walks through bands, arbitrage keeps the internal price near the market, and the stablecoin backed by that system stays calmer than it would under a binary liquidation. Elegance dies if the arbitrage cannot get into a block.
Cheaper, faster arbitrage should let that mechanism track external prices more tightly as collateral passes through the range. Delays are where the losses hide. Price moves, the transaction is still pending, the band is stale, and the book eats a gap that did not have to exist. Cut the delay and you cut a class of loss that has nothing to do with the borrower’s thesis and everything to do with the queue.
That is also why dependable liquidations get tied to stablecoin confidence. A dollar-pegged asset inside a lending system is only as calm as the process that defends it. If liquidations stall, the peg story becomes a hope. If they clear, the design gets to do the job it was written for. Glamsterdam will not invent that design. It might stop the chain from interrupting it.
A higher gas ceiling offers limited practical benefit if transactions still stall when the chain is busy. The measurements that matter are how fast a transaction enters a block, and what the user pays when everyone wants the same slot.
Volatility is the exam. Users need to act on positions, not wait for the crowd to thin out. I would rather watch a week of messy markets after activation than a month of calm averages. Calm averages are how upgrades get graded too kindly.
State Repricing Can Raise The Bill On Purpose
Alongside the capacity talk sits a less comfortable change. Glamsterdam reprices state operations. Creating state and touching state are not free in spirit, and the new schedule intends to charge them more honestly. Some actions will need more gas. That is not a bug report. It is the point of the repricing, and it will surprise anyone whose wallet still assumes last year’s constants.
Two proposals sit at the center of that shift. One changes the cost of creating state, including fresh accounts and contract storage. The other revises what it costs to access state that already exists. Together they nudge the chain away from underpricing the thing that actually makes nodes heavy: not the arithmetic, the remembered data.
Developers flagged compatibility risk well before the public gas test. Transaction replays suggested most contracts were fine. Many of the failures that did show up could be fixed by supplying a higher gas limit. That is reassuring and also a trap. “Just send more gas” works until the caller has a fixed allowance baked into the bytecode.
- Fixed gas allowances inside contracts can fail when a callee suddenly costs more.
- Hardcoded call limits make the same mistake in a different costume.
- Gas-sensitive logic, the kind that branches on leftover gas, can take the wrong path.
- Wallets, infrastructure, and estimators that cache old assumptions will quote badly until they are updated.
If you ship smart contracts, this is the unglamorous homework. Replay your flows against the new schedule. Raise limits where you control them. Stop assuming a storage write costs what it cost when you deployed. The teams urging tests before mainnet activation are not being theatrical. A reverted borrow during a volatile hour is a user-facing incident, not a GitHub curiosity.
Wallet builders have a cousin of the same job. Gas estimation that leans on cached constants will underquote, users will set a ceiling that is secretly too low, and the failure will look like “the chain is broken.” It will not be. The estimator will be living in a previous fee schedule. I have seen that movie on smaller parameter tweaks. It is avoidable, and it is still the thing most front ends leave until the week of the fork.
Validation Has To Stay Something You Can Do Without Asking
Capacity has a shadow. If blocks get so heavy that ordinary hardware cannot check them, the chain has not scaled. It has narrowed the set of people allowed to say what happened. Lending teams watching Glamsterdam have put this in plain language. Ethereum should keep the ability to verify the ledger without asking permission. Scaling that makes independent checks impractical breaks the original bargain.
That is not a nostalgic complaint. It is an operational one. A network whose truth depends on a handful of well-funded validators is easier to pressure, easier to misconfigure in unison, and harder to audit after something weird. Added room is welcome when it does not make validation harder in that deeper sense. The comments from protocol teams have stopped short of cheering every gas increase for that reason. Good. Cheerleading is cheap.
You can feel the tension in the 200 million test itself. The point of running it on a public network is to see whether clients stay in sync, whether propagation holds, whether a home operator still has a chance. If the answer is no, the right response is a lower ceiling or a different design, not a victory lap. I would treat any mainnet number that cannot survive that question as unfinished.
