Hi,
I have noticed that Nutch while parsing segment data, doing update,
indexing or other CPU demanding operations is using only one CPU (core).
Actually it uses both but alternately: when one CPU goes 100% other CPU
is on 1%, and then they switch (never using both CPU on 100%). For
example, when parsing segment data Nutch java process uses 100% CPU
(according to top) for a long time, but when I look CPU history (with
System Monitor) I see only one CPU is on 100% while other CPU is barely
used (and then they switch). Is it possible to configure Nutch to use
both CPUs (cores) simultaneously to get max performance (more threads
for parse,update,index,merge)? I am also curious about why Nutch uses so
much CPU time when parsing fetched data while there is absolutely no IO
(no disk write/read)?
Thanks,
Tomislav
