From: Nick Terrell <terrelln@fb.com>
Date: Thu, 27 Sep 2018 22:49:31 +0000 (-0700)
Subject: Reset number of threads less often
X-Git-Tag: v1.3.6^2~13^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F1343%2Fhead;p=thirdparty%2Fzstd.git

Reset number of threads less often
---

diff --git a/tests/zstreamtest.c b/tests/zstreamtest.c
index b56009323..105e63e7d 100644
--- a/tests/zstreamtest.c
+++ b/tests/zstreamtest.c
@@ -1864,8 +1864,9 @@ static int fuzzerTests_newAPI(U32 seed, U32 nbTests, unsigned startTest,
                     CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, pledgedSrcSize) );
                 }
 
-                /* multi-threading parameters */
-                {   U32 const nbThreadsCandidate = (FUZ_rand(&lseed) & 4) + 1;
+                /* multi-threading parameters. Only adjust ocassionally for small tests. */
+                if (bigTests || (FUZ_rand(&lseed) & 0xF) == 0xF) {
+                    U32 const nbThreadsCandidate = (FUZ_rand(&lseed) & 4) + 1;
                     U32 const nbThreadsAdjusted = (windowLogMalus < nbThreadsCandidate) ? nbThreadsCandidate - windowLogMalus : 1;
                     U32 const nbThreads = MIN(nbThreadsAdjusted, nbThreadsMax);
                     DISPLAYLEVEL(5, "t%u: nbThreads : %u \n", testNb, nbThreads);