why cassanra max is 20000/s on a node ?

2015-11-05 Thread
PTS -XX:+UseTLAB" JVM_OPTS="$JVM_OPTS -XX:CompileCommandFile=$CASSANDRA_CONF/hotspot_compiler" JVM_OPTS="$JVM_OPTS -XX:CMSWaitDuration=60000" memtable_heap_space_in_mb: 1024 memtable_offheap_space_in_mb: 10240 memtable_cleanup_threshold: 0.55 memtable_allocation_type

Re: Re: why cassanra max is 20000/s on a node ?

2015-11-05 Thread
x27;s total throughput is above 200,000 /s . 郝加来 From: Jack Krupansky Date: 2015-11-05 23:24 To: user@cassandra.apache.org Subject: Re: why cassanra max is 2/s on a node ? I don't know what current numbers are, but last year the idea of getting 1 million writes per second on a 96

Re: Re: why cassanra max is 20000/s on a node ?

2015-11-05 Thread
right , but wo want a node 's throught is above million , so if the system hava fifty table , a single table can achive 2/s . 郝加来 From: Eric Stevens Date: 2015-11-05 23:56 To: user@cassandra.apache.org Subject: Re: why cassanra max is 2/s on a node ? > 512G memory , 128

Re: Re: why cassanra max is 20000/s on a node ?

2015-11-05 Thread
and b ,the throught on table ' a is drop , and a + b 'sum is the 20000/s . 郝加来 From: Graham Sanderson Date: 2015-11-06 11:06 To: user@cassandra.apache.org Subject: Re: why cassanra max is 2/s on a node ? Agreed too. It also matters what you are inserting… if you are inserting t

Re: Re: Too many open files Cassandra 2.1.11.872

2015-11-06 Thread
many connection ? 郝加来 From: Jason Lewis Date: 2015-11-07 10:38 To: user@cassandra.apache.org Subject: Re: Too many open files Cassandra 2.1.11.872 cat /proc/5980/limits Limit Soft Limit Hard Limit Units Max cpu time unlimited