This is ridiculously slow for that hardware setup. Sounds like you benchmark with a single thread and / or sync queries or very large writes. A setup like this should be easily able to handle tens of thousands of writes / s
2016-11-23 8:02 GMT+01:00 Jonathan Haddad <j...@jonhaddad.com>: > How are you benchmarking that? > On Tue, Nov 22, 2016 at 9:16 PM Abhishek Kumar Maheshwari < > abhishek.maheshw...@timesinternet.in> wrote: > >> Hi, >> >> >> >> I have 8 servers in my Cassandra Cluster. Each server has 64 GB ram and >> 40 Cores and 8 SSD. Currently I have below config in Cassandra.yaml: >> >> >> >> concurrent_reads: 32 >> >> concurrent_writes: 64 >> >> concurrent_counter_writes: 32 >> >> compaction_throughput_mb_per_sec: 32 >> >> concurrent_compactors: 8 >> >> >> >> With this configuration, I can write 1700 Request/Sec per server. >> >> >> >> But our desired write performance is 3000-4000 Request/Sec per server. As >> per my Understanding Max value for these parameters can be as below: >> >> concurrent_reads: 32 >> >> concurrent_writes: 128(8*16 Corew) >> >> concurrent_counter_writes: 32 >> >> compaction_throughput_mb_per_sec: 128 >> >> concurrent_compactors: 8 or 16 (as I have 8 SSD and 16 core reserve for >> this) >> >> >> >> Please let me know this is fine or I need to tune some other parameters >> for speedup write. >> >> >> >> >> >> *Thanks & Regards,* >> *Abhishek Kumar Maheshwari* >> *+91- 9999805591 <%2B91-%C2%A09999805591> (Mobile)* >> >> Times Internet Ltd. | A Times of India Group Company >> >> FC - 6, Sector 16A, Film City, Noida, U.P. 201301 | INDIA >> >> *P** Please do not print this email unless it is absolutely necessary. >> Spread environmental awareness.* >> >> >> Education gets Exciting with IIM Kozhikode Executive Post Graduate >> Programme in Management - 2 years (AMBA accredited with full benefits of >> IIMK Alumni status). Brought to you by IIMK in association with TSW, an >> Executive Education initiative from The Times of India Group. Learn more: >> www.timestsw.com >> > -- Benjamin Roth Prokurist Jaumo GmbH · www.jaumo.com Wehrstraße 46 · 73035 Göppingen · Germany Phone +49 7161 304880-6 · Fax +49 7161 304880-1 AG Ulm · HRB 731058 · Managing Director: Jens Kammerer
