From: David Bremner <bremner@debian.org>

The caching and uncaching seem to be necessarily manual, as timing the
initial notmuch new is one of our goals with this suite.
---
 performance-test/.gitignore       |    1 +
 performance-test/Makefile.local   |    2 +-
 performance-test/basic            |    5 +++++
 performance-test/perf-test-lib.sh |   18 ++++++++++++++++++
 4 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/performance-test/.gitignore b/performance-test/.gitignore
index 7e20f7c..779a115 100644
--- a/performance-test/.gitignore
+++ b/performance-test/.gitignore
@@ -1,2 +1,3 @@
 tmp.*/
 corpus.mail.*/
+notmuch.cache.*/
diff --git a/performance-test/Makefile.local b/performance-test/Makefile.local
index eb713d0..b136a88 100644
--- a/performance-test/Makefile.local
+++ b/performance-test/Makefile.local
@@ -29,4 +29,4 @@ $(TXZFILE):
 download-corpus:
 	wget -O ${TXZFILE} ${DEFAULT_URL}
 
-CLEAN := $(CLEAN) $(dir)/tmp.* $(dir)/corpus.mail.*
+CLEAN := $(CLEAN) $(dir)/tmp.* $(dir)/corpus.mail.* $(dir)/notmuch.cache.*
diff --git a/performance-test/basic b/performance-test/basic
index 9d015ee..41a7ff1 100755
--- a/performance-test/basic
+++ b/performance-test/basic
@@ -2,11 +2,16 @@
 
 . ./perf-test-lib.sh
 
+uncache_database
+
 add_email_corpus
 
 print_header
 
 time_run 'initial notmuch new' 'notmuch new'
+
+cache_database
+
 time_run 'second notmuch new' 'notmuch new'
 time_run 'dump *' 'notmuch dump > tags.out'
 time_run 'restore *' 'notmuch restore < tags.out'
diff --git a/performance-test/perf-test-lib.sh b/performance-test/perf-test-lib.sh
index 9fbf874..c9b131a 100644
--- a/performance-test/perf-test-lib.sh
+++ b/performance-test/perf-test-lib.sh
@@ -36,6 +36,8 @@ then
 fi
 
 CORPUS_DIR=${TEST_DIRECTORY}/corpus.mail.$corpus_size
+DB_CACHE_DIR=${TEST_DIRECTORY}/notmuch.cache.$corpus_size
+
 add_email_corpus ()
 {
     rm -rf ${MAIL_DIR}
@@ -69,9 +71,25 @@ add_email_corpus ()
 	printf "\n"
 
     fi
+
     cp -lr $CORPUS_DIR $MAIL_DIR
+
+    if [ -d $DB_CACHE_DIR ]; then
+	cp -r $DB_CACHE_DIR ${MAIL_DIR}/.notmuch
+    fi
 }
 
+cache_database () {
+    if [ -d $MAIL_DIR/.notmuch ]; then
+	cp -r $MAIL_DIR/.notmuch $DB_CACHE_DIR
+    else
+	echo "Warning: No database found to cache"
+    fi
+}
+
+uncache_database () {
+    rm -rf $DB_CACHE_DIR
+}
 
 print_header () {
     printf "[v%4s]               Wall(s)\tUsr(s)\tSys(s)\tRes(K)\tIn(512B)\tOut(512B)\n" \
-- 
1.7.10.4