Adding real allocator fragmentation to INFO and MEMORY command + active defrag test

other fixes / improvements:
- LUA script memory isn't taken from zmalloc (taken from libc malloc)
  so it can cause high fragmentation ratio to be displayed (which is false)
- there was a problem with "fragmentation" info being calculated from
  RSS and used_memory sampled at different times (now sampling them together)

other details:
- adding a few more allocator info fields to INFO and MEMORY commands
- improve defrag test to measure defrag latency of big keys
- increasing the accuracy of the defrag test (by looking at real grag info)
  this way we can use an even lower threshold and still avoid false positives
- keep the old (total) "fragmentation" field unchanged, but add new ones for spcific things
- add these the MEMORY DOCTOR command
- deduct LUA memory from the rss in case of non jemalloc allocator (one for which we don't "allocator active/used")
- reduce sampling rate of the rss and allocator info

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/test_helper.tcl b/tests/test_helper.tcl
index 7def9a7f6..3114f844c 100644
--- a/tests/test_helper.tcl
+++ b/tests/test_helper.tcl
@@ -452,6 +452,8 @@ for {set j 0} {$j < [llength $argv]} {incr j} {
             puts $t
         }
         exit 0
+    } elseif {$opt eq {--verbose}} {
+        set ::verbose 1
     } elseif {$opt eq {--client}} {
         set ::client 1
         set ::test_server_port $arg