{"id":389,"date":"2017-06-04T15:35:58","date_gmt":"2017-06-04T12:35:58","guid":{"rendered":"https:\/\/galaxydata.ru\/community\/?p=389"},"modified":"2025-07-23T00:06:15","modified_gmt":"2025-07-22T21:06:15","slug":"nizkaya-proizvoditelnost-virtualn","status":"publish","type":"post","link":"https:\/\/galaxydata.ru\/community\/nizkaya-proizvoditelnost-virtualn-389","title":{"rendered":"\u041d\u0438\u0437\u043a\u0430\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432 QEMU-KVM, \u0432\u044b\u0441\u043e\u043a\u0438\u0439 I\/O Wait 99% \u043d\u0430 CentOS 7"},"content":{"rendered":"<p>\u0412 \u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u0438 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0438 \u043f\u0435\u0440\u0435\u0445\u043e\u0434\u0430 \u043d\u0430 CentOS \u043d\u0430 \u043d\u043e\u0432\u0443\u044e \u0432\u0435\u0440\u0441\u0438\u044e 7, \u043c\u044b \u043d\u0430 dedicated \u0441\u0435\u0440\u0432\u0435\u0440\u0430\u0445 \u0447\u0430\u0441\u0442\u043e \u043d\u0430\u0447\u0430\u043b\u0438 \u0441\u0442\u0430\u043b\u043a\u0438\u0432\u0430\u0442\u044c\u0441\u044f \u0441 \u0442\u043e\u0440\u043c\u043e\u0437\u0430\u043c\u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u043d\u0430 CentOS, \u043f\u0440\u0438 \u0442\u043e\u043c \u0447\u0442\u043e \u043c\u043e\u0449\u043d\u044b\u0439 \u043a\u043e\u043d\u0444\u0438\u0433, \u043d\u043e \u0432\u0441\u0435 \u0440\u0430\u0432\u043d\u043e I\/O 99% \u0438 \u043d\u0438\u0447\u0435\u0433\u043e \u00a0\u043d\u0435 \u0441\u0434\u0435\u043b\u0430\u0435\u0448\u044c \u0441 \u044d\u0442\u0438\u043c. \u041f\u0440\u043e\u0431\u043e\u0432\u0430\u043b\u0438 \u043c\u0435\u043d\u044f\u0442\u044c \u0438 \u0440\u0435\u0436\u0438\u043c\u044b \u0440\u0430\u0431\u043e\u0442\u044b PHP, \u043d\u0438\u0447\u0435\u0433\u043e \u043d\u0435 \u0434\u0430\u0432\u0430\u043b\u043e \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430, \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0435 \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0434\u043e\u043b\u0436\u043d\u043e \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c 150 \u0441\u0430\u0439\u0442\u043e\u0432\u00a0\u043b\u0435\u0433\u043a\u043e, \u0441 \u0442\u0440\u0443\u0434\u043e\u043c \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 20.<span id=\"more-4264\"><\/span><\/p>\n<p>\u041f\u0435\u0440\u0435\u043f\u0440\u043e\u0431\u043e\u0432\u0430\u043b\u0438 \u0432\u0441\u0435, \u0432 \u043f\u043e\u0438\u0441\u043a\u0430\u0445 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b, \u0438 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0438\u043b\u0438 \u0434\u043e\u0432\u043e\u043b\u044c\u043d\u043e \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u044b\u0439 \u0444\u0430\u043a\u0442, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0432\u043d\u0435\u0441\u043b\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 CentOS \u0432 \u043d\u043e\u0432\u043e\u0439 7 \u0432\u0435\u0440\u0441\u0438\u0438. \u041e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f, \u043e\u043d\u0438 \u0440\u0435\u0448\u0438\u043b\u0438 <strong>\u043f\u043e-\u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e\u00a0<\/strong>\u0441\u0442\u0430\u0432\u0438\u0442\u044c \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440 \u0432 \u044d\u043d\u0435\u0440\u0433\u043e\u0441\u0431\u0435\u0440\u0435\u0433\u0430\u044e\u0449\u0438\u0439 \u0440\u0435\u0436\u0438\u043c. \u043f\u0440\u043e\u0432\u0435\u0440\u0438\u0442\u044c \u0442\u0430\u043a \u043b\u0438 \u044d\u0442\u043e, \u043c\u043e\u0436\u043d\u043e \u0434\u043e\u0432\u043e\u043b\u044c\u043d\u043e \u043f\u0440\u043e\u0441\u0442\u043e, \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u0430\u0432\u0442\u043e\u0440\u0438\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u043f\u043e SSH \u043d\u0430 \u0441\u0432\u043e\u0435\u043c \u0441\u0435\u0440\u0432\u0435\u0440\u0435 \u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u043c\u0430\u043d\u0434\u0443:<\/p>\n<pre class=\"lang:sh decode:true \">cat \/sys\/devices\/system\/cpu\/cpu*\/cpufreq\/scaling_governor<\/pre>\n<p>\u0415\u0441\u043b\u0438 \u0412\u044b \u0432\u0438\u0434\u0438\u0442\u0435 \u0432\u043e\u0442 \u0442\u0430\u043a\u043e\u0439 \u0432\u043e\u0442 \u043e\u0442\u0432\u0435\u0442:<\/p>\n<pre class=\"lang:sh decode:true \">cat \/sys\/devices\/system\/cpu\/cpu*\/cpufreq\/scaling_governor<\/pre>\n<p><code>powersave<\/code><br \/>\n<code>powersave<\/code><br \/>\n<code>powersave<\/code><br \/>\n<code>powersave<\/code><\/p>\n<p>\u0415\u0441\u0442\u044c \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0435 \u0440\u0435\u0436\u0438\u043c\u044b \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430:<\/p>\n<ul>\n<li><strong>powersave<\/strong>\u00a0\u2014 \u044d\u043d\u0435\u0440\u0433\u043e\u0441\u0431\u0435\u0440\u0435\u0433\u0430\u044e\u0449\u0438\u0439 (\u043d\u0430\u0448\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430, \u0442\u043e\u0440\u043c\u043e\u0437\u0438\u0442 \u0432\u0441\u0435 \u0438 \u0443\u0436\u0430\u0441\u043d\u043e)<\/li>\n<li><strong>ondemand<\/strong>\u00a0\u2014 \u043c\u0435\u043d\u044f\u0435\u0442 \u0447\u0430\u0441\u0442\u043e\u0442\u0443 \u043f\u043e \u0442\u0440\u0435\u0431\u043e\u0432\u0430\u043d\u0438\u044e (\u043d\u043e \u043f\u043e\u0447\u0435\u043c\u0443 \u0432\u043e \u0432\u0440\u0435\u043c\u044f \u0440\u0435\u0437\u043a\u0438\u0445 \u0441\u043a\u0430\u0447\u043a\u043e\u0432 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u0437\u0430\u0431\u044b\u0432\u0430\u0435\u0442 \u044d\u0442\u043e \u0434\u0435\u043b\u0430\u0442\u044c)<\/li>\n<li><strong>performance<\/strong>\u00a0\u2014 \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u0430\u044f \u0447\u0430\u0441\u0442\u043e\u0442\u0430 \u0432\u0441\u0435\u0433\u0434\u0430<\/li>\n<\/ul>\n<p>\u0423\u0437\u043d\u0430\u0442\u044c \u0447\u0430\u0441\u0442\u043e\u0442\u0443 \u044f\u0434\u0435\u0440 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430:<\/p>\n<pre class=\"lang:sh decode:true \">grep -i mhz \/proc\/cpuinfo<\/pre>\n<p>&nbsp;<\/p>\n<p>\u041c\u043e\u0436\u043d\u043e \u043f\u043e\u043c\u0435\u043d\u044f\u0442\u044c \u0440\u0435\u0436\u0438\u043c \u0440\u0430\u0431\u043e\u0442\u044b \u043a\u043e\u043c\u0430\u043d\u0434\u043e\u0439:<\/p>\n<pre class=\"lang:sh decode:true \">cpupower frequency-set --governor performance<\/pre>\n<p>\u0415\u0441\u0442\u044c \u0438 \u0434\u0440\u0443\u0433\u0438\u0435, \u043d\u043e \u043e\u043d\u0438 \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0437\u0430\u043c\u0435\u0434\u043b\u044f\u044e\u0442 \u0440\u0430\u0431\u043e\u0442\u0443 \u0412\u0430\u0448\u0435\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430. \u0427\u0442\u043e \u0431\u044b \u0440\u0435\u0448\u0438\u0442\u044c \u044d\u0442\u0443 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443 \u0440\u0430\u0437 \u0438 \u043d\u0430\u0432\u0441\u0435\u0433\u0434\u0430 \u0438 \u043d\u0430\u0441\u043b\u0430\u0436\u0434\u0430\u0442\u044c\u0441\u044f \u0431\u044b\u0441\u0442\u0440\u043e\u0439 \u0440\u0430\u0431\u043e\u0442\u043e\u0439 \u0441\u0435\u0440\u0432\u0435\u0440\u0430, \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0443\u044e \u043a\u043e\u043c\u0430\u043d\u0434\u0443:<\/p>\n<pre class=\"lang:sh decode:true \">tuned-adm active\r\ntuned-adm profile throughput-performance<\/pre>\n<p>\u0418 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440 \u043d\u0430\u0447\u043d\u0435\u0442 \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u043d\u0430 \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0439 \u0447\u0430\u0441\u0442\u043e\u0442\u0435, \u0412\u044b \u0441\u0440\u0430\u0437\u0443 \u0436\u0435 \u0443\u0432\u0438\u0434\u0438\u0442\u0435 \u043f\u0430\u0434\u0435\u043d\u0438\u0435 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u043d\u0430 20-40%.<\/p>\n<p>\u0415\u0441\u043b\u0438 \u0443 \u0412\u0430\u0441 \u0432\u043e\u0437\u043d\u0438\u043a\u043b\u0438 \u0441\u043b\u043e\u0436\u043d\u043e\u0441\u0442\u0438, \u0412\u044b \u0432\u0441\u0435\u0433\u0434\u0430 \u043c\u043e\u0436\u0435\u0442\u0435 \u043e\u0431\u0440\u0430\u0442\u0438\u0442\u0441\u044f \u043a \u043d\u0430\u043c, \u0437\u0430 \u043f\u043e\u043c\u043e\u0449\u044c\u044e.<\/p>\n<p>\u041d\u0430 Debian\/Ubuntu \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u043d\u0443\u0436\u043d\u043e \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u044c:<\/p>\n<pre class=\"lang:sh decode:true \">apt install linux-cpupower\r\napt install cpufrequtils<\/pre>\n<p>\u041d\u0430 CentOS\/Redhat<\/p>\n<pre class=\"lang:sh decode:true \">yum install cpupowerutils<\/pre>\n<p>VIRTUALIZATION TUNING AND OPTIMIZATION GUIDE<\/p>\n<p><a href=\"https:\/\/access.redhat.com\/documentation\/en-us\/red_hat_enterprise_linux\/6\/html-single\/virtualization_tuning_and_optimization_guide\/index\">https:\/\/access.redhat.com\/documentation\/en-us\/red_hat_enterprise_linux\/6\/html-single\/virtualization_tuning_and_optimization_guide\/index<\/a><\/p>\n<p>Performance Tuning in centos7<\/p>\n<p>BIOS setting<br \/>\nEnable X2APIC<\/p>\n<p>cpu setting<br \/>\n1<br \/>\n2<br \/>\n3<br \/>\n4<br \/>\n5<br \/>\n6<br \/>\n7<br \/>\ntuned-adm profile throughput-performance<br \/>\ntuned-adm active<br \/>\ncpupower idle-set -d 4<br \/>\ncpupower idle-set -d 3<br \/>\ncpupower idle-set -d 2<br \/>\ncpupower frequency-set -g performance<br \/>\n# for more info \/usr\/lib\/tuned\/throughput-performance\/tuned.conf<br \/>\nsysctl<br \/>\n1<br \/>\n2<br \/>\n3<br \/>\n4<br \/>\n5<br \/>\n6<br \/>\n7<br \/>\n8<br \/>\n9<br \/>\n10<br \/>\n11<br \/>\n12<br \/>\n13<br \/>\n14<br \/>\n15<br \/>\n16<br \/>\n17<br \/>\nkernel.numa_balancing=0<\/p>\n<p>net.core.netdev_max_backlog = 300000<br \/>\nnet.ipv4.tcp_sack = 0<br \/>\nnet.core.netdev_budget=600<br \/>\nnet.ipv4.tcp_timestamps=1<br \/>\nnet.ipv4.tcp_low_latency=1<br \/>\nnet.ipv4.tcp_rmem=16384 349520 16777216<br \/>\nnet.ipv4.tcp_wmem=16384 349520 16777216<br \/>\nnet.ipv4.tcp_mem = 2314209 3085613 4628418<br \/>\nnet.core.rmem_max=16777216<br \/>\nnet.core.wmem_max=16777216<br \/>\nnet.core.somaxconn=2048<br \/>\nnet.ipv4.tcp_adv_win_scale=1<br \/>\nnet.ipv4.tcp_window_scaling = 1<br \/>\n#UDP buffer<br \/>\nnet.core.rmem_max=16777216<br \/>\nDual port 25GbE<br \/>\nNIC settting<br \/>\n1<br \/>\n2<br \/>\n3<br \/>\n4<br \/>\n5<br \/>\n6<br \/>\n7<br \/>\n8<br \/>\nethtool -C enp131s0f0 adaptive-rx off rx-usecs 0 rx-frames 0<br \/>\nethtool -G enp131s0f0 rx 8192 tx 8192<br \/>\nethtool -G enp131s0f0 rx 8192 tx 8192<br \/>\nethtool -N enp131s0f0 rx-flow-hash udp4 sdfn<br \/>\nip link set dev enp131s0f0 txqueuelen 1500<br \/>\nip link set dev enp131s0f1 txqueuelen 1500<br \/>\nip link set dev bond0 txqueuelen 3000<br \/>\nMTU=9000<br \/>\nBond info<br \/>\n1<br \/>\n2<br \/>\n3<br \/>\n4<br \/>\n5<br \/>\n6<br \/>\n7<br \/>\n8<br \/>\n9<br \/>\n10<br \/>\n11<br \/>\n12<br \/>\n13<br \/>\n14<br \/>\n15<br \/>\n16<br \/>\n17<br \/>\n18<br \/>\n19<br \/>\n20<br \/>\n21<br \/>\n22<br \/>\n23<br \/>\n24<br \/>\n25<br \/>\n26<br \/>\n27<br \/>\n28<br \/>\n29<br \/>\n30<br \/>\n31<br \/>\n32<br \/>\n33<br \/>\n34<br \/>\n35<br \/>\n36<br \/>\n37<br \/>\n38<br \/>\n39<br \/>\n40<br \/>\n41<br \/>\n42<br \/>\n43<br \/>\n44<br \/>\n45<br \/>\n46<br \/>\n47<br \/>\n48<br \/>\n49<br \/>\n50<br \/>\n51<br \/>\n52<br \/>\n53<br \/>\n54<br \/>\n55<br \/>\n56<br \/>\n57<br \/>\n58<br \/>\n59<br \/>\n60<br \/>\n61<br \/>\n62<br \/>\n63<br \/>\n64<br \/>\n65<br \/>\n66<br \/>\n67<br \/>\n68<br \/>\n69<br \/>\n70<br \/>\n71<br \/>\n72<br \/>\n73<br \/>\n74<br \/>\n75<br \/>\nEthernet Channel Bonding Driver: v3.7.1 (April 27, 2011)<\/p>\n<p>Bonding Mode: IEEE 802.3ad Dynamic link aggregation<br \/>\nTransmit Hash Policy: layer2 (0)<br \/>\nMII Status: up<br \/>\nMII Polling Interval (ms): 100<br \/>\nUp Delay (ms): 0<br \/>\nDown Delay (ms): 0<\/p>\n<p>802.3ad info<br \/>\nLACP rate: slow<br \/>\nMin links: 0<br \/>\nAggregator selection policy (ad_select): stable<br \/>\nSystem priority: 65535<br \/>\nSystem MAC address: 7c:fe:90:de:08:38<br \/>\nActive Aggregator Info:<br \/>\nAggregator ID: 1<br \/>\nNumber of ports: 2<br \/>\nActor Key: 1<br \/>\nPartner Key: 449<br \/>\nPartner Mac Address: 38:bc:01:79:33:51<\/p>\n<p>Slave Interface: enp131s0f0<br \/>\nMII Status: up<br \/>\nSpeed: 25000 Mbps<br \/>\nDuplex: full<br \/>\nLink Failure Count: 0<br \/>\nPermanent HW addr: 7c:fe:90:de:08:38<br \/>\nSlave queue ID: 0<br \/>\nAggregator ID: 1<br \/>\nActor Churn State: none<br \/>\nPartner Churn State: none<br \/>\nActor Churned Count: 0<br \/>\nPartner Churned Count: 0<br \/>\ndetails actor lacp pdu:<br \/>\nsystem priority: 65535<br \/>\nsystem mac address: 7c:fe:90:de:08:38<br \/>\nport key: 1<br \/>\nport priority: 255<br \/>\nport number: 1<br \/>\nport state: 61<br \/>\ndetails partner lacp pdu:<br \/>\nsystem priority: 32768<br \/>\nsystem mac address: 38:bc:01:79:33:51<br \/>\noper key: 449<br \/>\nport priority: 32768<br \/>\nport number: 1<br \/>\nport state: 61<\/p>\n<p>Slave Interface: enp131s0f1<br \/>\nMII Status: up<br \/>\nSpeed: 