stake-pool: Reduce maximum pool size (#2654)

* stake-pool: Reduce huge pool size in tests

* stake-pool: Reduce supported maximum size

docs/src/stake-pool/quickstart.md

@@ -99,7 +99,7 @@ to create a new stake pool, and include:
 * withdrawal fee, expressed as two different flags, numerator and denominator
 * deposit fee, expressed as two different flags, numerator and denominator
 * referral fee, expressed as a number between 0 and 100, inclusive
-* maximum number of validators (highest possible is 3,950 currently)
+* maximum number of validators (highest possible is 3,825 currently)
 * (Optional) deposit authority, for restricted pools
 
 Although fees may seem uninteresting or scammy at this point, consider the costs
@@ -111,12 +111,12 @@ to worry about being locked in to any choices.
 
 Modify the parameters to suit your needs.  In our example, we will use fees
 of 0.3%, a referral fee of 50%, opt to *not* set a deposit authority, and have
-the maximum number of validators (3,950).  Next, run the script:
+the maximum number of validators (3,825).  Next, run the script:
 
 ```bash
 $ ./setup-stake-pool.sh
 Creating pool
-+ spl-stake-pool create-pool --epoch-fee-numerator 3 --epoch-fee-denominator 1000 --withdrawal-fee-numerator 3 --withdrawal-fee-denominator 1000 --deposit-fee-numerator 3 --deposit-fee-denominator 1000 --referral-fee 50 --max-validators 3950 --pool-keypair keys/stake-pool.json --validator-list-keypair keys/validator-list.json --mint-keypair keys/mint.json --reserve-keypair keys/reserve.json
++ spl-stake-pool create-pool --epoch-fee-numerator 3 --epoch-fee-denominator 1000 --withdrawal-fee-numerator 3 --withdrawal-fee-denominator 1000 --deposit-fee-numerator 3 --deposit-fee-denominator 1000 --referral-fee 50 --max-validators 3825 --pool-keypair keys/stake-pool.json --validator-list-keypair keys/validator-list.json --mint-keypair keys/mint.json --reserve-keypair keys/reserve.json
 Creating reserve stake 4tvTkLB4X7ahUYZ2NaTohkG3mud4UBBvu9ZEGD4Wk9mt
 Creating mint BoNneHKDrX9BHjjvSpPfnQyRjsnc9WFH71v8wrgCd7LB
 Creating associated token account DgyZrAq88bnG1TNRxpgDQzWXpzEurCvfY2ukKFWBvADQ to receive stake pool tokens of mint BoNneHKDrX9BHjjvSpPfnQyRjsnc9WFH71v8wrgCd7LB, owned by 4SnSuUtJGKvk2GYpBwmEsWG53zTurVM8yXGsoiZQyMJn

stake-pool/cli/scripts/setup-stake-pool.sh

@@ -25,7 +25,7 @@ command_args+=( --deposit-fee-denominator 0 )
 
 command_args+=( --referral-fee 0 ) # Percentage of deposit fee that goes towards the referrer (a number between 0 and 100, inclusive)
 
-command_args+=( --max-validators 3950 ) # Maximum number of validators in the stake pool, 3950 is the current maximum possible
+command_args+=( --max-validators 3825 ) # Maximum number of validators in the stake pool, 3825 is the current maximum possible
 
 # (Optional) Deposit authority, required to sign all deposits into the pool.
 # Setting this variable makes the pool "private" or "restricted".

stake-pool/program/tests/huge_pool.rs

@@ -30,7 +30,7 @@ use {
     spl_token::state::{Account as SplAccount, AccountState as SplAccountState, Mint},
 };
 
-const HUGE_POOL_SIZE: u32 = 3_950;
+const HUGE_POOL_SIZE: u32 = 3_825;
 const ACCOUNT_RENT_EXEMPTION: u64 = 1_000_000_000; // go with something big to be safe
 const STAKE_AMOUNT: u64 = 200_000_000_000;
 const STAKE_ACCOUNT_RENT_EXEMPTION: u64 = 2_282_880;

stake-pool/py/stake_pool/actions.py

@@ -45,7 +45,7 @@ async def create(client: AsyncClient, manager: Keypair,
             )
         )
     )
-    max_validators = 3950  # current supported max by the program, go big!
+    max_validators = 3825  # current supported max by the program, go big!
     validator_list_size = ValidatorList.calculate_validator_list_size(max_validators)
     resp = await client.get_minimum_balance_for_rent_exemption(validator_list_size)
     validator_list_balance = resp['result']