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[Perf] (Server): time records only when the per-frame statistics are on

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swung0x48
2026-10-04 06:02:44 -04:00
parent 963f4d8177
commit 915882b293
1 changed files with 14 additions and 7 deletions
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MobileGL/MG_Remote/Server/ServerLoop.cpp
+14 -7
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@@ -1085,6 +1085,7 @@ namespace MobileGL::MG_Remote::Server {
static std::uint64_t sFrameRecords = 0;
static std::uint64_t sFrameIndex = 0;
Uint64 applied = 0;
const bool timed = ServerFrameStatsEnabled();
for (;;) {
if (SessionLatched()) break;
if (m_windowRequests.load(std::memory_order_acquire) != 0) {
@@ -1093,15 +1094,21 @@ namespace MobileGL::MG_Remote::Server {
}
bool corrupt = false;
const bool popped = consumer.ApplyOne(
[this, &applier](const Transport::RingRecordView& record) {
const auto applyStarted = std::chrono::steady_clock::now();
applier.ApplyOne(record);
[this, &applier, timed](const Transport::RingRecordView& record) {
// P65ServerFrame: timed around the ONE call that is the server's work, and
// summed across the drains a frame spans. See the block above DrainRing's loop.
sFrameApplyNs += static_cast<std::uint64_t>(
std::chrono::duration_cast<std::chrono::nanoseconds>(
std::chrono::steady_clock::now() - applyStarted)
.count());
// Only when the line is on: two clock reads per record were a measurable part
// of a record's cost.
if (timed) {
const auto applyStarted = std::chrono::steady_clock::now();
applier.ApplyOne(record);
sFrameApplyNs += static_cast<std::uint64_t>(
std::chrono::duration_cast<std::chrono::nanoseconds>(
std::chrono::steady_clock::now() - applyStarted)
.count());
} else {
applier.ApplyOne(record);
}
++sFrameRecords;
// P9 W3, F2: outside the apply timing above; 0 in every run that is not F2.
if (m_testLogFloodLines != 0) FloodLogForTest(m_testLogFloodLines);