1 files changed, 206 insertions, 0 deletions
diff --git a/src/third_party/wiredtiger/test/suite/test_shared_cache01.py b/src/third_party/wiredtiger/test/suite/test_shared_cache01.py
new file mode 100644
index 00000000000..896a1e569ef
--- /dev/null
+++ b/src/third_party/wiredtiger/test/suite/test_shared_cache01.py
@@ -0,0 +1,206 @@
+#!/usr/bin/env python
+#
+# Public Domain 2014-2016 MongoDB, Inc.
+# Public Domain 2008-2014 WiredTiger, Inc.
+#
+# This is free and unencumbered software released into the public domain.
+#
+# Anyone is free to copy, modify, publish, use, compile, sell, or
+# distribute this software, either in source code form or as a compiled
+# binary, for any purpose, commercial or non-commercial, and by any
+# means.
+#
+# In jurisdictions that recognize copyright laws, the author or authors
+# of this software dedicate any and all copyright interest in the
+# software to the public domain. We make this dedication for the benefit
+# of the public at large and to the detriment of our heirs and
+# successors. We intend this dedication to be an overt act of
+# relinquishment in perpetuity of all present and future rights to this
+# software under copyright law.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+# If unittest2 is available, use it in preference to (the old) unittest
+
+import os
+import shutil
+import wiredtiger, wttest
+from wttest import unittest
+from helper import key_populate, simple_populate
+
+# test_shared_cache01.py
+#    Checkpoint tests
+# Test shared cache shared amongst multiple connections.
+class test_shared_cache01(wttest.WiredTigerTestCase):
+
+    uri = 'table:test_shared_cache01'
+    # Setup fairly large items to use up cache
+    data_str = 'abcdefghijklmnopqrstuvwxyz' * 20
+
+    # Add a set of records
+    def add_records(self, session, start, stop):
+        cursor = session.open_cursor(self.uri, None, "overwrite")
+        for i in range(start, stop+1):
+            cursor["%010d KEY------" % i] = ("%010d VALUE " % i) + self.data_str
+        cursor.close()
+
+    # Disable default setup/shutdown steps - connections are managed manually.
+    def setUpSessionOpen(self, conn):
+        return None
+
+    def close_conn(self):
+        return None
+
+    def setUpConnectionOpen(self, dir):
+        return None
+
+    def openConnections(
+            self,
+            connections,
+            pool_opts = ',shared_cache=(name=pool,size=200M,chunk=10M,reserve=30M),',
+            extra_opts = '',
+            add=0):
+        if add == 0:
+            self.conns = []
+            self.sessions = []
+        # Open the set of connections.
+        for name in connections:
+            shutil.rmtree(name, True)
+            os.mkdir(name)
+            next_conn =  self.wiredtiger_open(
+                name,
+                'create,error_prefix="' + self.shortid() + ': "' +
+                pool_opts + extra_opts)
+            self.conns.append(next_conn)
+            self.sessions.append(next_conn.open_session(None))
+        return None
+
+    def closeConnections(self):
+        for tmp_conn in self.conns:
+            tmp_conn.close()
+        self.conns = []
+        self.sessions = [] # Implicitly closed when closing sessions.
+
+    # Basic test of shared cache
+    def test_shared_cache_basic(self):
+        nops = 1000
+        self.openConnections(['WT_TEST1', 'WT_TEST2'])
+
+        for sess in self.sessions:
+            sess.create(self.uri, "key_format=S,value_format=S")
+            self.add_records(sess, 0, nops)
+        self.closeConnections()
+
+    # Test of shared cache with more connections
+    def test_shared_cache_more_connections(self):
+        nops = 1000
+        self.openConnections(['WT_TEST1', 'WT_TEST2', 'WT_TEST3', 'WT_TEST4'])
+
+        for sess in self.sessions:
+            sess.create(self.uri, "key_format=S,value_format=S")
+            self.add_records(sess, 0, nops)
+        self.closeConnections()
+
+    # Do enough work for the shared cache to be fully allocated.
