bef0577206
fix(simple8b): Fix incorrect encoding for a run of 119 or 239 1s
...
If 120th or 240th value is not a 1, k still passes the check in the
switch, causing the last value to be lost. If this value occurs at
the boundary of a block, the max time will be incorrect, resulting in
compaction failing to make forward progress.
2018-11-14 12:14:45 +00:00
a339f8f620
feat(encoding): Improve integer and simple8b encoding performance
...
simple8b EncodeAll improvements should
```
name old time/op new time/op delta
EncodeAll/1_bit-8 28.5µs ± 1% 28.6µs ± 1% ~ (p=0.133 n=9+10)
EncodeAll/2_bits-8 28.9µs ± 2% 28.7µs ± 0% ~ (p=0.068 n=10+8)
EncodeAll/3_bits-8 29.3µs ± 1% 28.8µs ± 0% -1.70% (p=0.000 n=10+10)
EncodeAll/4_bits-8 29.6µs ± 1% 29.1µs ± 1% -1.85% (p=0.000 n=10+10)
EncodeAll/5_bits-8 30.6µs ± 1% 29.8µs ± 2% -2.70% (p=0.000 n=10+10)
EncodeAll/6_bits-8 31.3µs ± 1% 30.0µs ± 1% -4.08% (p=0.000 n=9+9)
EncodeAll/7_bits-8 32.6µs ± 1% 30.8µs ± 0% -5.49% (p=0.000 n=9+9)
EncodeAll/8_bits-8 33.6µs ± 2% 31.0µs ± 1% -7.77% (p=0.000 n=10+9)
EncodeAll/10_bits-8 34.9µs ± 0% 31.9µs ± 2% -8.55% (p=0.000 n=9+10)
EncodeAll/12_bits-8 36.8µs ± 1% 32.6µs ± 1% -11.35% (p=0.000 n=9+10)
EncodeAll/15_bits-8 39.8µs ± 1% 34.1µs ± 2% -14.40% (p=0.000 n=10+10)
EncodeAll/20_bits-8 45.2µs ± 3% 36.2µs ± 1% -19.97% (p=0.000 n=10+9)
EncodeAll/30_bits-8 55.0µs ± 0% 40.9µs ± 1% -25.62% (p=0.000 n=9+9)
EncodeAll/60_bits-8 86.2µs ± 1% 55.2µs ± 1% -35.92% (p=0.000 n=10+10)
EncodeAll/combination-8 582µs ± 2% 502µs ± 1% -13.80% (p=0.000 n=9+9)
```
EncodeIntegers:
```
name old time/op new time/op delta
EncodeIntegers/1000_seq/batch-8 2.04µs ± 0% 1.50µs ± 1% -26.22% (p=0.008 n=5+5)
EncodeIntegers/1000_ran/batch-8 8.80µs ± 2% 6.10µs ± 0% -30.73% (p=0.008 n=5+5)
EncodeIntegers/1000_dup/batch-8 2.03µs ± 1% 1.50µs ± 1% -26.04% (p=0.008 n=5+5)
```
EncodeTimestamps (ran is improved due to simple8b improvements)
```
name old time/op new time/op delta
EncodeTimestamps/1000_seq/batch-8 2.64µs ± 1% 2.65µs ± 2% ~ (p=0.310 n=5+5)
EncodeTimestamps/1000_ran/batch-8 64.0µs ± 1% 33.8µs ± 1% -47.23% (p=0.008 n=5+5)
EncodeTimestamps/1000_dup/batch-8 9.32µs ± 0% 9.28µs ± 1% ~ (p=0.087 n=5+5)
```
2018-11-01 18:59:20 +00:00
dd83bd230f
chore(simple8b): Add more unit tests and benchmarks
2018-11-01 18:59:20 +00:00
90494a5309
chore(fmt): fix and simplify go formatting
2018-10-08 17:23:54 -05:00
ea02772fc5
Pull in more pkg packages
2018-10-01 12:08:37 +01:00
Stuart Carnie
Chris Goller
Edd Robinson