Weird high load on server

Dan Track dan.track at gmail.com
Tue Jul 19 15:07:17 UTC 2005


On 7/19/05, nodata <fedora at nodata.co.uk> wrote:
> > On 7/19/05, nodata <fedora at nodata.co.uk> wrote:
> >> > Hi Guys,
> >> >
> >> > Hope you experts can help me out here.
> >> >
> >> > Basically I have server running at a very high load 2.44, although
> >> > nothing is noticably high when using top. There aren't any processes
> >> > running on the box except the standard linux OS tools. This box is
> >> > used for backup, and only becomes active during the night.
> >> >
> >> > Its a compaq dl380 with a raid 5 configuration.
> >> >
> >> > Can anyone suggest what I can do to find out why the load is high?
> >> >
> >> > Thanks for your help in advance.
> >> >
> >> > Dan
> >> >
> >>
> >> I bet you have hanging nfs mounts.
> >> If the box is constantly at a load of around 2.44, and isn't sluggish, I
> >> wouldn't worry.
> >>
> >> Look at iostat, sar, etc. to find out why the load is like that.
> >>
> >
> >
> > Hi
> >
> > I've looked at these but can't see anything. The server doesn't mount
> > or export any filesystems using nfs or any other protocol. If it helps
> > here are the various outputs:
> >
> >  uptime
> >  14:45:49  up 62 days, 43 min,  2 users,  load average: 1.46, 1.57, 1.59
> >
> > sar 5 10
> > Linux 2.4.21-27.0.4.ELsmp (orion.gs.moneyextra.com)     19/07/05
> >
> > 14:46:02          CPU     %user     %nice   %system     %idle
> > 14:46:07          all      0.00      0.00      0.00    100.00
> > 14:46:12          all      0.00      0.00      0.10     99.90
> > 14:46:17          all      0.00      0.00      0.10     99.90
> > 14:46:22          all      0.00      0.00      0.00    100.00
> > 14:46:27          all      0.00      0.00      0.00    100.00
> > 14:46:32          all      0.00      0.00      0.10     99.90
> > 14:46:37          all      0.00      0.00      0.00    100.00
> > 14:46:42          all      0.10      0.00      0.31     99.59
> > 14:46:47          all      0.00      0.00      0.00    100.00
> > 14:46:52          all      0.00      0.00      0.00    100.00
> > Average:          all      0.01      0.00      0.06     99.93
> >
> > vmstat -a
> > procs                      memory      swap          io     system
> > cpu
> >  r  b   swpd   free  inact active   si   so    bi    bo   in    cs us sy
> > wa id
> >  0  0      0  15404 189668 202836    0    0     3     1    0     2  3  4
> > 1  3
> >
> > free -m
> >              total       used       free     shared    buffers     cached
> > Mem:           498        483         15          0        128        301
> > -/+ buffers/cache:         53        445
> > Swap:         1027          0       1027
> >
> > iostat
> > Linux 2.4.21-27.0.4.ELsmp (orion.gs.moneyextra.com)     19/07/05
> >
> > avg-cpu:  %user   %nice    %sys   %idle
> >            3.11    0.00    3.72   93.17
> >
> > Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
> > /dev/ida/c0d0    19.68       427.93       279.15 2147483647 1400883506
> > /dev/ida/c0d0p1
> >                   0.00         0.22         0.00    1087144       8986
> > /dev/ida/c0d0p2
> >                   0.65         3.72        10.24   18680778   51401528
> > /dev/ida/c0d0p3
> >                   0.00         0.00         0.00        248          0
> > /dev/ida/c0d0p4
> >                   0.00         0.00         0.00          0          0
> > /dev/ida/c0d0p5
> >                   0.74         3.90         6.88   19570498   34517568
> > /dev/ida/c0d0p6
> >                   0.00         0.00         0.00        168          0
> > /dev/ida/c0d0p7
