what to do on high load?

hello

my server is having a load around 4~5 in the last 10 minutes

Code: 
 16:35:16  up 8 days, 11:40,  2 users,  load average: 5.36, 4.56, 4.04
175 processes: 174 sleeping, 1 running, 0 zombie, 0 stopped
CPU states:  cpu    user    nice  system    irq  softirq  iowait    idle
           total    0.0%    0.0%    0.0%   0.0%     0.0%    0.0%    0.0%
           cpu00    0.0%    0.0%    0.0%   0.0%     0.0%    0.0%    0.0%
           cpu01    0.0%    0.0%    0.0%   0.0%     0.0%    0.0%    0.0%
Mem:  1032556k av, 1015832k used,   16724k free,       0k shrd,   94168k buff
       410460k active,             518988k inactive
Swap: 2040212k av,   90168k used, 1950044k free                  574992k cached
top process seens to be httpd, but apache is having less than 20 requests/second (that's a p4 2.8 GHz)

i tried restart it, but the load is still high

suggestions?

thanks

 

 

 

 

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