+    def test_shared_cache_full(self):
+        nops = 10000
+        self.openConnections(['WT_TEST1', 'WT_TEST2'])
+        for sess in self.sessions:
+            sess.create(self.uri, "key_format=S,value_format=S")
+
+        for i in range(20):
+            for sess in self.sessions:
+                self.add_records(sess, i * nops, (i + 1) * nops)
+        self.closeConnections()
+
+    # Switch the work between connections, to test rebalancing.
+    def test_shared_cache_rebalance(self):
+        # About 100 MB of data with ~250 byte values.
+        nops = 200000
+        self.openConnections(['WT_TEST1', 'WT_TEST2'])
+
+        for sess in self.sessions:
+            sess.create(self.uri, "key_format=S,value_format=S")
+            self.add_records(sess, 0, nops)
+        self.closeConnections()
+
+    # Add a new connection once the shared cache is already established.
+    def test_shared_cache_late_join(self):
+        nops = 1000
+        self.openConnections(['WT_TEST1', 'WT_TEST2'])
+
+        for sess in self.sessions:
+            sess.create(self.uri, "key_format=S,value_format=S")
+            self.add_records(sess, 0, nops)
+
+        self.openConnections(['WT_TEST3'], add=1)
+        self.sessions[-1].create(self.uri, "key_format=S,value_format=S")
+        for sess in self.sessions:
+            self.add_records(sess, 0, nops)
+        self.closeConnections()
+
+    # Close a connection and keep using other connections.
+    def test_shared_cache_leaving(self):
+        nops = 10000
+        self.openConnections(['WT_TEST1', 'WT_TEST2', 'WT_TEST3'])
+
+        for sess in self.sessions:
+            sess.create(self.uri, "key_format=S,value_format=S")
+            self.add_records(sess, 0, nops)
+        conn = self.conns.pop()
+        conn.close()
+        self.sessions.pop()
+        for sess in self.sessions:
+            self.add_records(sess, 0, nops)
+        self.closeConnections()
+
+    # Test verbose output
+    @unittest.skip("Verbose output handling")
+    def test_shared_cache_verbose(self):
+        nops = 1000
+        self.openConnections(
+                ['WT_TEST1', 'WT_TEST2'], extra_opts="verbose=[shared_cache]")
+
+        for sess in self.sessions:
+            sess.create(self.uri, "key_format=S,value_format=S")
+            self.add_records(sess, 0, nops)
+        self.closeConnections()
+
+    # Test opening a connection outside of the shared cache
+    def test_shared_cache_mixed(self):
+        nops = 1000
+        self.openConnections(['WT_TEST1', 'WT_TEST2'])
+
+        self.openConnections(['WT_TEST3'], add=1, pool_opts=',cache_size=50M')
+        for sess in self.sessions:
+            sess.create(self.uri, "key_format=S,value_format=S")
+            self.add_records(sess, 0, nops)
+        self.closeConnections()
+
+    # Test default config values
+    def test_shared_cache_defaults(self):
+        nops = 1000
+        self.openConnections(['WT_TEST1', 'WT_TEST2'], pool_opts=',shared_cache=(name=pool,size=200M)')
+
+        for sess in self.sessions:
+            sess.create(self.uri, "key_format=S,value_format=S")
+            self.add_records(sess, 0, nops)
+        self.closeConnections()
+
+    # Test default config values
+    def test_shared_cache_defaults2(self):
+        nops = 1000
+        self.openConnections(['WT_TEST1', 'WT_TEST2'], pool_opts=',shared_cache=(name=pool)')
+
+        for sess in self.sessions:
+            sess.create(self.uri, "key_format=S,value_format=S")
+            self.add_records(sess, 0, nops)
+        self.closeConnections()
+
+if __name__ == '__main__':
+    wttest.run()