* Initialize fork graph in program cache during bank_forks creation
* rename BankForks::new to BankForks::new_rw_arc
* fix compilation
* no need to set fork_graph on insert()
* fix partition tests
The commit implements lazy eviction for turbine QUIC connections.
The cache is allowed to grow to 2 x capacity at which point at least
half of the entries with lowest stake are evicted, resulting in an
amortized O(1) performance.
Currently each outgoing shred will attempt to establish a connection if
one does not already exist. This is very wasteful and consumes many
tokio tasks if the remote node is down or unresponsive.
The commit decouples routing packets from establishing connections by
adding a buffering channel for each remote address. Outgoing packets are
always sent down this channel to be processed once the connection is
established. If connecting attempt fails, all packets already pushed to
the channel are dropped at once, reducing the number of attempts to make
a connection if the remote node is down or unresponsive.
Frequently accessed remote addresses are cached, making a shared-lock
sufficient which would reduce lock contention for the more common
cache-hit lookups.
* separates out turbine QUIC from TPU implementation
Turbine being tied to QUIC implementation for TPU hinders development
and makes it hard to optimize QUIC specifically for turbine.
The commit separates out turbine QUIC from TPU implementation.
* Update core/src/validator.rs
Co-authored-by: Jon Cinque <me@jonc.dev>
* Update turbine/src/retransmit_stage.rs
Co-authored-by: Jon Cinque <me@jonc.dev>
---------
Co-authored-by: Jon Cinque <me@jonc.dev>
Pankaj Garg
behzad nouri