[Xen-devel] [PATCH 26/27] Kernbench perf comparison between host and guest

[Dario Faggioli <dario.faggioli@xxxxxxxxxx>]

From: Dario Faggioli <raistlin@xxxxxxxx>

Recipes are defined for running kernbench on baremetal,
and on PV and HVM guests. Jobs making use of those recipes
are instantiated too.

Aim is making  investigating performances loss due to
virtualization overhead easy and automatable.

Signed-off-by: Dario Faggioli <dario.faggioli@xxxxxxxxxx>
Cc: Wei Liu <wei.liu2@xxxxxxxxxx>
Cc: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
Cc: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
---
 make-bench-flight |   14 +++++++++-----
 sg-run-job        |   21 +++++++++++++++------
 2 files changed, 24 insertions(+), 11 deletions(-)

diff --git a/make-bench-flight b/make-bench-flight
index d41cbbd..12ac9f7 100755
--- a/make-bench-flight
+++ b/make-bench-flight
@@ -109,8 +109,9 @@ do_kernbench_tests () {
           all_hostflags=$most_hostflags
 }
 
-do_hostcmp_unixbench_tests () {
-  sched=$1
+do_bench_hostcmp_tests () {
+  bench=$1
+  sched=$2
 
   # x86_64 only (for now)
   if [ $xenarch != amd64 ]; then
@@ -122,10 +123,11 @@ do_hostcmp_unixbench_tests () {
   fi
 
   job_create_test \
-          bench-hostcmp-unixbench-$xenarch-$sched bench-hostcmp-unixbench \
+          bench-hostcmp-$bench-$xenarch-$sched bench-hostcmp-$bench \
           xl $xenarch $dom0arch xen_boot_append="sched=$sched" 
max_bench_cpus=16 \
           max_bench_mem=24576 $debian_runvars bios=seabios 
unixbench_params="-i 3" \
-          debbenchhvm_image=debian-7.2.0-amd64-CD-1.iso 
all_hostflags=$most_hostflags
+          kernbench_params="-n 3" 
debbenchhvm_image=debian-7.2.0-amd64-CD-1.iso \
+          all_hostflags=$most_hostflags
 }
 
 test_matrix_do_one () {
@@ -134,7 +136,9 @@ test_matrix_do_one () {
       do_unixbench_tests $t $s 4 4096 # 4 vcpus, 4GB RAM
       do_kernbench_tests $t $s 4 4096
     done
-    do_hostcmp_unixbench_tests $s
+    for b in unixbench kernbench; do
+      do_bench_hostcmp_tests $b $s
+    done
   done
 }
 
diff --git a/sg-run-job b/sg-run-job
index b16584a..1b3f4d6 100755
--- a/sg-run-job
+++ b/sg-run-job
@@ -388,28 +388,37 @@ proc run-job/bench-kernbench-hvm {} {
     bench-kernbench-guest debianhvm
 }
 
-proc need-hosts/bench-hostcmp-unixbench {} { return {REBOOT host} }
-proc run-job/bench-hostcmp-unixbench {} {
+proc bench-hostcmp {bench} {
     # Run benchmark in a PV guest
     set g debbenchpv
     run-ts . = ts-debian-install           + host $g
     run-ts . = ts-debian-fixup             + host $g
     run-ts . = ts-bench-hostcmp-guest-prep + host $g
-    bench-unixbench-guest $g
+    bench-$bench-guest $g
     # Run benchmark in an HVM guest
     set g debbenchhvm
     run-ts . = ts-debian-hvm-install       + host $g
     run-ts . = ts-guest-stop               + host $g
     run-ts . = ts-bench-hostcmp-guest-prep + host $g
-    bench-unixbench-guest $g
+    bench-$bench-guest $g
     # Run benchmark on the host
     run-ts . = ts-bench-hostcmp-host-prep
     run-ts . = ts-host-reboot
-    bench-unixbench-host
-    run-ts . = ts-bench-hostcmp-post       + host unixbench
+    bench-$bench-host
+    run-ts . = ts-bench-hostcmp-post       + host $bench
     run-ts . = ts-host-reboot
 }
 
+proc need-hosts/bench-hostcmp-unixbench {} { return {REBOOT host} }
+proc run-job/bench-hostcmp-unixbench {} {
+    bench-hostcmp unixbench
+}
+
+proc need-hosts/bench-hostcmp-kernbench {} { return {REBOOT host} }
+proc run-job/bench-hostcmp-kernbench {} {
+    bench-hostcmp kernbench
+}
+
 #---------- builds ----------
 
 proc need-hosts/build {} { return BUILD }


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