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Introduce hard cap to latency sampling & apply clang format

This commit is contained in:
Junhyun Shim 2022-04-26 11:19:12 +02:00
parent 81211989f1
commit 2f9506f5cd
1 changed files with 9 additions and 2 deletions
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11
bindings/c/test/mako/stats.hpp
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@ -32,9 +32,15 @@
namespace mako {
/* rough cap on the number of samples to avoid OOM hindering benchmark */
constexpr const size_t SAMPLE_CAP = 2000000;
/* size of each block to get detailed latency for each operation */
constexpr const size_t LAT_BLOCK_SIZE = 4093;
/* hard cap on the number of sample blocks = 488 */
constexpr const size_t MAX_LAT_BLOCKS = SAMPLE_CAP / LAT_BLOCK_SIZE;
/* memory block allocated to each operation when collecting detailed latency */
class LatencySampleBlock {
uint64_t samples[LAT_BLOCK_SIZE]{
@ -56,7 +62,7 @@ public:
/* collect sampled latencies until OOM is hit */
class LatencySampleBin {
std::list<LatencySampleBlock> blocks;
bool noMoreAlloc{false};
bool noMoreAlloc{ false };
bool tryAlloc() {
try {
@ -76,7 +82,8 @@ public:
void put(timediff_t td) {
if (blocks.empty() || blocks.back().full()) {
if (noMoreAlloc || !tryAlloc()) return;
if (blocks.size() >= MAX_LAT_BLOCKS || noMoreAlloc || !tryAlloc())
return;
}
blocks.back().put(td);
}