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Bug 1863912 - Only enable PHC when a system has at least 8GB RAM r=decoder

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Differential Revision: https://phabricator.services.mozilla.com/D193178
This commit is contained in:
Paul Bone 2023-11-09 11:59:11 +00:00
parent 1fbc2b2779
commit 4595ea0a10
1 changed files with 10 additions and 2 deletions
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12
xpcom/base/PHCManager.cpp
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@ -10,6 +10,7 @@
#include "mozilla/Preferences.h"
#include "mozilla/StaticPrefs_memory.h"
#include "mozilla/Telemetry.h"
#include "prsystem.h"
namespace mozilla {
@ -28,9 +29,16 @@ static void PrefChangeCallback(const char* aPrefName, void* aNull) {
}
void InitPHCState() {
SetPHCState(GetPHCStateFromPref());
size_t memSize = PR_GetPhysicalMemorySize();
// Only enable PHC if there are at least 8GB of ram. Note that we use
// 1000 bytes per kilobyte rather than 1024. Some 8GB machines will have
// slightly lower actual RAM available after some hardware devices
// reserve some.
if (memSize >= size_t(8'000'000'000llu)) {
SetPHCState(GetPHCStateFromPref());
Preferences::RegisterCallback(PrefChangeCallback, kPHCPref);
Preferences::RegisterCallback(PrefChangeCallback, kPHCPref);
}
}
void ReportPHCTelemetry() {