shrink stash for very small sparse tensors

2 files changed, 4 insertions, 4 deletions

diff --git a/vespalib/src/tests/stash/stash.cpp b/vespalib/src/tests/stash/stash.cpp
index ebf38a1343a..7ad62b32bda 100644
--- a/vespalib/src/tests/stash/stash.cpp
+++ b/vespalib/src/tests/stash/stash.cpp
@@ -253,9 +253,9 @@ TEST("require that the chunk size can be adjusted") {
     EXPECT_EQUAL(64000u, stash.get_chunk_size());
 }
 
-TEST("require that minimal chunk size is 4096") {
-    Stash stash(128);
-    EXPECT_EQUAL(4096u, stash.get_chunk_size());
+TEST("require that minimal chunk size is 96") {
+    Stash stash(50);
+    EXPECT_EQUAL(96u, stash.get_chunk_size());
 }
 
 TEST("require that a stash can be moved by construction") {
diff --git a/vespalib/src/vespa/vespalib/util/stash.cpp b/vespalib/src/vespa/vespalib/util/stash.cpp
index 31580e871db..ba5386ca74f 100644
--- a/vespalib/src/vespa/vespalib/util/stash.cpp
+++ b/vespalib/src/vespa/vespalib/util/stash.cpp
@@ -63,7 +63,7 @@ Stash::do_alloc(size_t size)
 Stash::Stash(size_t chunk_size) noexcept
     : _chunks(nullptr),
       _cleanup(nullptr),
-      _chunk_size(std::max(size_t(4096), chunk_size))
+      _chunk_size(std::max(size_t(96), chunk_size))
 {
 }