Better defaults for the disk cache perftest.

net/disk_cache/disk_cache_perftest.cc

Index: net/disk_cache/disk_cache_perftest.cc
diff --git a/net/disk_cache/disk_cache_perftest.cc b/net/disk_cache/disk_cache_perftest.cc
index 959143b884d7bc09249113c59dfc364937614313..ec683302f517bde0e0f3e0c8e28c6f07ceeecd1a 100644
--- a/net/disk_cache/disk_cache_perftest.cc
+++ b/net/disk_cache/disk_cache_perftest.cc
@@ -79,8 +79,8 @@ class DiskCachePerfTest : public DiskCacheTestWithCache {
   const size_t kFdLimitForCacheTests = 8192;
 
   const int kNumEntries = 1000;
-  const int kHeadersSize = 200;
-  const int kBodySize = 16 * 1024 - 1;
+  const int kHeadersSize = 800;
+  const int kBodySize = 256 * 1024 - 1;
 
   std::vector<TestEntry> entries_;
 
@@ -88,9 +88,12 @@ class DiskCachePerfTest : public DiskCacheTestWithCache {
   const size_t saved_fd_limit_;
 };
 
-// Creates num_entries on the cache, and writes 200 bytes of metadata and up
+// Creates num_entries on the cache, and writes kHeaderSize bytes of metadata
+// and up
 // to kBodySize of data to each entry.
 bool DiskCachePerfTest::TimeWrite() {
+  // TODO(gavinp): This test would be significantly more realistic if it didn't
+  // do single reads and writes.

[Randy Smith (Not in Mondays), 2016/05/18 16:51:07]

nit, suggestion: Sketch out in a bit more detail in the comment what a more
realistic test would look like?

   scoped_refptr<net::IOBuffer> buffer1(new net::IOBuffer(kHeadersSize));
   scoped_refptr<net::IOBuffer> buffer2(new net::IOBuffer(kBodySize));