From 7cba253690b2cc5435717b326046ffbb87cc5998 Mon Sep 17 00:00:00 2001
From: Danielle Rozenblit <drozenblit@fb.com>
Date: Mon, 13 Mar 2023 11:53:55 -0700
Subject: [PATCH] dynamic multiplier

---
 lib/compress/zstd_compress.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/compress/zstd_compress.c b/lib/compress/zstd_compress.c
index f315d75eee2..9c8add576f8 100644
--- a/lib/compress/zstd_compress.c
+++ b/lib/compress/zstd_compress.c
@@ -4687,7 +4687,9 @@ static size_t ZSTD_loadDictionaryContent(ZSTD_matchState_t* ms,
     }
 
     /* If the dict is larger than we can reasonably index in our tables, only load the suffix. */
-    {   U32 maxDictSize = 8U * (1U << MIN(MAX(params->cParams.hashLog, params->cParams.chainLog), 28));
+    {
+        U32 multiplierLog = params->cParams.strategy >= ZSTD_btultra ? 8 : 3; /* multiplier based on strategy */
+        U32 maxDictSize = 1U << MIN(MAX(params->cParams.hashLog, params->cParams.chainLog) + multiplierLog, 31);
         if (srcSize > maxDictSize) {
             ip = iend - maxDictSize;
             src = ip;