Hello! This is the kernel that I am using Linux 4.16.13-1.el7.elrepo.x86_64 #1 SMP Wed May 30 14:31:51 EDT 2018 x86_64 x86_64 x86_64 GNU/Linux
Best, Sergio Il giorno lun 21 ott 2019 alle ore 07:30 Reid Pinchback < rpinchb...@tripadvisor.com> ha scritto: > I don't know which distro and version you are using, but watch out for > surprises in what vm.swappiness=0 means. In older kernels it means "only > use swap when desperate". I believe that newer kernels changed to have 1 > mean that, and 0 means to always use the oomkiller. Neither situation is > strictly good or bad, what matters is what you intend the system behavior > to be in comparison with whatever monitoring/alerting you have put in place. > > R > > > On 10/18/19, 9:04 PM, "Sergio Bilello" <lapostadiser...@gmail.com> wrote: > > Message from External Sender > > Hello everyone! > > > > Do you have any setting that you would change or tweak from the below > list? > > > > sudo cat /proc/4379/limits > > Limit Soft Limit Hard Limit > Units > > Max cpu time unlimited unlimited > seconds > > Max file size unlimited unlimited > bytes > > Max data size unlimited unlimited > bytes > > Max stack size unlimited unlimited > bytes > > Max core file size unlimited unlimited > bytes > > Max resident set unlimited unlimited > bytes > > Max processes 32768 32768 > processes > > Max open files 1048576 1048576 > files > > Max locked memory unlimited unlimited > bytes > > Max address space unlimited unlimited > bytes > > Max file locks unlimited unlimited > locks > > Max pending signals unlimited unlimited > signals > > Max msgqueue size unlimited unlimited > bytes > > Max nice priority 0 0 > > Max realtime priority 0 0 > > Max realtime timeout unlimited unlimited us > > > > These are the sysctl settings > > default['cassandra']['sysctl'] = { > > 'net.ipv4.tcp_keepalive_time' => 60, > > 'net.ipv4.tcp_keepalive_probes' => 3, > > 'net.ipv4.tcp_keepalive_intvl' => 10, > > 'net.core.rmem_max' => 16777216, > > 'net.core.wmem_max' => 16777216, > > 'net.core.rmem_default' => 16777216, > > 'net.core.wmem_default' => 16777216, > > 'net.core.optmem_max' => 40960, > > 'net.ipv4.tcp_rmem' => '4096 87380 16777216', > > 'net.ipv4.tcp_wmem' => '4096 65536 16777216', > > 'net.ipv4.ip_local_port_range' => '10000 65535', > > 'net.ipv4.tcp_window_scaling' => 1, > > 'net.core.netdev_max_backlog' => 2500, > > 'net.core.somaxconn' => 65000, > > 'vm.max_map_count' => 1048575, > > 'vm.swappiness' => 0 > > } > > > > Am I missing something else? > > > > Do you have any experience to configure CENTOS 7 > > for > > JAVA HUGE PAGES > > > https://urldefense.proofpoint.com/v2/url?u=https-3A__docs.datastax.com_en_dse_5.1_dse-2Dadmin_datastax-5Fenterprise_config_configRecommendedSettings.html-23CheckJavaHugepagessettings&d=DwIBaQ&c=9Hv6XPedRSA-5PSECC38X80c1h60_XWA4z1k_R1pROA&r=OIgB3poYhzp3_A7WgD7iBCnsJaYmspOa2okNpf6uqWc&m=zke-WpkD1c6Qt1cz8mJG0ZQ37h8kezqknMSnerQhXuU&s=b6lGdbtv1SN9opBsIOFRT6IX6BroMW-8Tudk9qEh3bI&e= > > > > OPTIMIZE SSD > > > https://urldefense.proofpoint.com/v2/url?u=https-3A__docs.datastax.com_en_dse_5.1_dse-2Dadmin_datastax-5Fenterprise_config_configRecommendedSettings.html-23OptimizeSSDs&d=DwIBaQ&c=9Hv6XPedRSA-5PSECC38X80c1h60_XWA4z1k_R1pROA&r=OIgB3poYhzp3_A7WgD7iBCnsJaYmspOa2okNpf6uqWc&m=zke-WpkD1c6Qt1cz8mJG0ZQ37h8kezqknMSnerQhXuU&s=c0S3S3V_0YHVMx2I-pyOh24MiQs1D-L73JytaSw648M&e= > > > > > https://urldefense.proofpoint.com/v2/url?u=https-3A__docs.datastax.com_en_dse_5.1_dse-2Dadmin_datastax-5Fenterprise_config_configRecommendedSettings.html&d=DwIBaQ&c=9Hv6XPedRSA-5PSECC38X80c1h60_XWA4z1k_R1pROA&r=OIgB3poYhzp3_A7WgD7iBCnsJaYmspOa2okNpf6uqWc&m=zke-WpkD1c6Qt1cz8mJG0ZQ37h8kezqknMSnerQhXuU&s=PZFG6SXF6dL5LRJ-aUoidHnnLGpKPbpxdKstM8M9JMk&e= > > > > We are using AWS i3.xlarge instances > > > > Thanks, > > > > Sergio > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org > > For additional commands, e-mail: user-h...@cassandra.apache.org > > > > > >