This repository was archived by the owner on May 24, 2022. It is now read-only.
This repository was archived by the owner on May 24, 2022. It is now read-only.
Light client syncs slowly when fether is launched #228
Description
Launching a fresh (as in, not synced before) light client alone, without Fether, it syncs pretty quickly, at around ~x000hdrs/s.
When launching Fether (as it gets connected to the light client), the sync of the light client gets much much slower, around x00hdr/s or less.
Seen on windows (as I was testing Fether) and Linux.
Example:
I launch the node alone, it syncs
parity --chain kovan --no-ancient-blocks --light
2018-11-05 14:37:51 Starting Parity-Ethereum/v2.1.3-beta-18ddd7c-20181015/x86_64-linux-gnu/rustc1.29.0
2018-11-05 14:37:51 Keys path /home/thib/.local/share/io.parity.ethereum/keys/kovan
2018-11-05 14:37:51 DB path /home/thib/.local/share/io.parity.ethereum/chains_light/kovan/db/9bf388941c25ea98
2018-11-05 14:37:51 Running in experimental Light Client mode.
2018-11-05 14:37:52 Inserting hardcoded block #9023489 in chain
2018-11-05 14:37:52 Debug API is not available in light client mode.
2018-11-05 14:37:52 Debug API is not available in light client mode.
2018-11-05 14:37:55 Imported #9024514 0xcb30…559a (2.48 Mgas)
2018-11-05 14:37:57 Syncing #9029377 0xbe47…c4f1 1177.6 hdr/s 0+ 0 Qed 14/50 peers 4 MiB cache 0 bytes queue RPC: 0 conn, 0 req/s, 0 µs
2018-11-05 14:37:57 Public node URL: enode://8c820b97320e978b841fe62fed9a6ac2baca0ff59abe40460d2fba7e062ebe3ec4ad48c815a9656d9b26ba3f593640bb4ac4347fcbf0362637770d724b96d7c2@192.168.1.159:30303
2018-11-05 14:38:02 Syncing #9029377 0xbe47…c4f1 0.0 hdr/s 0+ 0 Qed 16/50 peers 4 MiB cache 0 bytes queue RPC: 0 conn, 0 req/s, 0 µs
2018-11-05 14:38:07 Imported #9029378 0xe4d7…cd4e (0.29 Mgas)
2018-11-05 14:38:12 Syncing #9052026 0x07ce…dd2b 2264.9 hdr/s 0+10879 Qed 14/50 peers 10 MiB cache 8 MiB queue RPC: 0 conn, 0 req/s, 0 µs
2018-11-05 14:38:17 Syncing #9074946 0x2b73…912d 4584.0 hdr/s 0+ 7551 Qed 16/50 peers 10 MiB cache 6 MiB queue RPC: 0 conn, 0 req/s, 0 µs
2018-11-05 14:38:17 Imported #9075202 0x2cd2…ca90 (0.08 Mgas) + another 255 header(s)
2018-11-05 14:38:18 Imported #9080834 0x5360…24cf (0.10 Mgas) + another 255 header(s)
2018-11-05 14:38:21 Imported #9088770 0x4e55…bfca (0.04 Mgas) + another 255 header(s)
2018-11-05 14:38:22 Imported #9092866 0x3a7d…555c (0.26 Mgas) + another 255 header(s)
2018-11-05 14:38:22 Syncing #9093418 0x61dc…fc79 3694.4 hdr/s 0+ 768 Qed 16/50 peers 10 MiB cache 600 KiB queue RPC: 0 conn, 0 req/s, 0 µs
2018-11-05 14:38:24 Imported #9095939 0xd2f0…cc7f (0.37 Mgas)
2018-11-05 14:38:25 Imported #9098499 0x707a…de75 (0.34 Mgas)
2018-11-05 14:38:28 Imported #9110484 0x52da…311a (0.70 Mgas) + another 255 header(s)
2018-11-05 14:38:31 Imported #9121492 0x2338…d0d7 (0.11 Mgas) + another 255 header(s)
2018-11-05 14:38:32 Syncing #9127476 0x911d…7f89 3406.1 hdr/s 0+26415 Qed 18/50 peers 10 MiB cache 20 MiB queue RPC: 1 conn, 2 req/s, 42 µs
2018-11-05 14:38:33 Imported #9130452 0xb3b8…bdb9 (1.41 Mgas) + another 255 header(s)
2018-11-05 14:38:34 Imported #9133524 0x58e2…86e9 (0.02 Mgas) + another 255 header(s)
2018-11-05 14:38:35 Imported #9137876 0x192e…dea3 (0.02 Mgas) + another 255 header(s)
