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1diff --git a/pahole.c b/pahole.c
2index 6fc4ed6..a4e306f 100644
3--- a/pahole.c
4+++ b/pahole.c
5@@ -1687,8 +1687,11 @@ static error_t pahole__options_parser(int key, char *arg,
6 class_name = arg; break;
7 case 'j':
8 #if _ELFUTILS_PREREQ(0, 178)
9- conf_load.nr_jobs = arg ? atoi(arg) :
10- sysconf(_SC_NPROCESSORS_ONLN) * 1.1;
11+ // Force single thread if reproducibility is desirable.
12+ if (!getenv("SOURCE_DATE_EPOCH")) {
13+ conf_load.nr_jobs = arg ? atoi(arg) :
14+ sysconf(_SC_NPROCESSORS_ONLN) * 1.1;
15+ }
16 #else
17 fputs("pahole: Multithreading requires elfutils >= 0.178. Continuing with a single thread...\n", stderr);
18 #endif