[PATCH 1 of 2] perf: time fncache read and write performance

[Bryan O'Sullivan]

# HG changeset patch
# User Bryan O'Sullivan <bryano at fb.com>
# Date 1334269312 25200
# Node ID 524152bfd147d5375a3692a35698857b92c8c6f5
# Parent  0353b99ba459ac80bb71388a49118d0336f66855
perf: time fncache read and write performance

diff -r 0353b99ba459 -r 524152bfd147 contrib/perf.py
--- a/contrib/perf.py	Thu Apr 12 14:45:24 2012 -0700
+++ b/contrib/perf.py	Thu Apr 12 15:21:52 2012 -0700
@@ -157,6 +157,22 @@
 def perfcca(ui, repo):
     timer(lambda: scmutil.casecollisionauditor(ui, False, repo[None]))
 
+def perffncacheload(ui, repo):
+    from mercurial import scmutil, store
+    s = store.store(set(['store','fncache']), repo.path, scmutil.opener)
+    def d():
+        s.fncache._load()
+    timer(d)
+
+def perffncachewrite(ui, repo):
+    from mercurial import scmutil, store
+    s = store.store(set(['store','fncache']), repo.path, scmutil.opener)
+    s.fncache._load()
+    def d():
+        s.fncache._dirty = True
+        s.fncache.write()
+    timer(d)
+
 def perfdiffwd(ui, repo):
     """Profile diff of working directory changes"""
     options = {
@@ -186,6 +202,8 @@
 
 cmdtable = {
     'perfcca': (perfcca, []),
+    'perffncacheload': (perffncacheload, []),
+    'perffncachewrite': (perffncachewrite, []),
     'perflookup': (perflookup, []),
     'perfnodelookup': (perfnodelookup, []),
     'perfparents': (perfparents, []),