diff options
Diffstat (limited to 'src/backend/storage/buffer/buf_init.c')
| -rw-r--r-- | src/backend/storage/buffer/buf_init.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/src/backend/storage/buffer/buf_init.c b/src/backend/storage/buffer/buf_init.c index 5804870ad48..a4163cf717d 100644 --- a/src/backend/storage/buffer/buf_init.c +++ b/src/backend/storage/buffer/buf_init.c @@ -187,11 +187,12 @@ BufferShmemSize(void) /* * It would be nice to include the I/O locks in the BufferDesc, but that - * would increase the size of a BufferDesc to more than one cache line, and - * benchmarking has shown that keeping every BufferDesc aligned on a cache - * line boundary is important for performance. So, instead, the array of - * I/O locks is allocated in a separate tranche. Because those locks are - * not highly contentended, we lay out the array with minimal padding. + * would increase the size of a BufferDesc to more than one cache line, + * and benchmarking has shown that keeping every BufferDesc aligned on a + * cache line boundary is important for performance. So, instead, the + * array of I/O locks is allocated in a separate tranche. Because those + * locks are not highly contentended, we lay out the array with minimal + * padding. */ size = add_size(size, mul_size(NBuffers, sizeof(LWLockMinimallyPadded))); /* to allow aligning the above */ |