X-Git-Url: http://git.vrable.net/?a=blobdiff_plain;f=bluesky%2Finit.c;h=df3370907ce9c6adc98f385debf96bed4ee1a12c;hb=f6edd13c644ec73c0f57aa580514413372ce3f0e;hp=9a7a6ebfae566117d1ba1c1a110aa2e3299c10a6;hpb=fb15c75f3c8eeb3d7b277795ced44bb4928273a1;p=bluesky.git

diff --git a/bluesky/init.c b/bluesky/init.c
index 9a7a6eb..df33709 100644
--- a/bluesky/init.c
+++ b/bluesky/init.c
@@ -13,11 +13,32 @@
 
 #include "bluesky-private.h"
 
-BlueSkyOptions bluesky_options;
+int bluesky_verbose = 0;
+
+BlueSkyOptions bluesky_options = {
+    .cache_size = 1024*1024,         // Default cache size is 1 GiB
+};
 
 /* Maximum number of threads to use in any particular thread pool, or -1 for no
  * limit */
-int bluesky_max_threads = -1;
+int bluesky_max_threads = 16;
+
+/* Watermark levels for cache tuning: these control when dirty data is flushed
+ * from cache, when clean data is dropped from the cache, etc.  These values
+ * are measured in blocks, not bytes.
+ *
+ * There are a few relevant levels:
+ *   low: Below this point, data is not forced out due to memory pressure
+ *   medium: At this point start flushing data to get back below medium
+ *   high: Flush data very aggressively (launch extra tasks if needed)
+ */
+int bluesky_watermark_low_dirty    = (64 << 20) / BLUESKY_BLOCK_SIZE;
+int bluesky_watermark_medium_dirty = (96 << 20) / BLUESKY_BLOCK_SIZE;
+int bluesky_watermark_high_dirty   = (192 << 20) / BLUESKY_BLOCK_SIZE;
+
+int bluesky_watermark_low_total    = (64 << 20) / BLUESKY_BLOCK_SIZE;
+int bluesky_watermark_medium_total = (128 << 20) / BLUESKY_BLOCK_SIZE;
+int bluesky_watermark_high_total   = (256 << 20) / BLUESKY_BLOCK_SIZE;
 
 /* Environment variables that can be used to initialize settings. */
 static struct {
@@ -28,6 +49,7 @@ static struct {
     {"BLUESKY_OPT_WRITETHROUGH", &bluesky_options.writethrough_cache},
     {"BLUESKY_OPT_SYNC_INODE_FETCH", &bluesky_options.sync_inode_fetches},
     {"BLUESKY_OPT_SYNC_FRONTENDS", &bluesky_options.sync_frontends},
+    {"BLUESKY_CACHE_SIZE", &bluesky_options.cache_size},
     {NULL, NULL}
 };
 
@@ -35,6 +57,9 @@ static struct {
 
 void bluesky_store_init_s3(void);
 void bluesky_store_init_kv(void);
+void bluesky_store_init_multi(void);
+void bluesky_store_init_bdb(void);
+void bluesky_store_init_simple(void);
 
 /* Initialize the BlueSky library and dependent libraries. */
 void bluesky_init(void)
@@ -54,4 +79,7 @@ void bluesky_init(void)
     bluesky_store_init();
     bluesky_store_init_kv();
     bluesky_store_init_s3();
+    bluesky_store_init_multi();
+    bluesky_store_init_bdb();
+    bluesky_store_init_simple();
 }