Re: Extremely poor performance crunching random numbers under PIV-FC5

[Andy Green <andy@xxxxxxxxxxx>]

BankHacker wrote:
> These are the linked libraries the dynamic version is using:
> # ldd dynamic-test-cpu-2
>        linux-gate.so.1 =>  (0x003c1000)
>        libm.so.6 => /lib/libm.so.6 (0x00728000)
>        libc.so.6 => /lib/libc.so.6 (0x005ed000)
>        /lib/ld-linux.so.2 (0x005d0000)

OK

> Running the debugger strace gives these diferencial results:
> # strace -o /tmp/dump-dynamic ./dynamic-test-cpu-2
>
>     times({tms_utime=28, tms_stime=13, tms_cutime=0, tms_cstime=0}) = 
> 1718797100
>     times({tms_utime=4511, tms_stime=13, tms_cutime=0, tms_cstime=0}) = 
> 1718801583
>     write(1, "10 millones de rand() en 44.830 "..., 72) = 72
>
> # strace -o /tmp/dump-static ./static-test-cpu-2
>
>     times({tms_utime=27, tms_stime=13, tms_cutime=0, tms_cstime=0}) = 
> 1718810164
>     times({tms_utime=50, tms_stime=13, tms_cutime=0, tms_cstime=0}) = 
> 1718810186
>     write(1, "10 millones de rand() en 0.230 s"..., 71) = 71

Can that really be the only changes?  Should the dynamic version not be 
touching its dynamic libs early in the dump and the static version not?

-Andy

Attachment: smime.p7s
Description: S/MIME Cryptographic Signature

-- 
fedora-list mailing list
fedora-list@xxxxxxxxxx
To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list