Also i noticed that in the begin the speed was normal, and it slowed down later. The total space of the index is 15GB, and *.fdt takes 12GB. I allocated 8GB memory for forceMerge, is this enough for that? I readed the code and doc, it seems that *.fdt is readed and stored in block of 16KB, i guess it won't need too much memory to merge them.
At 2015-08-20 22:00:27, "Michael McCandless" <luc...@mikemccandless.com> wrote: >I would first try upgrading you JVM: 1.7.0_05 is ancient. > >Mike McCandless > >http://blog.mikemccandless.com > > >On Thu, Aug 20, 2015 at 7:49 AM, dr <bfore...@126.com> wrote: >> Hi ,all >> Currenty i met a probleam with forceMerge(1). During forceMerging some >> of my machine spent too much time(10-20 hours for a index size of 15GB). By >> using some command like top, iostat, jstack. I found that the avg of cpu, >> and disk is too low, nearly zero. And the size of the the index files >> increased very very slowly. From jstack, i found that the application is >> hanging on IO operations, like FileInputStream or DirectByteArray. But when >> i did some copy operation on the machine the speed may become normal. >> >> Should this issue be related with the JVM, Operating System and hardware? >> Did anybody met the same probleam, or have any idea about Java, Linux >> and IO. >> Some basic info about my system and application. >> >> | Lucece version | 4.10.3 | >> | Jdk version | jdk 1.7.0_05 | >> | OS | redhat 4.4.4 | >> | cpu | IntelX5650 | >> | Memory | 24GB | >> >> >> Best Reagrds > >--------------------------------------------------------------------- >To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >For additional commands, e-mail: java-user-h...@lucene.apache.org >