> >                   0.00         0.00         0.00        168          0
> > /dev/ida/c0d0p8
> >                  18.29       427.93       262.03 2147483647 1314955424
> >
> > top
> >  14:47:51  up 62 days, 45 min,  2 users,  load average: 1.73, 1.61, 1.59
> > 61 processes: 60 sleeping, 1 running, 0 zombie, 0 stopped
> > CPU states:  cpu    user    nice  system    irq  softirq  iowait    idle
> >            total    0.4%    0.0%    0.0%   0.0%     0.0%    0.0%   99.5%
> >            cpu00    0.9%    0.0%    0.0%   0.0%     0.0%    0.0%   99.0%
> >            cpu01    0.0%    0.0%    0.0%   0.0%     0.0%    0.0%  100.0%
> > Mem:   510400k av,  495224k used,   15176k free,       0k shrd,  132000k
> > buff
> >                     203040k actv,  182824k in_d,    6852k in_c
> > Swap: 1052592k av,       0k used, 1052592k free                  308668k
> > cached
> >
> >   PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME CPU COMMAND
> > 13100 root      20   0  1092 1092   888 R     0.4  0.2   0:00   0 top
> >     1 root      15   0   512  512   452 S     0.0  0.1   1:18   0 init
> >     2 root      RT   0     0    0     0 SW    0.0  0.0   0:00   0
> > migration/0
> >     3 root      RT   0     0    0     0 SW    0.0  0.0   0:00   1
> > migration/1
> >     4 root      15   0     0    0     0 SW    0.0  0.0   0:00   1 keventd
> >     5 root      34  19     0    0     0 SWN   0.0  0.0   0:00   0
> > ksoftirqd/0
> >     6 root      34  19     0    0     0 SWN   0.0  0.0   0:00   1
> > ksoftirqd/1
> >     9 root      15   0     0    0     0 SW    0.0  0.0   0:00   0 bdflush
> >     7 root      15   0     0    0     0 SW    0.0  0.0  70:21   0 kswapd
> >     8 root      15   0     0    0     0 SW    0.0  0.0  23:07   1 kscand
> >    10 root      15   0     0    0     0 SW    0.0  0.0   3:30   0 kupdated
> >    11 root      25   0     0    0     0 SW    0.0  0.0   0:00   0
> > mdrecoveryd
> >    18 root      15   0     0    0     0 SW    0.0  0.0   0:00   0 ahc_dv_0
> >    19 root      25   0     0    0     0 SW    0.0  0.0   0:00   0
> > scsi_eh_0
> >    23 root      15   0     0    0     0 SW    0.0  0.0   2:30   1
> > kjournald
> >   192 root      15   0     0    0     0 SW    0.0  0.0   0:00   0
> > kjournald
> >   193 root      15   0     0    0     0 SW    0.0  0.0  13:57   1
> > kjournald
> >   194 root      15   0     0    0     0 SW    0.0  0.0   4:18   0
> > kjournald
> >   568 root      15   0   576  576   492 S     0.0  0.1   0:57   0 syslogd
> >   572 root      15   0   472  472   408 S     0.0  0.0   0:00   1 klogd
> >   582 root      15   0   452  452   388 S     0.0  0.0   5:33   1
> > irqbalance
> >   599 rpc       15   0   600  600   524 S     0.0  0.1   0:22   0 portmap
> >   618 rpcuser   25   0   720  720   644 S     0.0  0.1   0:00   0
> > rpc.statd
> >   629 root      15   0   400  400   344 S     0.0  0.0   0:18   0 mdadm
> >   712 root      15   0  3160 3160  2024 S     0.0  0.6   3:22   1 snmpd
> >   713 root      25   0  3160 3160  2024 S     0.0  0.6   0:00   0 snmpd
> >   722 root      15   0  1576 1576  1324 S     0.0  0.3   4:58   1 sshd
> >
> > Anyone have any ideas. Literally the box is sitting there not doing
> > anything that has been scheduled.
> >
> > This happens occassionally then the load spontaneously goes down. Do
> > you reckon it has something to do with the raid 5?
> >
> > Thanks
> > Dan
> >
> 
> ps auxw | grep " D "
> 
Hi,

I get the following:

ps auxw | grep " D "
root     15802  0.0  0.1  3688  660 pts/0    S    16:06   0:00 grep  D

Dan




More information about the users mailing list