25000 Mbps<br \/>\nDuplex: full<br \/>\nLink Failure Count: 0<br \/>\nPermanent HW addr: 7c:fe:90:de:08:39<br \/>\nSlave queue ID: 0<br \/>\nAggregator ID: 1<br \/>\nActor Churn State: none<br \/>\nPartner Churn State: none<br \/>\nActor Churned Count: 0<br \/>\nPartner Churned Count: 0<br \/>\ndetails actor lacp pdu:<br \/>\nsystem priority: 65535<br \/>\nsystem mac address: 7c:fe:90:de:08:38<br \/>\nport key: 1<br \/>\nport priority: 255<br \/>\nport number: 2<br \/>\nport state: 61<br \/>\ndetails partner lacp pdu:<br \/>\nsystem priority: 32768<br \/>\nsystem mac address: 38:bc:01:79:33:51<br \/>\noper key: 449<br \/>\nport priority: 32768<br \/>\nport number: 97<br \/>\nport state: 61<br \/>\nGet CPU and PCIE adapter topology<br \/>\nPin different cpu cores to different adapter<br \/>\nDisable irqbalance<\/p>\n<p>1<br \/>\n2<br \/>\n3<br \/>\n4<br \/>\n5<br \/>\n6<br \/>\n7<br \/>\n8<br \/>\n9<br \/>\n10<br \/>\n11<br \/>\n12<br \/>\n13<br \/>\n14<br \/>\n15<br \/>\n16<br \/>\n17<br \/>\n18<br \/>\n19<br \/>\n20<br \/>\n21<br \/>\n22<br \/>\n23<br \/>\n24<br \/>\n25<br \/>\n26<br \/>\n27<br \/>\n28<br \/>\n29<br \/>\nEnable HT<br \/>\n0,1,10,11,2,24,25,26,27,28,29,3,30,31,32,33,34,35,4,5,6,7,8,9,<br \/>\n12,13,14,15,16,17,18,19,20,21,22,23,36,37,38,39,40,41,42,43,44,45,46,47,<br \/>\ncpu numa node number is: 2<br \/>\ncpu-hex cpu-hex numa_node<br \/>\n200 200000000 0<br \/>\n40 40000000 0<br \/>\n8 8000000 0<br \/>\n1 1000000 0<br \/>\n10 10000000 0<br \/>\n2 2000000 0<br \/>\n20 20000000 0<br \/>\n80 80000000 0<br \/>\n400 400000000 0<br \/>\n100 100000000 0<br \/>\n4 4000000 0<br \/>\n800 800000000 0<br \/>\n400000 400000000000 1<br \/>\n8000 8000000000 1<br \/>\n800000 800000000000 1<br \/>\n20000 20000000000 1<br \/>\n40000 40000000000 1<br \/>\n1000 1000000000 1<br \/>\n100000 100000000000 1<br \/>\n80000 80000000000 1<br \/>\n10000 10000000000 1<br \/>\n2000 2000000000 1<br \/>\n200000 200000000000 1<br \/>\n4000 4000000000 1<br \/>\nNuma node0<br \/>\n1<br \/>\n2<br \/>\n3<br \/>\n02:00.0 Non-Volatile memory controller: Intel Corporation Device 0a53 (rev 02)<br \/>\n03:00.0 Non-Volatile memory controller: Intel Corporation Device 0a53 (rev 02)<br \/>\n04:00.0 Serial Attached SCSI controller: LSI Logic \/ Symbios Logic SAS3008 PCI-Express Fusion-MPT SAS-3<br \/>\nNuma node1<br \/>\nNext time , I will change etheret adapter to numa 0<\/p>\n<p>1<br \/>\n2<br \/>\n3<br \/>\n4<br \/>\n5<br \/>\n83:00.0 Ethernet controller: Mellanox Technologies MT27710 Family [ConnectX-4 Lx]<br \/>\n83:00.1 Ethernet controller: Mellanox Technologies MT27710 Family [ConnectX-4 Lx]<br \/>\n81:00.0 Serial Attached SCSI controller: LSI Logic \/ Symbios Logic SAS3008 PCI-Express Fusion-MPT SAS-3 (rev 02)<br \/>\n82:00.0 Serial Attached SCSI controller: LSI Logic \/ Symbios Logic SAS3008 PCI-Express Fusion-MPT SAS-3 (rev 02)<br \/>\n84:00.0 Serial Attached SCSI controller: LSI Logic \/ Symbios Logic SAS3008 PCI-Express Fusion-MPT SAS-3 (rev 02)<br \/>\nmpt3sas<br \/>\n1<br \/>\n2<br \/>\n$ cat \/etc\/modprobe.d\/mpt3sas.conf<br \/>\noptions mpt3sas max_msix_vectors=6<br \/>\nstorage device setting<br \/>\n1<br \/>\n2<br \/>\n3<br \/>\n4<br \/>\n5<br \/>\n6<br \/>\n7<br \/>\n8<br \/>\n9<br \/>\nHDD \/sys\/block\/*\/queue\/scheduler