Re: Slow terminal response Centos 7.7 1908

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]



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@xxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxxx> 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@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@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@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
>> ---------------------
>>
_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
https://lists.centos.org/mailman/listinfo/centos




[Index of Archives]     [CentOS]     [CentOS Announce]     [CentOS Development]     [CentOS ARM Devel]     [CentOS Docs]     [CentOS Virtualization]     [Carrier Grade Linux]     [Linux Media]     [Asterisk]     [DCCP]     [Netdev]     [Xorg]     [Linux USB]


  Powered by Linux