Thank you Yonik, excellent WIKI! I'll try without APR, I believe it's environmental issue; 100Mbps switched should do 10 times faster (current replica speed is 1Mbytes/sec)
> -----Original Message----- > From: ysee...@gmail.com [mailto:ysee...@gmail.com] On Behalf Of Yonik > Seeley > Sent: January-03-10 10:03 AM > To: solr-user@lucene.apache.org > Subject: Re: SOLR: Replication > > On Sat, Jan 2, 2010 at 11:35 PM, Fuad Efendi <f...@efendi.ca> wrote: > > I tried... I set APR to improve performance... server is slow while > replica; > > but "top" shows only 1% of I/O wait... it is probably environment > specific; > > So you're saying that stock tomcat (non-native APR) was also 10 times > slower? > > > but the same happened in my home-based network, rsync was 10 times > faster... > > I don't know details of HTTP-replica, it could be base64 or something > like > > that; RAM-buffer, flush to disk, etc. > > The HTTP replication is using binary. > If you look here, it was benchmarked to be nearly as fast as rsync: > http://wiki.apache.org/solr/SolrReplication > > It does do a fsync to make sure that the files are on disk after > downloading, but that shouldn't make too much difference. > > -Yonik > http://www.lucidimagination.com
