diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/utils/mmgr/generation.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/backend/utils/mmgr/generation.c b/src/backend/utils/mmgr/generation.c index 65fd00d0137..f9016a7ed72 100644 --- a/src/backend/utils/mmgr/generation.c +++ b/src/backend/utils/mmgr/generation.c @@ -271,8 +271,10 @@ GenerationContextCreate(MemoryContext parent, * GenerationReset * Frees all memory which is allocated in the given set. * - * The code simply frees all the blocks in the context - we don't keep any - * keeper blocks or anything like that. + * The initial "keeper" block (which shares a malloc chunk with the context + * header) is not given back to the operating system though. In this way, we + * don't thrash malloc() when a context is repeatedly reset after small + * allocations. */ void GenerationReset(MemoryContext context) |