Commit dc20764a37894e042fc3f8be9c5e413fe2521873
2021-10-15T09:30:29
limit delta chain length in newly created pack files to 32 deltas Our former limit was 128 which is fairly high. Git uses 50 by default. A smaller limit results in slightly larger pack files but makes both packing and unpacking faster.
diff --git a/lib/pack_create.c b/lib/pack_create.c
index 953b2e8..6bcae58 100644
--- a/lib/pack_create.c
+++ b/lib/pack_create.c
@@ -221,7 +221,7 @@ pick_deltas(struct got_pack_meta **meta, int nmeta, int nours,
}
base = meta[j];
/* long chains make unpacking slow, avoid such bases */
- if (base->nchain >= 128 ||
+ if (base->nchain >= 32 ||
base->obj_type != m->obj_type)
continue;