diff options
| -rw-r--r-- | items.c | 19 |
1 files changed, 17 insertions, 2 deletions
@@ -226,8 +226,23 @@ item_chunk *do_item_alloc_chunk(item_chunk *ch, const size_t bytes_remain) { unsigned int id = slabs_clsid(size); item_chunk *nch = (item_chunk *) do_item_alloc_pull(size, id); - if (nch == NULL) - return NULL; + if (nch == NULL) { + // The final chunk in a large item will attempt to be a more + // appropriately sized chunk to minimize memory overhead. However, if + // there's no memory available in the lower slab classes we fail the + // SET. In these cases as a fallback we ensure we attempt to evict a + // max-size item and reuse a large chunk. + if (size == settings.slab_chunk_size_max) { + return NULL; + } else { + size = settings.slab_chunk_size_max; + id = slabs_clsid(size); + nch = (item_chunk *) do_item_alloc_pull(size, id); + + if (nch == NULL) + return NULL; + } + } // link in. // ITEM_CHUNK[ED] bits need to be protected by the slabs lock. |