？？？？？系统日志是在哪里？linux的？

手动运行poller不报任何错误。

现在又出个图，我把data source设置为debug后执行了poller.php结果cpu的图除了，其他的图没有，还是没有数据，都是nan

执行poller.php --debug返回如下结果

08/15/2013 10:19:07 AM - POLLER: Poller[0] NOTE: Poller Int: '300', Cron Int: '300', Time Since Last: '246', Max Runtime '298', Poller Runs: '1'

08/15/2013 10:19:07 AM - POLLER: Poller[0] DEBUG: About to Spawn a Remote Process [CMD: /usr/bin/php, ARGS: -q "/usr/share/cacti/cmd.php" 0 1]

08/15/2013 10:19:07 AM - POLLER: Poller[0] Parsed MULTI output field '1min:0.03' [map 1min->load_1min]

08/15/2013 10:19:07 AM - POLLER: Poller[0] Parsed MULTI output field '5min:0.04' [map 5min->load_5min]

08/15/2013 10:19:07 AM - POLLER: Poller[0] Parsed MULTI output field '10min:0.00' [map 10min->load_15min]

OK u:0.00 s:0.00 r:0.01

08/15/2013 10:19:07 AM - SYSTEM STATS: Time:0.1197 Method:cmd.php Processes:1 Threads:N/A Hosts:2 HostsPerProcess:2 DataSources:1 RRDsProcessed:1

Loop  Time is: 0.12

Sleep Time is: 299.88

Total Time is: 0.12

08/15/2013 10:19:07 AM - POLLER: Poller[0] DEBUG: About to Spawn a Remote Process [CMD: /usr/bin/php, ARGS:  -q /usr/share/cacti/plugins/hmib/poller_hmib.php -M]

08/15/2013 10:19:07 AM - POLLER: Poller[0] DEBUG: About to Spawn a Remote Process [CMD: /usr/bin/php, ARGS: -q /usr/share/cacti/plugins/nectar/poller_nectar.php]

08/15/2013 10:19:07 AM - POLLER: Poller[0] DEBUG: About to Spawn a Remote Process [CMD: /usr/bin/php, ARGS:  -q /usr/share/cacti/plugins/syslog/syslog_process.php]

08/15/2013 10:19:07 AM - WEATHERMAP: Poller[0] Weathermap 0.97a starting - Normal logging mode. Turn on DEBUG in Cacti for more information

08/15/2013 10:19:07 AM - WEATHERMAP: Poller[0] STATS: Weathermap 0.97a run complete - Thu, 15 Aug 13 10:19:07 +0800: 0 maps were run in 0 seconds with 0 warnings.