Static parent/Dynamic child
# fork_bench test on SunOS 5.7 aegis sun4u : Solaris 7 UltraSPARC1/143
Avg fork() + execl() time = 11.59 ms
Static parent/Static child
# fork_bench test on SunOS 5.7 aegis sun4u : Solaris 7 UltraSPARC1/143
Avg fork() + execl() time = 3.66 ms
Dynamic parent/Dynamic child
# fork_bench test on SunOS 5.7 aegis sun4u : Solaris 7 UltraSPARC1/143
Avg fork() + execl() time = 13.35 ms
Dynamic parent/Static child
# fork_bench test on SunOS 5.7 aegis sun4u : Solaris 7 UltraSPARC1/143
Avg fork() + execl() time = 6.51 ms
On Thu, 6 May 1999, Sasha Pachev wrote:
> Static parent/Dynamic child
> # fork_bench test on Linux 2.0.33 www.sashanet.com i586 : Pentium 166
> 32 MB EDO RAM
> Avg fork() + execl() time = 8.36 ms
> Static parent/Static child
> # fork_bench test on Linux 2.0.33 www.sashanet.com i586 : Pentium 166
> 32 MB EDO RAM
> Avg fork() + execl() time = 1.95 ms
> Dynamic parent/Dynamic child
> # fork_bench test on Linux 2.0.33 www.sashanet.com i586 : Pentium 166
> 32 MB EDO RAM
> Avg fork() + execl() time = 8.80 ms
> Dynamic parent/Static child
> # fork_bench test on Linux 2.0.33 www.sashanet.com i586 : Pentium 166
> 32 MB EDO RAM
> Avg fork() + execl() time = 2.48 ms
>
> Static parent/Dynamic child
> # fork_bench test on Linux 2.0.36 www.isshost.com i686 : Pentium II
> 350 128 MB SDRAM
> Avg fork() + execl() time = 2.31 ms
> Static parent/Static child
> # fork_bench test on Linux 2.0.36 www.isshost.com i686 : Pentium II
> 350 128 MB SDRAM
> Avg fork() + execl() time = 0.43 ms
> Dynamic parent/Dynamic child
> # fork_bench test on Linux 2.0.36 www.isshost.com i686 : Pentium II
> 350 128 MB SDRAM
> Avg fork() + execl() time = 2.45 ms
> Dynamic parent/Static child
> # fork_bench test on Linux 2.0.36 www.isshost.com i686 : Pentium II
> 350 128 MB SDRAM
> Avg fork() + execl() time = 0.55 ms
>
>
>
> I'd be interested to see what you get on others. From the results I got,
> it seems that unless your server(Intel hardware/Linux) gets hit in the
> order of magnitude of 1000 times per second, the overhead of fork() +
> execve() is relatively insignificant. Correct me if my interpretation
> of the results is in error.
>
> --
> Sasha Pachev
> http://www.sashanet.com
>
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~~~
Kevin Ying / Sysadmin Team Leader interQ, Inc.
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