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ocl: fix buffer pool small allocations issue (fixes #5815)

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This commit is contained in:
Alexander Alekhin
2015-12-16 13:49:00 +03:00
parent b2bb7d075a
commit 6f2632ca2e
1 changed files with 3 additions and 7 deletions
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10
modules/core/src/ocl.cpp
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@@ -3902,7 +3902,7 @@ protected:
if (e.capacity_ >= size)
{
size_t diff = e.capacity_ - size;
if (diff < size / 8 && (result_pos == reservedEntries_.end() || diff < minDiff))
if (diff < std::max((size_t)4096, size / 8) && (result_pos == reservedEntries_.end() || diff < minDiff))
{
minDiff = diff;
result_pos = i;
@@ -3941,12 +3941,8 @@ protected:
inline size_t _allocationGranularity(size_t size)
{
// heuristic values
if (size < 1024)
return 16;
else if (size < 64*1024)
return 64;
else if (size < 1024*1024)
return 4096;
if (size < 1024*1024)
return 4096; // don't work with buffers smaller than 4Kb (hidden allocation overhead issue)
else if (size < 16*1024*1024)
return 64*1024;
else