[PATCH 1/2] test/perf: Check for /sbin/sysctl with which(1), not simply sysctl

[Stefano Brivio <sbrivio@redhat.com>]

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Otherwise, we're depending on having /sbin in $PATH. For some reason
I didn't completely grasp, with the new command dispatch mechanism
that's not the case anymore, even if I have /sbin in $PATH in the
parent shell.

Signed-off-by: Stefano Brivio <sbrivio(a)redhat.com>
---
 test/perf/passt_tcp | 4 ++--
 test/perf/passt_udp | 2 +-
 test/perf/pasta_tcp | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/test/perf/passt_tcp b/test/perf/passt_tcp
index 45095b6..f0cfa1b 100644
--- a/test/perf/passt_tcp
+++ b/test/perf/passt_tcp
@@ -11,8 +11,8 @@
 # Copyright (c) 2021 Red Hat GmbH
 # Author: Stefano Brivio <sbrivio(a)redhat.com>
 
-gtools	sysctl ip jq nproc seq sleep iperf3 tcp_rr tcp_crr # From neper
-nstools	sysctl ip jq nproc seq sleep iperf3 tcp_rr tcp_crr
+gtools	/sbin/sysctl ip jq nproc seq sleep iperf3 tcp_rr tcp_crr # From neper
+nstools	/sbin/sysctl ip jq nproc seq sleep iperf3 tcp_rr tcp_crr
 htools	bc head sed seq
 
 # In this setup, virtio_net TX queue sometimes hangs, still under investigation
diff --git a/test/perf/passt_udp b/test/perf/passt_udp
index d199523..80731d1 100644
--- a/test/perf/passt_udp
+++ b/test/perf/passt_udp
@@ -11,7 +11,7 @@
 # Copyright (c) 2021 Red Hat GmbH
 # Author: Stefano Brivio <sbrivio(a)redhat.com>
 
-gtools	sysctl ip jq nproc sleep iperf3 udp_rr # From neper
+gtools	/sbin/sysctl ip jq nproc sleep iperf3 udp_rr # From neper
 nstools	ip jq sleep iperf3 udp_rr
 htools	bc head sed
 
diff --git a/test/perf/pasta_tcp b/test/perf/pasta_tcp
index 4c19364..602ce52 100644
--- a/test/perf/pasta_tcp
+++ b/test/perf/pasta_tcp
@@ -12,7 +12,7 @@
 # Author: Stefano Brivio <sbrivio(a)redhat.com>
 
 htools	head ip seq bc sleep iperf3 tcp_rr tcp_crr jq sed
-nstools	sysctl nproc ip seq sleep iperf3 tcp_rr tcp_crr jq sed
+nstools	/sbin/sysctl nproc ip seq sleep iperf3 tcp_rr tcp_crr jq sed
 
 test	pasta: throughput and latency (local connections)
 
-- 
@@ -12,7 +12,7 @@
 # Author: Stefano Brivio <sbrivio(a)redhat.com>
 
 htools	head ip seq bc sleep iperf3 tcp_rr tcp_crr jq sed
-nstools	sysctl nproc ip seq sleep iperf3 tcp_rr tcp_crr jq sed
+nstools	/sbin/sysctl nproc ip seq sleep iperf3 tcp_rr tcp_crr jq sed
 
 test	pasta: throughput and latency (local connections)
 
-- 
2.35.1