Change the default lookaside configuration from 500 slots of 128 bytes each to 125 slots of 512 bytes each. This uses the same amount of memory (64,000 bytes) but seems to perform much better in test applications.

FossilOrigin-Name: 52a12e47de88744187bd1c71f2820885cde414a8

manifest

@@ -1,5 +1,5 @@
-C Simplifications\sto\sthe\sway\sUnpackedRecord\sobjects\sare\sallocated.\s\sSmaller\nand\sfaster\scode\sthat\salso\sfixes\sa\ssubtle\s(currently\sunreachable)\sbug.
-D 2016-12-21T19:45:54.698
+C Change\sthe\sdefault\slookaside\sconfiguration\sfrom\s500\sslots\sof\s128\sbytes\seach\sto\s125\sslots\sof\s512\sbytes\seach.\s\sThis\suses\sthe\ssame\samount\sof\smemory\s(64,000\sbytes)\sbut\sseems\sto\sperform\smuch\sbetter\sin\stest\sapplications.
+D 2016-12-21T21:26:58.399
 F Makefile.in 41bd4cad981487345c4a84081074bcdb876e4b2e
 F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
 F Makefile.msc b8ca53350ae545e3562403d5da2a69cec79308da
@@ -345,7 +345,7 @@ F src/expr.c c7c11fbe8bd4d27d04f1370efcce5a05b4fca229
 F src/fault.c 460f3e55994363812d9d60844b2a6de88826e007
 F src/fkey.c 2e9aabe1aee76273aff8a84ee92c464e095400ae
 F src/func.c 43916c1d8e6da5d107d91d2b212577d4f69a876a
-F src/global.c 235021a21ee2cb52b304589f8f9e85a36bbe24fa
+F src/global.c dcdb89f30b7aa531c5660030af106bc5bc48ef2e
 F src/hash.c 63d0ee752a3b92d4695b2b1f5259c4621b2cfebd
 F src/hash.h ab34c5c54a9e9de2e790b24349ba5aab3dbb4fd4
 F src/hwtime.h 747c1bbe9df21a92e9c50f3bbec1de841dc5e5da
@@ -1539,7 +1539,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 165c044686212fbf7182dd560ad1e57eb4cc9838
-R 4dcc327309935c00dd451588970c060d
+P f7ab01f254cd9d7006b8dec29adb234a671b8e6f
+R 410ebc8fd4cf49ee7979c021d6ce32fb
 U drh
-Z 2858688c4db6360d8c3b1c8fd6aab8f2
+Z 1212e279b84c412f5a6bde29137a4a85

manifest.uuid

@@ -1 +1 @@
-f7ab01f254cd9d7006b8dec29adb234a671b8e6f
+52a12e47de88744187bd1c71f2820885cde414a8

src/global.c

@@ -181,8 +181,8 @@ SQLITE_WSD struct Sqlite3Config sqlite3Config = {
    SQLITE_ALLOW_COVERING_INDEX_SCAN,   /* bUseCis */
    0x7ffffffe,                /* mxStrlen */
    0,                         /* neverCorrupt */
-   128,                       /* szLookaside */
-   500,                       /* nLookaside */
+   512,                       /* szLookaside */
+   125,                       /* nLookaside */
    SQLITE_STMTJRNL_SPILL,     /* nStmtSpill */
    {0,0,0,0,0,0,0,0},         /* m */
    {0,0,0,0,0,0,0,0,0},       /* mutex */