bump rocksdb to v7.7.3

[zhangsoledad]

No description provided.

[zhangsoledad]

Fixes Compaction pending bytes calculation amplification issue that caused write stall, as discussed in: facebook/rocksdb#9423

[zhangsoledad]

Added a benchmark on transaction read uncommitted key and compared several versions

7.3.1
transaction/transaction Get/10000
time: [39.205 ms 39.358 ms 39.551 ms]
change: [-1.8864% -1.3310% -0.7882%] (p = 0.00 < 0.05)

---

7.5.3
transaction/transaction Get/10000
time: [38.957 ms 39.072 ms 39.193 ms]
change: [-0.0799% +0.3521% +0.7801%] (p = 0.12 > 0.05)

transaction/transaction GetPinned/10000
time: [38.426 ms 38.550 ms 38.677 ms]
change: [+0.0409% +0.5335% +0.9862%] (p = 0.02 < 0.05)

---

7.7.3

transaction/transaction Get/10000
time: [38.937 ms 39.040 ms 39.145 ms]
change: [-0.1309% +0.2760% +0.6731%] (p = 0.19 > 0.05)
No change in performance detected.

transaction/transaction GetPinned/10000
time: [38.266 ms 38.373 ms 38.493 ms]
change: [-1.1004% -0.4852% +0.0421%] (p = 0.10 > 0.05)
No change in performance detected.

transaction get_pinned has some improvement in scenarios with larger values

[zhangsoledad]

Also compared with rocksdb's built-in bench_tool

./db_bench --benchmarks="fillseq,overwrite,fill100K,readrandom,deleterandom,readwhilewriting,readrandomwriterandom,seekrandom,seekrandomwhilewriting,newiterator,randomtransaction,fillseekseq"

7.3.1

fillseq      :       1.905 micros/op 524969 ops/sec 1.905 seconds 1000000 operations;   58.1 MB/s
overwrite    :       3.144 micros/op 318045 ops/sec 3.144 seconds 1000000 operations;   35.2 MB/s

fill100K     :     462.245 micros/op 2163 ops/sec 462.245 seconds 1000000 operations;  206.3 MB/s (1000 ops)
readrandom   :       0.483 micros/op 2072195 ops/sec 0.483 seconds 1000000 operations;  202.4 MB/s (1024 of 1000000 found)

deleterandom :       3.151 micros/op 317385 ops/sec 3.151 seconds 1000000 operations;
readwhilewriting :       1.763 micros/op 567089 ops/sec 1.763 seconds 1000000 operations;   26.8 MB/s (185526 of 1000000 found)

readrandomwriterandom :       5.732 micros/op 174448 ops/sec 5.732 seconds 1000000 operations; ( reads:900000 writes:100000 total:1000000 found:384754)
seekrandom   :       7.795 micros/op 128289 ops/sec 7.795 seconds 1000000 operations; (455638 of 1000000 found)

seekrandomwhilewriting :      15.864 micros/op 63037 ops/sec 15.864 seconds 1000000 operations; (838183 of 1000000 found)
newiterator  :       0.988 micros/op 1012307 ops/sec 0.988 seconds 1000000 operations;

randomtransaction :      18.218 micros/op 54892 ops/sec 18.218 seconds 1000000 operations;    1.3 MB/s ( batches:1000000 )
fillseekseq  :       3.553 micros/op 281449 ops/sec 7.106 seconds 2000000 operations;

7.7.3

fillseq      :       1.967 micros/op 508267 ops/sec 1.967 seconds 1000000 operations;   56.2 MB/s
overwrite    :       3.206 micros/op 311940 ops/sec 3.206 seconds 1000000 operations;   34.5 MB/s

fill100K     :     461.919 micros/op 2164 ops/sec 461.919 seconds 1000000 operations;  206.5 MB/s (1000 ops)
readrandom   :       0.505 micros/op 1981002 ops/sec 0.505 seconds 1000000 operations;  193.5 MB/s (1024 of 1000000 found)

deleterandom :       2.975 micros/op 336164 ops/sec 2.975 seconds 1000000 operations;
readwhilewriting :       1.361 micros/op 734806 ops/sec 1.361 seconds 1000000 operations;   34.7 MB/s (166016 of 1000000 found)

readrandomwriterandom :       4.577 micros/op 218482 ops/sec 4.577 seconds 1000000 operations; ( reads:900000 writes:100000 total:1000000 found:319268)
seekrandom   :       7.364 micros/op 135788 ops/sec 7.364 seconds 1000000 operations; (387709 of 1000000 found)

seekrandomwhilewriting :      15.719 micros/op 63618 ops/sec 15.719 seconds 1000000 operations; (816989 of 1000000 found)
newiterator  :       1.154 micros/op 866509 ops/sec 1.154 seconds 1000000 operations;

randomtransaction :      18.806 micros/op 53173 ops/sec 18.806 seconds 1000000 operations;    1.2 MB/s ( batches:1000000 )
fillseekseq  :       3.498 micros/op 285866 ops/sec 6.996 seconds 2000000 operations;

Little difference, with an improvement in concurrent scenarios