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The next patch causes us to access the store while loading (we read channel_updates for local peers), which messes up loading due to the lseek involved. Using pread() is atomic with seek & read, and also a bit more efficient. Make the header contiguous too, while we're here. We don't need pwrite: we always open with O_APPEND which means the seek-to-end is implicit. MCP results from 5 runs, min-max(mean +/- stddev): store_load_msec:36771-38289(37529.6+/-5.3e+02) vsz_kb:1202316 store_rewrite_sec:12.460000-13.280000(12.784+/-0.29) listnodes_sec:1.240000-1.410000(1.34+/-0.058) listchannels_sec:29.850000-31.840000(30.908+/-0.69) routing_sec:27.800000-31.790000(28.822+/-1.5) peer_write_all_sec:66.200000-68.720000(67.44+/-0.84) MCP notable changes from previous patch (>1 stddev): -store_load_msec:39207-45089(41374.6+/-2.2e+03) +store_load_msec:36771-38289(37529.6+/-5.3e+02) -store_rewrite_sec:15.090000-16.790000(15.654+/-0.63) +store_rewrite_sec:12.460000-13.280000(12.784+/-0.29) -peer_write_all_sec:66.830000-76.850000(71.976+/-3.6) +peer_write_all_sec:66.200000-68.720000(67.44+/-0.84) Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> |
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| .. | ||
| test | ||
| broadcast.c | ||
| broadcast.h | ||
| gossip_constants.h | ||
| gossip_peerd_wire.csv | ||
| gossip_store.c | ||
| gossip_store.csv | ||
| gossip_store.h | ||
| gossip_wire.csv | ||
| gossipd.c | ||
| Makefile | ||
| routing.c | ||
| routing.h | ||