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# 1  
Old 03-31-2008
help with perl
hi
i am trying to write a perl script which will run in cron job and with the help of top command generate a log file of processes talking more cpu , running from long time , not associated with terminal and few other rules now i have modified top output as follows :
Code:
USERNAME      PID      TTY  TIME     WCPU  CPU           COMMAND
fnsonld8           375       ?  1311:02  99.89   99.71         rtsora
fnsonld7         19036       ?  1184:04  99.72   99.54         rtsora
fnsonld9         14489       ?  1241:52  99.70   99.53         rtsora
 fnsonlg          9815  pts/24  2495:00  98.86   98.69         rtsora
    root            54       ?   399:37   1.30    1.29          vxfsd
    root          1763       ?     1:55   0.43    0.43            rds
    root          1990       ?    18:00   0.28    0.28          vxsvc
    root          1380       ?    53:56   0.25    0.25      sendmail:
    root            38       ?    20:42   0.15    0.15       schedcpu
    root            19       ?     5:21   0.14    0.14 ksyncer_daemon
    root          1501       ?     0:03   0.12    0.12           rpcd

i am want to create structure with hash as follows :
Code:
USERNAME --- PID --- COMMAND
                              |_  CPU
                              |_  TIME
                              |_  TTY

Code:
 
fnsonld8--- 375 --- rtsora
                      |_ 99.71
                      |_ 1311.02
                      |_ ?

root--- 54 --- vxfcd
      |       |_  1.29
      |       |_ 399.37
      |       |_ ?
      |
      |_ 1763 --- rds
                 |_  0.43
                 |_  1.55
                 |_ pts/24
and so on

i am using hash to store data if there are more than entries per user them i am only managing to get last one as well as i am not able to display the way i displayed above ...

i will post my code 2row when i go to office ...even hints will do
# 2  
Old 03-31-2008
You need a more complex data structure. Maybe a hash of hashes of arrays. See if this link helps you sort that issue out:

perldsc - perldoc.perl.org
# 3  
Old 03-31-2008
Sometimes I find it easier to combine information instead of creating a really complex table structure...(complex structures slow things down fast and I tend to loose my place in the hash). So, instead you could simplify the data...the first key would be fnsonld8_375 and then you could create multiple dimensions from there...but at least that reduces everything by 1 dimensions. When you search the keys you will have to use a pattern match. And you could further reduce dimensions by keeping the last set of values as a list. So your first key would be fnsonld8_375 followed by rtsora and the value would be a string containing "99.71, 1311.02, ?"...that's 3D which isn't difficult to deal with at all. Hope that helps.
# 4  
Old 03-31-2008
The structure he wants is 3D. (key/key/array) I see nothing difficut or complex here.
I recommend he uses a complex data structure, the advantages in the long run are tremendous. Very easy to code:

Code:
use Data::Dumper;
my %HoHoA = ();
<DATA>; #skip header;
while (<DATA>) {
    my ($user,$pid,$com,$cpu,$time,$tty) = (split)[0,1,6,5,3,2];
    push @{ $HoHoA{$user}{$pid}{$com} }, [$cpu,$time,$tty];
}
print Dumper \%HoHoA;
__DATA__
USERNAME      PID      TTY  TIME     WCPU  CPU           COMMAND
fnsonld8           375       ?  1311:02  99.89   99.71         rtsora
fnsonld7         19036       ?  1184:04  99.72   99.54         rtsora
fnsonld9         14489       ?  1241:52  99.70   99.53         rtsora
 fnsonlg          9815  pts/24  2495:00  98.86   98.69         rtsora
    root            54       ?   399:37   1.30    1.29          vxfsd
    root          1763       ?     1:55   0.43    0.43            rds
    root          1990       ?    18:00   0.28    0.28          vxsvc
    root          1380       ?    53:56   0.25    0.25      sendmail:
    root            38       ?    20:42   0.15    0.15       schedcpu
    root            19       ?     5:21   0.14    0.14 ksyncer_daemon
    root          1501       ?     0:03   0.12    0.12           rpcd

Edit: actually the structure is 4D. My bad. key/key/key/array. But the differnce between 3D and 4D seems fairly trivial here, especially since the first 3D's are just hash keys used to combine the cpu/time/tty data in seperate sets of data.
Last edited by KevinADC; 03-31-2008 at 05:37 PM..
# 5  
Old 04-01-2008
Quote:
Originally Posted by vincaStar
Sometimes I find it easier to combine information instead of creating a really complex table structure...(complex structures slow things down fast and I tend to loose my place in the hash). So, instead you could simplify the data...the first key would be fnsonld8_375 and then you could create multiple dimensions from there...but at least that reduces everything by 1 dimensions. When you search the keys you will have to use a pattern match. And you could further reduce dimensions by keeping the last set of values as a list. So your first key would be fnsonld8_375 followed by rtsora and the value would be a string containing "99.71, 1311.02, ?"...that's 3D which isn't difficult to deal with at all. Hope that helps.

thanx for the advice ... ya it looks easy and simple too ...
i had created hash of hashes before but this one is pretty complex ...

thanx everyone for their suggestions
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