Felföldi Zsolt zsfelfoldi
zsfelfoldi
/ les status collaboration notes
Created
November 28, 2017 17:21
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| I've collected some points to be addressed at the nov.27. LES collaboration kickoff meeting: | |
| - approximately how much time can you contribute to LES-related tasks in the foreseeable future? | |
| - preferred communication channels and methods? | |
| - gitter channel | |
| - github issue tracking | |
| - two standup calls per week | |
| - regularly scheduled discussion calls for individual tasks | |
| - choose a suitable service for voice calls and screen sharing | |
| - questions about individual tasks, who is interested in which one (not necessarily committing to them during the first chat, just discussing) |
zsfelfoldi
/ ulc.txt
Last active
February 19, 2018 10:09
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| Here are some pointers to implementing the ULC mode. Just take a look at the relevant code, then feel free to ping me whenever you have questions (I guess it will happen a few times, I tried to document the most important parts but some of the code is still a bit messy, which I apologize for in advance). | |
| - adding the ultra light client option: | |
| Add an extra option for light client mode where the user can specify a text/json ULC config file that contains a list of trusted server enodes and N out of M parameters (which may depend on how many servers we are connected to, there may be 5 servers listed but we can still accept 2 out of 3 connected). | |
| Geth parameters are implemented like this: | |
| https://github.com/ethereum/go-ethereum/blob/master/cmd/utils/flags.go#L162 | |
| Search for LightModeFlag or LightServFlag to find out how it is wired through the code. | |
| - requesting signed headers |
zsfelfoldi
/ gist:beba6951f7bacdc9f0114e3f65d8987b
Created
May 22, 2017 14:49
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| 0xa0b325beb7cd53c031bf0ec17532ce1ffa363366 |
zsfelfoldi
/ filter_bench
Created
April 27, 2017 08:34
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| Running benchmark without bloombits | |
| Clearing bloombits data... | |
| Cleared bloombits data | |
| Running filter benchmarks... | |
| Finished running filter benchmarks | |
| 1m2.479473502s total 17.342566172s per million blocks | |
| BenchmarkNoBloomBits-4 1 67490450777 ns/op | |
| Running bloombits benchmark section size: 512 compression method: 0 |
zsfelfoldi
/ prof_new
Created
April 10, 2016 17:37
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| Benchmarking 100000 consecutive header reads from an existing "new style" database (found at DefaultDataDir/_new): | |
| (note that the database being cached into memory either by leveldb or by the OS affects this test dramatically; this test has been carried out after a fresh system restart) | |
| fefe@Fefe-ThinkPad-SL500:~/go-ethereum$ godep go test -v ./core -bench BenchmarkReadChain_new_header_100k -run XXX -cpuprofile new.prof | |
| PASS | |
| BenchmarkReadChain_new_header_100k-2 1 6754975060 ns/op | |
| ok _/home/fefe/go-ethereum/core 7.218s | |
| CPU profile top 100 nodes (both flat and cumulative are listed): |
zsfelfoldi
/ prof_old
Created
April 10, 2016 17:36
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| Benchmarking 100000 consecutive header reads from an existing "old style" database (found at DefaultDataDir/_old): | |
| (note that the database being cached into memory either by leveldb or by the OS affects this test dramatically; this test has been carried out after a fresh system restart) | |