A practical scorecard after activation: Inclusion time for heavy loans, not just swaps Fees paid during volatility, not Sunday averages Share of nodes that can still validate unaided Failed calls traced to stale gas limits Liquidation lag versus external price
Public Tests Carry Their Own Weird Failure Modes
Capacity checks were not the only warning on the road to Glamsterdam. Developers also flagged a builder problem that only really exists because test ether is free. On a public test network, a malicious builder can win a block auction and then withhold the payload. The result is an availability headache, not a theft of real funds. Still, it muddies the rehearsal. You cannot grade liveness if someone is allowed to ghost the block on purpose and pay nothing meaningful for the privilege.
Earlier devnets had already put real client diversity on the table. One rehearsal ran on the order of 84,000 validators across multiple clients. Useful, and also controlled. A controlled run excludes the person who shows up to withhold payloads because the coins are pretend. Public testnets do not have that luxury. The scenario was discussed as a testnet availability issue, not a path to mainnet theft. Worth keeping those buckets separate. Panic travels faster than release notes.
For anyone tracking the asset through listed funds, the backdrop has not been uniformly cheerful either. One mid-September window showed on the order of 140 million dollars in net withdrawals from U.S. spot products over a short stretch, and ether sat at the weak end of the major crypto fund groups that week. Fund flows are not a technical review of a fork. They do change how loudly the market listens. A capacity upgrade landing into indifferent flows will still matter to users. It may not move the headline price by itself.
I mention the flows only as weather. The fork is a plumbing change. Price is a crowd. Mixing them produces bad forecasts and worse articles. What the plumbing can do is change the cost of being early or late inside a lending book. That is enough of a job.
Who Actually Feels A Wider Block
Not every participant should expect the same gift. A retail swapper might notice a slightly calmer fee on a busy evening and little else. A liquidator might notice that the race is less of a lottery. A protocol that lives on multi-step credit might notice that its worst hour is less worst. Those are different products wearing the same chain.
Borrowers sit in the awkward middle. They do not run bots, and they do not live in the mempool, but their health factor does. If the transaction that tops up collateral lands two blocks late, the interface did its job and the outcome is still bad. More predictable access is disproportionately useful for that user, which is why lending teams keep returning to inclusion rather than to peak throughput slides.
Arbitrage traders are the unloved plumbing. When their small trades clear, pools stay tighter and liquidation ranges behave. When they do not, everyone else pays through worse prices and slower defense of the book. I have never loved the aesthetics of bot-filled blocks. I have also never seen a lending market stay honest without them. Capacity that makes marginal arb worth doing is capacity that shows up in someone else’s quote.
Builders and validators feel the other side. Heavier blocks mean more work per slot, more bandwidth, more reasons for a slow machine to fall behind. The upgrade only “helps DeFi” if that side stays manageable. Otherwise the help is a transfer from node operators to applications, and the applications will eventually pay it back in centralization. That trade is the one to refuse.
A Field Guide For The Weeks Around Activation
You do not need a research desk to watch this properly. You need a short list and the discipline not to grade the fork on a quiet chart. Here is the version I would actually use, written like notes rather than a manifesto.
- Time a heavy borrow and a simple swap on the same afternoon, before and after. The ratio matters more than either number alone.
- Watch inclusion during a real move, not during a scheduled announcement.
- Check whether your wallet’s gas estimate still matches reverted-transaction reality.
- If you run a contract with a fixed stipend, replay it. Do not trust the changelog to love you.
- Ask whether a modest machine can still follow the chain without a hosted crutch.
That last item is the one people skip because it does not fit in a fee screenshot. It is also the one that decides whether the chain you are using in two years still resembles the chain you meant to use. Applications can migrate. A verification set that quietly shrinks does not send a push notification.
