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Add benchmark that measures cost of repeatedly opening the database.

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commit 77948e7eec0613fb5cbecb7e320b9498607030b5 1 parent 34ad72e
Sanjay Ghemawat authored cmumford committed
Showing with 14 additions and 1 deletion.
  1. +14 −1 db/db_bench.cc
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15 db/db_bench.cc
@@ -33,6 +33,7 @@
// readmissing -- read N missing keys in random order
// readhot -- read N times in random order from 1% section of DB
// seekrandom -- N random seeks
+// open -- cost of opening a DB
// crc32c -- repeated crc32c of 4K of data
// acquireload -- load N*1000 times
// Meta operations:
@@ -442,7 +443,11 @@ class Benchmark {
bool fresh_db = false;
int num_threads = FLAGS_threads;
- if (name == Slice("fillseq")) {
+ if (name == Slice("open")) {
+ method = &Benchmark::OpenBench;
+ num_ /= 10000;
+ if (num_ < 1) num_ = 1;
+ } else if (name == Slice("fillseq")) {
fresh_db = true;
method = &Benchmark::WriteSeq;
} else if (name == Slice("fillbatch")) {
@@ -702,6 +707,14 @@ class Benchmark {
}
}
+ void OpenBench(ThreadState* thread) {
+ for (int i = 0; i < num_; i++) {
+ delete db_;
+ Open();
+ thread->stats.FinishedSingleOp();
+ }
+ }
+
void WriteSeq(ThreadState* thread) {
DoWrite(thread, true);
}
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