| fefe@Fefe-ThinkPad-SL500:~/go-ethereum$ godep go test -v ./core -bench BenchmarkReadChain_old_header_100k -run XXX -cpuprofile old.prof | |
| PASS | |
| BenchmarkReadChain_old_header_100k-2 1 539808334396 ns/op | |
| ok _/home/fefe/go-ethereum/core 540.260s | |
| CPU profile top 100 nodes (both flat and cumulative are listed): |
zsfelfoldi
/ new_db_benchmark
Created
April 7, 2016 11:50
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| BenchmarkInsertChain_empty_memdb 5000 371519 ns/op 43341 B/op 603 allocs/op | |
| BenchmarkInsertChain_empty_diskdb 3000 732071 ns/op 56835 B/op 683 allocs/op | |
| BenchmarkInsertChain_valueTx_memdb 2000 669609 ns/op 82256 B/op 1284 allocs/op | |
| BenchmarkInsertChain_valueTx_diskdb 2000 1137578 ns/op 98221 B/op 1361 allocs/op | |
| BenchmarkInsertChain_valueTx_100kB_memdb 500 2586936 ns/op 933950 B/op 1280 allocs/op | |
| BenchmarkInsertChain_valueTx_100kB_diskdb 100 11507311 ns/op 1854512 B/op 1385 allocs/op | |
| BenchmarkInsertChain_uncles_memdb 2000 802834 ns/op 81055 B/op 1154 allocs/op | |
| BenchmarkInsertChain_uncles_diskdb 2000 1443088 ns/op 95069 B/op 1231 allocs/op | |
| BenchmarkInsertChain_ring200_memdb 5 286776384 ns/op 29705977 B/op 407193 allocs/op | |
| BenchmarkInsertChain_ring200_diskdb 10 250175954 ns/op 30438291 B/op 412880 allocs/op |
zsfelfoldi
/ new_db_scheme
Created
April 5, 2016 22:51
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| How to benchmark my proposed changes for block data db storage: | |
| - export your chain data (preferably to a physical drive different from the one you put the chain db on) | |
| - download my branch: | |
| https://github.com/zsfelfoldi/go-ethereum/tree/chaindb | |
| - set useNewDb in core/database_util.go to false | |
| - compile | |
| - import chain data (specify a new datadir) | |
| - run "geth headerbenchmark" with the same datadir | |
| - set useNewDb in core/database_util.go to true and repeat the last three steps |
zsfelfoldi
/ db_test_new
Created
April 5, 2016 22:41
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| imported 965000 blocks in 4h18m58s | |
| fetched 10000 headers in 1.8s | |
| fetched 965000 headers in 57s | |
| fefe@Fefe-ThinkPad-SL500:~/go-ethereum$ ./geth --datadir "~/.333" import "/media/fefe/My Book/blockchain" | |
| I0405 16:04:40.803209 ethdb/database.go:82] Alloted 128MB cache and 1024 file handles to /home/fefe/.333/chaindata | |
| I0405 16:04:41.456626 core/headerchain.go:93] WARNING: Wrote default ethereum genesis block | |
| I0405 16:04:41.456945 core/blockchain.go:206] Last header: #0 [d4e56740…] TD=17179869184 | |
| I0405 16:04:41.456993 core/blockchain.go:207] Last block: #0 [d4e56740…] TD=17179869184 | |
| I0405 16:04:41.457017 core/blockchain.go:208] Fast block: #0 [d4e56740…] TD=17179869184 |
zsfelfoldi
/ db_test_original
Created
April 5, 2016 22:40
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| imported 965000 blocks in 7h7m22s | |
| fetched 10000 headers in 2m14s | |
| fetched 965000 headers in 4m31s | |
| fefe@Fefe-ThinkPad-SL500:~/go-ethereum$ ./geth --datadir "~/.222" import "/media/fefe/My Book/blockchain" | |
| I0405 04:05:20.301262 ethdb/database.go:88] Alloted 128MB cache and 1024 file handles to /home/fefe/.222/chaindata | |
| I0405 04:05:20.934751 core/headerchain.go:93] WARNING: Wrote default ethereum genesis block | |
| I0405 04:05:20.935057 core/blockchain.go:206] Last header: #0 [d4e56740…] TD=17179869184 | |
| I0405 04:05:20.935105 core/blockchain.go:207] Last block: #0 [d4e56740…] TD=17179869184 | |
| I0405 04:05:20.935129 core/blockchain.go:208] Fast block: #0 [d4e56740…] TD=17179869184 |