What Could Still Go Sideways
Room for a downside, because these pieces age badly when they only list gifts. The gas test can pass and mainnet can still choose a lower ceiling. That would not make the rehearsal a failure. It would mean the rehearsal did its job. The opposite mistake, copying 200 million across because the test “felt fine,” is the one that worries me more.
State repricing can also land harder than application teams expect. A lending flow that was comfortable at 1.84 million gas might ask for more after the new schedule, even as the block itself gets larger. Net relief is not guaranteed for every path. Some users will see a wider ferry and a heavier truck at the same time. The truck might still wait.
Then there is demand. Extra capacity invites extra use. History on this chain is not subtle about that. Fees fall, activity rises, fees find a new level. If Glamsterdam is judged six months later on whether a busy hour feels free, it will be judged on the wrong question. The right question is whether the heavy, time-sensitive transaction has a fairer shot than it does today.
Client bugs remain the boring risk that actually ships incidents. A default that flips a gas ceiling, a builder that withholds a payload on a testnet, an estimator that caches the old world. None of these are philosophical. All of them can dominate the first week of headlines if nobody rehearses them. The public test exists so those headlines happen where the coins are fake.
How This Sits Next To The Rest Of The Roadmap
Glamsterdam is not the whole scaling story, and treating it as one produces muddled expectations. Data availability work, layer-two throughput, and execution-layer gas are different levers. A user who lives entirely on a rollup may barely notice a mainnet gas jump, until a withdrawal, a canonical bridge, or a governance action has to touch the base layer while it is busy. Base-layer congestion still leaks upward. It just leaks on a delay.
Lending that settles on mainnet feels the lever directly. So does any pool whose arbitrage still clears there. The economic story of cheaper layer-two blockspace does not retire the need for a base layer that can absorb an ugly hour. If anything, a busy ecosystem above it makes the base hour uglier when everyone refreshes state at once. I would not pit these approaches against each other. I would ask whether the base hour got fairer.
There is also a cultural tell. When application teams talk about validation staying permissionless, they are defending the venue they build on, not performing. A lending protocol can move. It cannot invent a credible settlement layer on a weekend. Their caution about “capacity without harder validation” is self-interest of the useful kind.
Reading The Upgrade Like A Desk, Not A Fan
Fans grade forks on ambition. Desks grade them on whether the position could have been saved. Those are different sports. A 200 million test is ambition. A leveraged borrow that lands while the market is moving is the sport. Curve-style commentary, stripped of the brand gloss, is desk talk. Inclusion, fees under load, liquidations that are not late, state costs that do not silently break callers, validation that a stranger can still perform.
If I had to compress the bet, it would sound like this. More room in the block should make complex DeFi less of a second-class citizen during busy hours, provided the room does not price out independent checkers and provided applications update their gas assumptions. The first half is the hope. The second half is the work. Forks do not do the work for you.
Will every user action get cheaper? No, and anyone saying otherwise skipped the repricing. Will a higher ceiling, by itself, stop stalls? Also no. Demand remains a crowd. The upgrade’s honest promise is narrower, and more interesting. Heavy transactions get a wider door. Whether they walk through it during the hour that matters is the only review worth writing.
Rough ratio from mainnet checks: 1,840,000 / 125,000 ≈ 14.7x gas for a leveraged borrow versus a direct stablecoin swap.Keep that ratio in your head when the next throughput graphic crosses your feed. Fourteen times is not a vibe. It is the difference between an errand and a moving truck. Glamsterdam is an argument about whether the street can take the truck when everyone else has the same idea. I will believe the argument when the truck arrives on a bad day, not when the testnet counter hits a round number.
Until activation dates firm up, the sensible posture is dull on purpose. Replay the calls. Fix the stipends. Watch the defaults your client actually ships. Ignore the victory laps. The chain has a habit of teaching that lesson in production when the homework was optional. This time the homework is printed on the gas schedule, which is about as plain as these things get.
And if you only remember one question from the teams closest to the borrows, make it this. Not “how high did the limit go,” but “what happened to execution when the chain was actually loaded.” That is the whole review. Everything else is scenery.
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