Add the git hash and full RocksDB version to report.tsv (facebook#10277)

Summary:
Previously the version was displayed as $major.$minor
This changes it to $major.$minor.$path

This also adds the git hash for the time from which RocksDB was built to the end of report.tsv. I confirmed that benchmark_log_tool.py still parses it and that the people
who consume/graph these results are OK with it.

Example output:
ops_sec	mb_sec	lsm_sz	blob_sz	c_wgb	w_amp	c_mbps	c_wsecs	c_csecs	b_rgb	b_wgb	usec_op	p50	p99	p99.9	p99.99	pmax	uptime	stall%	Nstall	u_cpu	s_cpu	rss	test	date	version	job_id	githash
609488	244.1	1GB	0.0GB,	1.4	0.7	93.3	39	38	0	0	1.6	1.0	4	15	26	5365	15	0.0	0	0.1	0.0	0.5	fillseq.wal_disabled.v400	2022-06-29T13:36:05	7.5.0		6115254

Pull Request resolved: facebook#10277

Test Plan: Run it

Reviewed By: jay-zhuang

Differential Revision: D37532418

Pulled By: mdcallag

fbshipit-source-id: 55e472640d51265819b228d3373c9fa9b62b660d

tools/benchmark.sh

@@ -390,7 +390,7 @@ params_univ_compact="$const_params \
                 --level0_slowdown_writes_trigger=16 \
                 --level0_stop_writes_trigger=20"
 
-tsv_header="ops_sec\tmb_sec\tlsm_sz\tblob_sz\tc_wgb\tw_amp\tc_mbps\tc_wsecs\tc_csecs\tb_rgb\tb_wgb\tusec_op\tp50\tp99\tp99.9\tp99.99\tpmax\tuptime\tstall%\tNstall\tu_cpu\ts_cpu\trss\ttest\tdate\tversion\tjob_id"
+tsv_header="ops_sec\tmb_sec\tlsm_sz\tblob_sz\tc_wgb\tw_amp\tc_mbps\tc_wsecs\tc_csecs\tb_rgb\tb_wgb\tusec_op\tp50\tp99\tp99.9\tp99.99\tpmax\tuptime\tstall%\tNstall\tu_cpu\ts_cpu\trss\ttest\tdate\tversion\tjob_id\tgithash"
 
 function get_cmd() {
   output=$1
@@ -493,11 +493,15 @@ function summarize_result {
   test_name=$2
   bench_name=$3
 
+  # In recent versions these can be found directly via db_bench --version, --build_info but
+  # grepping from the log lets this work on older versions.
+  version="$( grep "RocksDB version:" "$DB_DIR"/LOG | head -1 | awk '{ printf "%s", $5 }' )"
+  git_hash="$( grep "Git sha" "$DB_DIR"/LOG | head -1 | awk '{ printf "%s", substr($5, 1, 10) }' )"
+
   # Note that this function assumes that the benchmark executes long enough so
   # that "Compaction Stats" is written to stdout at least once. If it won't
   # happen then empty output from grep when searching for "Sum" will cause
   # syntax errors.
-  version=$( grep ^RocksDB: $test_out | awk '{ print $3 }' )
   date=$( grep ^Date: $test_out | awk '{ print $6 "-" $3 "-" $4 "T" $5 }' )
   my_date=$( month_to_num $date )
   uptime=$( grep ^Uptime\(secs $test_out | tail -1 | awk '{ printf "%.0f", $2 }' )
@@ -595,10 +599,11 @@ function summarize_result {
     echo -e "# date - Date/time of test" >> $report
     echo -e "# version - RocksDB version" >> $report
     echo -e "# job_id - User-provided job ID" >> $report
+    echo -e "# githash - git hash at which db_bench was compiled"
     echo -e $tsv_header >> $report
   fi
 
-  echo -e "$ops_sec\t$mb_sec\t$lsm_size\t$blob_size\t$sum_wgb\t$wamp\t$cmb_ps\t$c_wsecs\t$c_csecs\t$b_rgb\t$b_wgb\t$usecs_op\t$p50\t$p99\t$p999\t$p9999\t$pmax\t$uptime\t$stall_pct\t$nstall\t$u_cpu\t$s_cpu\t$rss\t$test_name\t$my_date\t$version\t$job_id" \
+  echo -e "$ops_sec\t$mb_sec\t$lsm_size\t$blob_size\t$sum_wgb\t$wamp\t$cmb_ps\t$c_wsecs\t$c_csecs\t$b_rgb\t$b_wgb\t$usecs_op\t$p50\t$p99\t$p999\t$p9999\t$pmax\t$uptime\t$stall_pct\t$nstall\t$u_cpu\t$s_cpu\t$rss\t$test_name\t$my_date\t$version\t$job_id\t$git_hash" \
     >> $report
 }