Commit Graph

9 Commits

Author SHA1 Message Date
gary rong
b9bac1f384 les: fix and slim the unit tests of les (#20247)
* les: loose restriction of unit tests

* les: update unit tests

* les, light: slim the unit tests
2019-11-06 22:09:37 +01:00
gary rong
2ed729d38e les: handler separation (#19639)
les: handler separation
2019-08-21 11:29:34 +02:00
Felföldi Zsolt
c2003ed63b les, les/flowcontrol: improved request serving and flow control (#18230)
This change

- implements concurrent LES request serving even for a single peer.
- replaces the request cost estimation method with a cost table based on
  benchmarks which gives much more consistent results. Until now the
  allowed number of light peers was just a guess which probably contributed
  a lot to the fluctuating quality of available service. Everything related
  to request cost is implemented in a single object, the 'cost tracker'. It
  uses a fixed cost table with a global 'correction factor'. Benchmark code
  is included and can be run at any time to adapt costs to low-level
  implementation changes.
- reimplements flowcontrol.ClientManager in a cleaner and more efficient
  way, with added capabilities: There is now control over bandwidth, which
  allows using the flow control parameters for client prioritization.
  Target utilization over 100 percent is now supported to model concurrent
  request processing. Total serving bandwidth is reduced during block
  processing to prevent database contention.
- implements an RPC API for the LES servers allowing server operators to
  assign priority bandwidth to certain clients and change prioritized
  status even while the client is connected. The new API is meant for
  cases where server operators charge for LES using an off-protocol mechanism.
- adds a unit test for the new client manager.
- adds an end-to-end test using the network simulator that tests bandwidth
  control functions through the new API.
2019-02-26 12:32:48 +01:00
gary rong
c5d34fc94e les, light: reduce les testing stress (#17867) 2018-10-08 16:52:23 +03:00
GagziW
7c02933275 les: changed if-else blocks to conform with golint (#16658) 2018-05-03 11:35:06 +03:00
ferhat elmas
9619a61024 all: gofmt -w -s (#15419) 2017-11-08 11:45:52 +01:00
Felföldi Zsolt
a5d08c893d les: code refactoring (#14416)
This commit does various code refactorings:

- generalizes and moves the request retrieval/timeout/resend logic out of LesOdr
  (will be used by a subsequent PR)
- reworks the peer management logic so that all services can register with
  peerSet to get notified about added/dropped peers (also gets rid of the ugly
  getAllPeers callback in requestDistributor)
- moves peerSet, LesOdr, requestDistributor and retrieveManager initialization
  out of ProtocolManager because I believe they do not really belong there and the
  whole init process was ugly and ad-hoc
2017-06-21 12:27:38 +02:00
Felix Lange
0cc492f815 all: update license information 2017-04-14 10:29:00 +02:00
Felföldi Zsolt
525116dbff les: implement request distributor, fix blocking issues (#3660)
* les: implement request distributor, fix blocking issues
* core: moved header validation before chain mutex lock
2017-03-22 20:44:22 +01:00