I like to use the linux utility sar (system activity reporter (?))<\/p>\n
I gives a fast and quite complete overview over the performance of a linux system.
\nSAR has a lot of possibilitys. I just highlight a few of them to remember how the syntax is \ud83d\ude42<\/p>\n
CPU information of today<\/strong> 12:00:01 AM CPU %user %nice %system %iowait %steal %idle CPU information of day 24 in this month<\/strong> 12:00:01 AM CPU %user %nice %system %iowait %steal %idle CPU information from the 24th of this month between 06:00:00 and 07:00:00<\/strong> 06:00:00 AM CPU %user %nice %system %iowait %steal %idle Swap used on the 24th of this month between 06:00:00 and 07:00:00<\/strong> 06:00:00 AM kbswpfree kbswpused %swpused kbswpcad %swpcad I like to use the linux utility sar (system activity reporter (?)) I gives a fast and quite complete overview over the performance of a linux system. SAR has a lot of possibilitys. I just highlight a few of them to remember how the syntax is \ud83d\ude42 CPU information of today oracle@lqas4342:~$sar Linux 4.18.0-425.13.1.el8_7.x86_64 (lqas4342.mod.nl) […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[56],"tags":[58,90],"class_list":["post-522","post","type-post","status-publish","format-standard","hentry","category-linux","tag-linux","tag-performance"],"_links":{"self":[{"href":"https:\/\/maboc.nl\/index.php?rest_route=\/wp\/v2\/posts\/522","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/maboc.nl\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/maboc.nl\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/maboc.nl\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/maboc.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=522"}],"version-history":[{"count":6,"href":"https:\/\/maboc.nl\/index.php?rest_route=\/wp\/v2\/posts\/522\/revisions"}],"predecessor-version":[{"id":529,"href":"https:\/\/maboc.nl\/index.php?rest_route=\/wp\/v2\/posts\/522\/revisions\/529"}],"wp:attachment":[{"href":"https:\/\/maboc.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=522"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/maboc.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=522"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/maboc.nl\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=522"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n
\noracle@lqas4342:~$sar
\nLinux 4.18.0-425.13.1.el8_7.x86_64 (lqas4342.mod.nl) 04\/26\/2023 _x86_64_ (4 CPU)<\/p>\n
\n12:00:03 AM all 25.22 0.00 1.09 0.00 0.00 73.69
\n12:10:01 AM all 25.39 0.00 0.58 0.23 0.00 73.81
\n12:10:14 AM all 25.06 0.00 0.45 0.17 0.00 74.32
\n12:20:01 AM all 25.28 0.00 0.56 0.16 0.00 74.01
\n12:20:06 AM all 25.12 0.00 0.60 0.05 0.00 74.23
\n12:30:01 AM all 25.13 0.00 0.55 0.55 0.00 73.77
\n12:30:01 AM all 24.89 0.00 1.31 0.44 0.00 73.36
\n12:40:01 AM all 25.19 0.00 0.43 0.13 0.00 74.25
\n12:40:06 AM all 25.08 0.00 0.44 0.00 0.00 74.48
\n12:50:01 AM all 25.14 0.01 0.42 0.13 0.00 74.29
\n12:50:57 AM all 25.07 0.00 0.36 0.03 0.00 74.54
\n01:00:01 AM all 25.15 0.00 0.44 0.08 0.00 74.33
\n01:00:01 AM all 26.02 0.00 0.81 0.41 0.00 72.76
\n...
\n...