deadline<br \/>\nSSD \/sys\/block\/*\/queue\/scheduler noop<br \/>\n\/sys\/block\/*\/queue\/nr_requests 1024<br \/>\n\/sys\/block\/*\/device\/queue_depth 256 #For Throughput, for latency you could reduece it<br \/>\n\/sys\/block\/*\/device\/scsi_disk\/*\/cache_type write back #For throughput<\/p>\n<p>\/sys\/block\/*\/device\/scsi_disk\/*\/cache_type write through #For latency<br \/>\nrr_min_io_rq \/etc\/multipath.conf 1 #For latency<br \/>\n\/sys\/block\/*\/queue\/nomerges 1 #For latency<br \/>\nmy scripts<br \/>\n.\/pin_cpu.sh SAS3008 Mellanox Non-Volatile<\/p>\n<p>http:\/\/homerl.github.io\/2017\/05\/24\/Performance-Tuning-in-centos7\/<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0412 \u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u0438 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0438 \u043f\u0435\u0440\u0435\u0445\u043e\u0434\u0430 \u043d\u0430 CentOS \u043d\u0430 \u043d\u043e\u0432\u0443\u044e \u0432\u0435\u0440\u0441\u0438\u044e 7, \u043c\u044b \u043d\u0430 dedicated \u0441\u0435\u0440\u0432\u0435\u0440\u0430\u0445 \u0447\u0430\u0441\u0442\u043e \u043d\u0430\u0447\u0430\u043b\u0438 \u0441\u0442\u0430\u043b\u043a\u0438\u0432\u0430\u0442\u044c\u0441\u044f \u0441 \u0442\u043e\u0440\u043c\u043e\u0437\u0430\u043c\u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u043d\u0430 CentOS, \u043f\u0440\u0438 \u0442\u043e\u043c \u0447\u0442\u043e \u043c\u043e\u0449\u043d\u044b\u0439 \u043a\u043e\u043d\u0444\u0438\u0433, \u043d\u043e \u0432\u0441\u0435&hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[4,101],"class_list":["post-389","post","type-post","status-publish","format-standard","hentry","category-linux","tag-centos","tag-centos-7"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.4 (Yoast SEO v25.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u041d\u0438\u0437\u043a\u0430\u044f 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\u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0438 \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u0438\u0435 \u0431\u044b\u0441\u0442\u0440\u043e\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u0432\u0432\u043e\u0434\u0430-\u0432\u044b\u0432\u043e\u0434\u0430.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/galaxydata.ru\/community\/nizkaya-proizvoditelnost-virtualn-389\" \/>\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u041d\u0438\u0437\u043a\u0430\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432 QEMU-KVM, \u0432\u044b\u0441\u043e\u043a\u0438\u0439 I\/O Wait 99% \u043d\u0430 CentOS 7\" \/>\n<meta property=\"og:description\" content=\"\u0423\u0432\u0435\u043b\u0438\u0447\u0438\u0432\u0430\u0435\u043c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432 QEMU-KVM \u043d\u0430 CentOS 7: \u0431\u043e\u0440\u044c\u0431\u0430 \u0441 \u0432\u044b\u0441\u043e\u043a\u0438\u043c \u043f\u043e\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u0435\u043c I\/O wait 99%, \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u044f \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0438 \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u0438\u0435 \u0431\u044b\u0441\u0442\u0440\u043e\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 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