Change default log interval to 20 seconds

README

@@ -233,7 +233,7 @@ Options for both config file and command line:
 --force-dev-init    Always initialize devices when possible (such as bitstream uploads to some FPGAs)
 --kernel-path|-K <arg> Specify a path to where bitstream and kernel files are (default: "/usr/local/bin")
 --load-balance      Change multipool strategy from failover to quota based balance
---log|-l <arg>      Interval in seconds between log output (default: 5)
+--log|-l <arg>      Interval in seconds between log output (default: 20)
 --log-file|-L <arg> Append log file for output messages
 --log-microseconds  Include microseconds in log output
 --monitor|-m <arg>  Use custom pipe cmd for output messages
@@ -456,7 +456,8 @@ The totals line shows the following:
 Each column is as follows:
   The number of devices and processors currently mining
   Hottest temperature reported by any processor
-  5 second exponentially decaying average hash rate
+  20 second exponentially decaying average hash rate (configurable with --log
+      option)
   An all time average hash rate
   An all time average hash rate based on actual nonces found, adjusted for pool
       reject and stale rate

miner.c

@@ -158,7 +158,7 @@ const int opt_cutofftemp = 95;
 int opt_hysteresis = 3;
 static int opt_retries = -1;
 int opt_fail_pause = 5;
-int opt_log_interval = 5;
+int opt_log_interval = 20;
 int opt_queue = 1;
 int opt_scantime = 60;
 int opt_expiry = 120;