\n<\/code><\/p>\n
\n
\noracle@lqas4342:~$sar -f \/var\/log\/sa\/sa24
\nLinux 4.18.0-425.13.1.el8_7.x86_64 (lqas4342.mod.nl) 04\/24\/2023 _x86_64_ (4 CPU)<\/p>\n
\n12:10:00 AM all 25.30 0.00 5.56 23.95 0.00 45.19
\n12:10:01 AM all 33.78 0.00 9.36 15.05 0.00 41.81
\n12:20:00 AM all 41.13 0.00 7.52 5.40 0.00 45.95
\n12:20:01 AM all 45.91 0.00 3.96 8.44 0.00 41.69
\n12:30:00 AM all 28.38 0.00 8.52 7.51 0.00 55.58
\n12:30:01 AM all 20.84 0.00 23.28 45.01 0.00 10.86
\n12:40:00 AM all 16.69 0.00 1.73 4.52 0.00 77.06
\n12:40:01 AM all 3.89 0.00 0.74 0.19 0.00 95.19
\n12:50:00 AM all 19.94 0.00 7.36 13.20 0.00 59.50
\n12:50:01 AM all 25.39 0.00 9.67 33.85 0.00 31.09
\n01:00:00 AM all 19.85 0.04 5.59 12.16 0.00 62.36
\n01:00:01 AM all 10.81 0.00 2.54 3.97 0.00 82.67
\n...
\n...
\n<\/code><\/p>\n
\noracle@lqas4342:~$sar -f \/var\/log\/sa\/sa24 -s 06:00:00 -e 07:00:00
\nLinux 4.18.0-425.13.1.el8_7.x86_64 (lqas4342.mod.nl) 04\/24\/2023 _x86_64_ (4 CPU)<\/p>\n
\n06:00:01 AM all 17.12 0.00 9.35 22.16 0.00 51.37
\n06:10:00 AM all 53.08 0.00 10.88 32.53 0.00 3.51
\n06:10:01 AM all 59.06 0.00 13.15 24.97 0.00 2.82
\n06:20:00 AM all 62.68 0.00 16.42 15.40 0.00 5.50
\n06:20:02 AM all 73.13 0.00 26.87 0.00 0.00 0.00
\n06:30:00 AM all 74.44 0.00 25.56 0.00 0.00 0.00
\n06:30:02 AM all 72.73 0.00 27.27 0.00 0.00 0.00
\n06:40:00 AM all 75.66 0.00 24.34 0.00 0.00 0.00
\n06:40:01 AM all 85.00 0.00 15.00 0.00 0.00 0.00
\n06:50:00 AM all 74.93 0.02 21.55 2.70 0.00 0.81
\n06:50:01 AM all 56.05 0.00 30.62 12.35 0.00 0.99
\n07:00:00 AM all 60.06 0.00 22.33 14.32 0.00 3.29
\nAverage: all 66.81 0.00 20.18 10.81 0.00 2.20
\noracle@lqas4342:~$
\n<\/code><\/p>\n
\noracle@lqas4342:~$sar -f \/var\/log\/sa\/sa24 -s 06:00:00 -e 07:00:00 -S
\nLinux 4.18.0-425.13.1.el8_7.x86_64 (lqas4342.mod.nl) 04\/24\/2023 _x86_64_ (4 CPU)<\/p>\n
\n06:00:01 AM 51331640 16821696 24.68 1166192 6.93
\n06:10:00 AM 52516124 15637212 22.94 2720180 17.40
\n06:10:01 AM 52503528 15649808 22.96 2726792 17.42
\n06:20:00 AM 48136600 20016736 29.37 1682284 8.40
\n06:20:02 AM 48132824 20020512 29.38 1670084 8.34
\n06:30:00 AM 46562076 21591260 31.68 629528 2.92
\n06:30:02 AM 46561596 21591740 31.68 630404 2.92
\n06:40:00 AM 45888328 22265008 32.67 1140120 5.12
\n06:40:01 AM 45889096 22264240 32.67 1140388 5.12
\n06:50:00 AM 45222132 22931204 33.65 556244 2.43
\n06:50:01 AM 45195144 22958192 33.69 554808 2.42
\n07:00:00 AM 42441544 25711792 37.73 858356 3.34
\nAverage: 47531719 20621617 30.26 1289615 6.25
\noracle@lqas4342:~$
\n<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"