It seems Cassandra creates a big pile of threads for different tasks, I didn’t step into details, but I’m pretty sure it has more than 40 threads with default setting on a 2-nodes cluster. So multi core may not be a concern, as all these threads can run on different cores to fully utilize the CPU resource.<\/p>\n
However, my tests show something really worry me – multi-node cluster performs worse than single node (due to inter-node communication I believe), and multi-cores deployment is slower than single-core deployment (this is something I don’t quite understand, may be because of L1\/L2 cache?).<\/p>\n
I need some hardware to test it as well, as VM is not that good for this kind of test. Then I suddenly recall I still have some 8-core\/16G boxes in company sitting idle there, I can use one or two to do the test for sure \ud83d\ude09<\/p>\n","protected":false},"excerpt":{"rendered":"
It seems Cassandra creates a big pile of threads for different tasks, I didn’t step into details, but I’m pretty sure it has more than 40 threads with default setting on a 2-nodes cluster. So multi core may not be a concern, as all these threads can run on different cores to fully utilize the […]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[155,165,164],"_links":{"self":[{"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/posts\/900"}],"collection":[{"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/comments?post=900"}],"version-history":[{"count":2,"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/posts\/900\/revisions"}],"predecessor-version":[{"id":902,"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/posts\/900\/revisions\/902"}],"wp:attachment":[{"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/media?parent=900"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/categories?post=900"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xiehang.com\/blog\/wp-json\/wp\/v2\/tags?post=900"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}