[COLUG] MVMRUG Spring Meeting Announcement - April 25 - Columbus OH

[Travis Sidelinger]

I notice the large difference in user time, but linux on Z completed in 
less real time.  Any ideas why that would be?

-Travis

R P Herrold wrote:
> On Sun, 20 Apr 2008, Rick Troth wrote:
> 
>> ... and ... you are not only INVITED
>> but you are ENCOURAGED to attend.  Linux on "System z" is neat stuff!
> 
> IBM has been kind enough to have provided me access to a zLinux 
> instance, and it times out faster than a nominally faster Intel unit.
> 
> [herrold at etpglnz ~]$ time ( rpmbuild --rebuild \
>     graphviz-2.8-1.sl.src.rpm > /dev/null 2>&1 )
> 
> real    10m13.022s
> user    8m27.421s
> sys     1m25.430s
> [herrold at etpglnz ~]$ dmesg | grep -i ogo
> Calibrating delay loop... 3394.76 BogoMIPS (lpj=16973824)
> [herrold at etpglnz ~]$ free
>              total       used       free     shared    buffers cached
> Mem:        511352     300948     210404          0      32840 136772
> -/+ buffers/cache:     131336     380016
> Swap:       539896          0     539896
> [herrold at etpglnz ~]$ uname -a
> Linux etpglnz 2.6.18-53.el5 #1 SMP Wed Oct 10 16:34:30 EDT 2007 s390x 
> s390x s390x GNU/Linux
> [herrold at etpglnz ~]$
> 
> compare to building the same package with an identical build 
> environment, on a nominally faster Intel platform:
> 
> [herrold at centos-5 ~]$ time ( rpmbuild --rebuild \
>     graphviz-2.8-1.sl.src.rpm > /dev/null 2>&1 )
> 
> real    12m10.345s
> user    2m37.486s
> sys     1m52.115s
> [herrold at centos-5 ~]$ dmesg | grep -i ogo
> Calibrating delay using timer specific routine.. 6652.18 BogoMIPS 
> (lpj=13304367)
> [herrold at centos-5 ~]$ free
>              total       used       free     shared    buffers cached
> Mem:       3907584    3129248     778336          0     106780 865244
> -/+ buffers/cache:    2157224    1750360
> Swap:      8193140        176    8192964
> [herrold at centos-5 ~]$ uname -a
> Linux centos-5.first.lan 2.6.18-53.1.14.el5xen #1 SMP Wed Mar 5 12:08:17 
> EST 2008 x86_64 x86_64 x86_64 GNU/Linux
> [herrold at centos-5 ~]$
> 
> -- Russ herrold
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