"si / software interrupts" value was 0.0 and right now with all working fine, continues to be 0.0 On Fri, Jul 3, 2020 at 11:23 AM Strahil Nikolov <hunter86_bg at yahoo.com> wrote: > Hi Erick, > > what was the value of 'si' in top ? > > Best Regards, > Strahil Nikolov > > На 3 юли 2020 г. 18:48:30 GMT+03:00, Erick Perez - Quadrian Enterprises < > eperez at quadrianweb.com> написа: > >It was found that the software NIC team created in Centos was having > >issues due to a failing network cable. The team was going berserk with > >up/down changes. > > > > > >On Fri, Jul 3, 2020 at 10:12 AM Erick Perez - Quadrian Enterprises < > >eperez at quadrianweb.com> wrote: > > > >> Hey! > >> I have a strange condition in one of the servers that I don't where > >to > >> start looking. > >> I login to the server via SSH (cant doit any other way) and anything > >that > >> I type is slow > >> HTTP sessions timeout waiting for screen redraw. So, the server is > >acting > >> "slow". > >> > >> server is bare metal. no virtual services. > >> no alarms in the disk raid > >> > >> note: server was restarted because of power failure. > >> > >> Some outputs from this server that is a mail server: > >> [root at correo ~]# top > >> top - 09:54:43 up 23:51, 2 users, load average: 0.18, 0.23, 0.28 > >> Tasks: 210 total, 1 running, 209 sleeping, 0 stopped, 0 zombie > >> %Cpu(s): 0.2 us, 0.1 sy, 0.0 ni, 99.8 id, 0.0 wa, 0.0 hi, 0.0 > >si, > >> 0.0 st > >> KiB Mem : 32606084 total, 25106412 free, 5932244 used, 1567428 > >buff/cache > >> KiB Swap: 16449532 total, 16449532 free, 0 used. 26282624 > >avail Mem > >> > >> **iostat** > >> [root at correo ~]# iostat -y 5 > >> Linux 3.10.0-1062.12.1.el7.x86_64 (correo.binal.ac.pa) 07/03/2020 > >> _x86_64_ (4 CPU) > >> > >> avg-cpu: %user %nice %system %iowait %steal %idle > >> 0.05 0.00 0.05 0.05 0.00 99.85 > >> > >> Device: tps kB_read/s kB_wrtn/s kB_read > >kB_wrtn > >> sda 0.00 0.00 0.00 0 > >0 > >> dm-0 0.00 0.00 0.00 0 > >0 > >> dm-1 0.00 0.00 0.00 0 > >0 > >> > >> avg-cpu: %user %nice %system %iowait %steal %idle > >> 0.05 0.00 0.05 0.05 0.00 99.85 > >> > >> Device: tps kB_read/s kB_wrtn/s kB_read > >kB_wrtn > >> sda 21.40 0.00 169.60 0 > >848 > >> dm-0 21.40 0.00 169.60 0 > >848 > >> dm-1 0.00 0.00 0.00 0 > >0 > >> > >> avg-cpu: %user %nice %system %iowait %steal %idle > >> 0.60 0.00 0.05 0.45 0.00 98.90 > >> > >> Device: tps kB_read/s kB_wrtn/s kB_read > >kB_wrtn > >> sda 1.20 16.80 0.00 84 > >0 > >> dm-0 1.20 16.80 0.00 84 > >0 > >> dm-1 0.00 0.00 0.00 0 > >0 > >> > >> avg-cpu: %user %nice %system %iowait %steal %idle > >> 0.05 0.00 0.00 0.05 0.00 99.90 > >> > >> Device: tps kB_read/s kB_wrtn/s kB_read > >kB_wrtn > >> sda 8.00 0.00 100.20 0 > >501 > >> dm-0 9.00 0.00 100.20 0 > >501 > >> dm-1 0.00 0.00 0.00 0 > >0 > >> > >> avg-cpu: %user %nice %system %iowait %steal %idle > >> 0.45 0.00 0.35 0.05 0.00 99.15 > >> > >> Device: tps kB_read/s kB_wrtn/s kB_read > >kB_wrtn > >> sda 1.00 0.80 3.20 4 > >16 > >> dm-0 1.00 0.80 3.20 4 > >16 > >> dm-1 0.00 0.00 0.00 0 > >0 > >> > >> > >> **dstop** > >> [root at correo ~]# dstat -cd --disk-util --disk-tps > >> ----total-cpu-usage---- -dsk/total- sda- -dsk/total- > >> usr sys idl wai hiq siq| read writ|util|reads writs > >> 1 0 99 0 0 0| 20k 17k|0.14| 1 1 > >> 0 0 100 0 0 0| 0 0 | 0| 0 0 > >> 0 0 100 0 0 0| 0 0 | 0| 0 0 > >> 0 0 100 0 0 0| 0 0 | 0| 0 0 > >> 0 0 100 0 0 0| 0 0 | 0| 0 0 > >> 0 0 100 0 0 0| 0 0 | 0| 0 0 > >> 4 0 84 11 0 0|2512k 228k|52.3| 123 2 > >> 31 4 58 7 0 0|1912k 1026k|38.1| 132 23 > >> 0 0 99 0 0 0| 0 0 | 0| 0 0 > >> 1 0 99 1 0 0|4096B 3819k|22.5| 1 270 > >> 0 0 100 0 0 0| 0 0 | 0| 0 0 > >> 13 1 83 4 0 0| 148k 2304k|15.3| 18 214 > >> 1 0 98 1 0 0| 140k 499k|9.70| 14 8 > >> 26 5 69 0 0 0| 0 1260k|1.30| 0 46 > >> 56 7 38 0 0 0| 0 204k|0.30| 0 12 > >> 14 11 75 0 0 0| 0 0 | 0| 0 0 > >> 22 10 68 0 0 0| 0 0 | 0| 0 0 > >> 16 10 71 3 0 0| 192k 37k|14.0| 12 2 > >> 0 0 100 0 0 0| 0 0 | 0| 0 0 > >> 0 0 100 0 0 0| 0 152k| 0| 0 2 > >> 0 0 100 0 0 0| 0 0 | 0| 0 0 > >> 1 1 98 1 0 0| 16k 2569k|14.8| 1 207 > >> 1 1 98 0 0 0|4096B 0 |1.10| 1 0 > >> 1 0 99 0 0 0| 0 0 | 0| 0 0 > >> 0 0 100 0 0 0| 0 600k|1.30| 0 51 > >> 2 0 98 0 0 0| 0 0 | 0| 0 0 > >> 4 0 96 0 0 0| 0 0 | 0| 0 0 > >> 0 0 100 0 0 0| 0 0 | 0| 0 0 > >> > >> > >> > >> -- > >> > >> --------------------- > >> Erick Perez > >> --------------------- > >> > -- --------------------- Erick Perez Quadrian Enterprises S.A. - Panama, Republica de Panama Skype chat: eaperezh WhatsApp IM: +507-6675-5083 ---------------------