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Time taken for creation of a huge core file


 
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Special Forums Hardware Filesystems, Disks and Memory Time taken for creation of a huge core file
# 1  
Old 09-18-2002
Question Time taken for creation of a huge core file

Hi,
I needed to know how I can find out the time needed for an Unix machine(HP) to create a corefile as huge as 500MB(core created either by a SEGV or a kill -6 command). An approximate figure of the time taken would be really helpful.Smilie
# 2  
Old 09-18-2002
It just took me 1 minute 19 seconds. But not all HP system run at the same rate. Why not just give it try and time it for yourself on your system?
# 3  
Old 09-19-2002
Thanx for your reply.
I would like to try it out myself on my system for which I want to know the exact process(steps) you carried out to determine the time(of 1 min 19 secs) so that I can follow the same.
Pls let me know how u did it.
# 4  
Old 09-19-2002
I wrote a program:
Code:
char x1[100000000];
char x2[100000000];
char x3[100000000];
char x4[100000000];
char x5[100000000];
main() { kill(getpid(),6); }

Call the program "bigdump.c". Then:
cc bigdump.c -o bigdump
date ; ./bigdump ; date
# 5  
Old 10-12-2002
time dd if=/dev/zero of=bigfile bs=1024 count=500000

will time creation of a 500MB file on just about any unix.

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