Marcelo Tosatti wrote:
> We've noticed a slowdown while moving from v2.4 to v2.6 on a small PPC
> platform (855T CPU running at 48Mhz, containing pair of separate I/D
> TLB caches with
> 32 entries each), with a relatively recent kernel (v2.6.11).
>
> Test in question is a "dd" copying 16MB from /dev/zero to RAMDISK.
>
> Which is about 16% of 48000000, the total number of cycles this CPU
performs on one second.
Testing with hdparm -tT /dev/hda shows an 18% slowdown on a PII-400Mhz using
2.4.31/2.6.11.
WHAT'S going on?
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
