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Re: Performance issue system swap partition.



The output is taken Load ave is @ 12

14:45:01  up 12 days, 17:17,  2 users,  load average: 12.67, 7.47, 4.96
209 processes: 191 sleeping, 5 running, 13 zombie, 0 stopped
CPU states:  cpu    user    nice  system    irq  softirq  iowait    idle
           total  167.2%    0.0%   25.8%   0.0%     4.8%    1.8%    0.0%
           cpu00   87.5%    0.0%   11.5%   0.0%     0.0%    0.9%    0.0%
           cpu01   79.8%    0.0%   14.4%   0.0%     4.8%    0.9%    0.0%
Mem:  1024780k av, 1009004k used,   15776k free,       0k shrd,   44236k
buff
                    753664k actv,  141752k in_d,   15680k in_c
Swap: 1999992k av,  259808k used, 1740184k free                  552548k
cached

  PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM  CTIME CPU COMMAND
25064 apache    16   0 14360  12M  3928 S    39.6  1.2   0:04   1 httpd
25034 apache    23   0 61008  41M  4020 R    38.6  4.1   1:41   1 httpd
14118 apache    21   0 15680  13M  3980 R    25.1  1.3   0:32   0 httpd
23292 apache    16   0 15364  14M  3964 S    24.1  1.4   0:08   1 httpd
28441 apache    16   0 13988  12M  3916 S    16.4  1.2   0:01   0 httpd
 7446 apache    16   0 15008  13M  3988 S     6.7  1.3   0:51   0 httpd


]# cat /proc/meminfo
        total:    used:    free:  shared: buffers:  cached:
Mem:  1049374720 1033097216 16277504        0 49688576 682455040
Swap: 2047991808 258445312 1789546496
MemTotal:      1024780 kB
MemFree:         15896 kB
MemShared:           0 kB
Buffers:         48524 kB
Cached:         557884 kB
SwapCached:     108576 kB
Active:         752936 kB
ActiveAnon:     422212 kB
ActiveCache:    330724 kB
Inact_dirty:    142708 kB
Inact_laundry:   28612 kB
Inact_clean:     13916 kB
Inact_target:   187632 kB
HighTotal:      130432 kB
HighFree:         1192 kB
LowTotal:       894348 kB
LowFree:         14704 kB
SwapTotal:     1999992 kB
SwapFree:      1747604 kB
CommitLimit:   2512380 kB
Committed_AS:   799608 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB


On 9/3/07, Herta Van den Eynde <herta vandeneynde gmail com> wrote:
>
> On 03/09/07, nilesh vaghela <nileshj vaghela gmail com> wrote:
> > We have RHEL 3 running groupware horde with around 400 users.
> >
> > output of the top is like
> >
> > 11:56:24  up 12 days, 14:29,  3 users,  load average: 17.56, 13.86,
> 17.18
> > 215 processes: 211 sleeping, 1 running, 3 zombie, 0 stopped
> > CPU states:  cpu    user    nice  system    irq  softirq  iowait    idle
> >            total  133.8%    0.0%   15.6%   0.0%     0.0%   50.0%    0.0%
> >            cpu00   66.7%    0.0%    8.1%   0.0%     0.0%   25.0%    0.0%
> >            cpu01   67.1%    0.0%    7.5%   0.0%     0.1%   25.0%    0.0%
> > Mem:  1024780k av, 1007952k used,   16828k free,       0k shrd,   16804k
> > buff
> >                     752416k actv,  142348k in_d,   17892k in_c
> > Swap: 1999992k av,  286856k used, 1713136k free                  548700k
> > cached
> >
> >   PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM  CTIME CPU
> COMMAND
> > 27403 postgres  17   0 18932  18M 17512 S    36.8  1.8   0:01   0
> postmaster
> > 22027 apache    20   0 14064  13M  3948 S     9.9  1.3   0:06   1 httpd
> >  9730 apache    16   0 15556  14M  4032 S     9.7  1.4   0:23   0 httpd
> > 15890 apache    19   0 15504  14M  4016 S     6.3  1.4   0:18   1 httpd
> >  7907 apache    18   0 15128  14M  4024 S     5.3  1.4   0:14   1 httpd
> > 19281 apache    15   0 15324  14M  3984 S     2.9  1.4   0:12   1 httpd
> >     8 root      15   0     0    0     0 SW    1.7  0.0  43:14   0 kscand
> > 26073 apache    16   0 13784  12M  3912 S     1.7  1.2   0:01   1 httpd
> > 26056 apache    16   0 14588  13M  3928 S     1.5  1.3   0:01   0 httpd
> > 26152 amish.sh  15   0  1152 1112  1020 D     1.5  0.1   0:05   0 imap
> > 19330 apache    15   0 15120  13M  3968 S     1.3  1.3   0:12   1 httpd
> > 21861 apache    16   0 14568  13M  3952 S     1.3  1.3   0:05   1 httpd
> > 22028 apache    15   0 14228  12M  3964 S     1.1  1.2   0:08   1 httpd
> > 21860 apache    15   0 14436  13M  3964 S     0.9  1.3   0:06   0 httpd
> >
> > --------
> >
> > #free -m
> >              total       used       free     shared    buffers
> cached
> > Mem:          1000        985         15          0
> 16        584
> > -/+ buffers/cache:        384        616
> > Swap:         1953        262       1691
> > # iostat
> > Linux 2.4.21-47.0.1.ELsmp (mailserver)      09/03/2007
> >
> > avg-cpu:  %user   %nice    %sys   %idle
> >            8.62    0.00    1.67   89.72
> >
> > Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
> > dev8-0           51.10      2174.61       528.74 2031403260  493924264
> > dev8-1           20.50      1051.40      1106.51  982162050 1033642680
> >
> >
> > Why it is consuming so high swap even the free memory is there ???
> >
> > The io wait consume almost all the cpu power. ??
> >
> >
> > --
> > Nilesh Vaghela
> > ElectroMech
> > Redhat Channel Partner and Training Partner
> > 74, Nalanda Complex, Satellite Rd, Ahmedabad
> > 25, The Emperor, Fatehgunj, Baroda.
> > www.electromech.info
>
> Could you post the output of 'cat /proc/meminfo', please?
>
> Kind regards,
>
> Herta
>
> --
> redhat-list mailing list
> unsubscribe mailto:redhat-list-request redhat com?subject=unsubscribe
> https://www.redhat.com/mailman/listinfo/redhat-list
>



-- 
Nilesh Vaghela
ElectroMech
Redhat Channel Partner and Training Partner
74, Nalanda Complex, Satellite Rd, Ahmedabad
25, The Emperor, Fatehgunj, Baroda.
www.electromech.info


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