Bytes past Packet.meta.size are not valid to read from.
The commit makes the buffer field private and instead provides two
methods:
* Packet::data() which returns an immutable reference to the underlying
buffer up to Packet.meta.size. The rest of the buffer is not valid to
read from.
* Packet::buffer_mut() which returns a mutable reference to the entirety
of the underlying buffer to write into. The caller is responsible to
update Packet.meta.size after writing to the buffer.
Upcoming changes to PacketBatch to support variable sized packets will
modify the internals of PacketBatch. So, this change removes usage of
the internal packet struct and instead uses accessors (which are
currently just wrappers of Vector functions but will change down the
road).
* - get prioritization fee from compute_budget instruction;
- update compute_budget::process_instruction function to take instruction iter to support sanitized versioned message;
- updated runtime.md
* update transaction fee calculation for prioritization fee rate as lamports per 10K CUs
* review changes
* fix test
* fix a bpf test
* fix bpf test
* patch feedback
* fix clippy
* fix bpf test
* feedback
* rename prioritization fee rate to compute unit price
* feedback
Co-authored-by: Justin Starry <justin@solana.com>
Benchmarks show roughly a 6% improvement. The impact could be more
significant when transactions need to be retried a lot.
after patch:
{'name': 'banking_bench_total', 'median': '72767.43'}
{'name': 'banking_bench_tx_total', 'median': '80240.38'}
{'name': 'banking_bench_success_tx_total', 'median': '72767.43'}
test bench_banking_stage_multi_accounts
... bench: 6,137,264 ns/iter (+/- 1,364,111)
test bench_banking_stage_multi_programs
... bench: 10,086,435 ns/iter (+/- 2,921,440)
before patch:
{'name': 'banking_bench_total', 'median': '68572.26'}
{'name': 'banking_bench_tx_total', 'median': '75704.75'}
{'name': 'banking_bench_success_tx_total', 'median': '68572.26'}
test bench_banking_stage_multi_accounts
... bench: 6,521,007 ns/iter (+/- 1,926,741)
test bench_banking_stage_multi_programs
... bench: 10,526,433 ns/iter (+/- 2,736,530)
Tao Zhu
behzad nouri
Justin Starry
steviez
carllin
Christian Kamm
Tao Zhu