diff --git a/ceph.spec b/ceph.spec
index 6143f9a..8d8ee00 100644
--- a/ceph.spec
+++ b/ceph.spec
@@ -1240,7 +1240,7 @@ export CXXFLAGS=$(echo $RPM_OPT_FLAGS | sed -e 's/-Wp,-D_FORTIFY_SOURCE=2//g')
 %endif
 
 # Parallel build settings ...
-CEPH_MFLAGS_JOBS="-j16"
+CEPH_MFLAGS_JOBS="-j32"
 CEPH_SMP_NCPUS=$(echo "$CEPH_MFLAGS_JOBS" | sed 's/-j//')
 %if 0%{?__isa_bits} == 32
 # 32-bit builds can use 3G memory max, which is not enough even for -j2
@@ -1252,7 +1252,7 @@ free -h
 echo "System limits:"
 ulimit -a
 if test -n "$CEPH_SMP_NCPUS" -a "$CEPH_SMP_NCPUS" -gt 1 ; then
-    mem_per_process=2500
+    mem_per_process=3000
     max_mem=$(LANG=C free -m | sed -n "s|^Mem: *\([0-9]*\).*$|\1|p")
     max_jobs="$(($max_mem / $mem_per_process))"
     test "$CEPH_SMP_NCPUS" -gt "$max_jobs" && CEPH_SMP_NCPUS="$max_jobs" && echo "Warning: Reducing build parallelism to -j$max_jobs because of memory limits"