2018-11-05 14:38:37 Syncing #9145230 0xb73e…383a 3550.8 hdr/s 0+15663 Qed 13/50 peers 10 MiB cache 12 MiB queue RPC: 1 conn, 2 req/s, 42 µs
2018-11-05 14:38:37 Imported #9145812 0x1e18…e69b (0.24 Mgas) + another 255 header(s)
2018-11-05 14:38:39 Imported #9153748 0x868f…3a38 (0.05 Mgas) + another 255 header(s)
2018-11-05 14:38:42 Imported #9166548 0xa74b…1355 (1.50 Mgas) + another 255 header(s)
2018-11-05 14:38:42 Syncing #9166579 0xd4e2…b44c 4269.8 hdr/s 0+29907 Qed 18/50 peers 10 MiB cache 23 MiB queue RPC: 1 conn, 2 req/s, 42 µsThen I launch Fether, and the sync rate starts dropping
2018-11-05 14:38:52 Syncing #9204739 0x8697…479a 3817.1 hdr/s 0+ 0 Qed 19/50 peers 10 MiB cache 0 bytes queue RPC: 1 conn, 1 req/s, 41 µs
2018-11-05 14:38:52 Imported #9204740 0xbee2…969b (0.04 Mgas)
2018-11-05 14:38:57 Syncing #9206275 0x5227…3e66 307.2 hdr/s 0+ 0 Qed 15/50 peers 10 MiB cache 0 bytes queue RPC: 1 conn, 2 req/s, 46 µs
2018-11-05 14:39:02 Syncing #9207043 0x6d7c…2fbd 153.6 hdr/s 0+ 0 Qed 12/50 peers 10 MiB cache 0 bytes queue RPC: 1 conn, 1 req/s, 46 µs
2018-11-05 14:39:02 Imported #9207044 0x3824…411f (0.00 Mgas)
2018-11-05 14:39:07 Syncing #9208835 0xba2a…1a06 358.4 hdr/s 0+ 0 Qed 13/50 peers 10 MiB cache 0 bytes queue RPC: 1 conn, 1 req/s, 46 µs
2018-11-05 14:39:09 Imported #9208836 0xb1f7…6f20 (0.04 Mgas)
2018-11-05 14:39:12 Syncing #9210627 0x96c5…eecb 358.4 hdr/s 0+ 0 Qed 15/50 peers 10 MiB cache 0 bytes queue RPC: 1 conn, 1 req/s, 48 µs
2018-11-05 14:39:17 Syncing #9211395 0x4457…4ce1 153.6 hdr/s 0+ 0 Qed 15/50 peers 10 MiB cache 0 bytes queue RPC: 1 conn, 1 req/s, 50 µs
2018-11-05 14:39:20 Imported #9212676 0x6599…36b2 (0.00 Mgas)
2018-11-05 14:39:22 Syncing #9213443 0xace7…2a6d 409.6 hdr/s 0+ 0 Qed 12/50 peers 10 MiB cache 0 bytes queue RPC: 1 conn, 1 req/s, 66 µs
2018-11-05 14:39:24 Imported #9213444 0xc150…6b95 (0.00 Mgas)
2018-11-05 14:39:27 Syncing #9214723 0xc53c…ba70 256.0 hdr/s 0+ 0 Qed 12/50 peers 10 MiB cache 0 bytes queue RPC: 1 conn, 2 req/s, 74 µs
2018-11-05 14:39:28 Imported #9214724 0x9a47…18c8 (0.00 Mgas)
2018-11-05 14:39:32 Syncing #9215747 0x564a…0aa2 204.8 hdr/s 0+ 0 Qed 16/50 peers 10 MiB cache 0 bytes queue RPC: 1 conn, 1 req/s, 86 µs
2018-11-05 14:39:32 Imported #9215748 0xa452…544c (0.00 Mgas)
2018-11-05 14:39:37 Syncing #9216771 0x8211…0788 204.8 hdr/s 0+ 0 Qed 14/50 peers 10 MiB cache 0 bytes queue RPC: 1 conn, 0 req/s, 86 µs
2018-11-05 14:39:37 Imported #9216772 0xe78f…33d0 (1.92 Mgas)
2018-11-05 14:39:43 Imported #9218564 0x9d52…d0cf (0.26 Mgas)
2018-11-05 14:39:47 Syncing #9219588 0xb082…caa5 281.7 hdr/s 0+ 0 Qed 13/50 peers 10 MiB cache 0 bytes queue RPC: 1 conn, 1 req/s, 117 µs
2018-11-05 14:39:52 Syncing #9220612 0x7d52…1011 204.8 hdr/s 0+ 0 Qed 13/50 peers 10 MiB cache 0 bytes queue RPC: 1 conn, 1 req/s, 114 µs
2018-11-05 14:39:53 Imported #9221126 0xb837…f88f (0.45 Mgas) + another 1 header(s)
2018-11-05 14:39:57 Syncing #9222148 0x5db9…ce4a 307.2 hdr/s 0+ 0 Qed 12/50 peers 10 MiB cache 0 bytes queue RPC: 1 conn, 1 req/s, 114 µs
2018-11-05 14:40:02 Syncing #9223940 0x2ac5…b12d 358.4 hdr/s 0+ 0 Qed 14/50 peers 10 MiB cache 0 bytes queue RPC: 1 conn, 1 req/s, 114 µs
If the node is not launched before Fether (and Fether launch it itself) the sync will be very slow from the start. This seems to be due to the RPC Fether is doing everytime there is a new block