Am Mittwoch, 27. Juni 2007 14:34 schrieben Sie: > * Manfred Gruber <m.gruber@xxxxxxxxx> wrote: > > hi ! > > > > I use a arm4vt ep93xx processor with 2.6.21.5-rt18. > > When i run cyclictest with -i 10000 and -n -p 90 -b 1000 i see some > > strange latencies in poison_obj. > > disable SLAB_DEBUG. And look into your 'dmesg' output, the -rt kernel > will warn about any other kernel config options as well that are known > to cause large latencies: > > VFS: Mounted root (ext3 filesystem) readonly. > *************************************************************************** >** * > * * REMINDER, the following debugging option is turned on in your > .config: * * > * * CONFIG_SLAB > * * > * * it may increase runtime overhead and latencies. > * * > * > *************************************************************************** >** Freeing unused kernel memory: 324k freed > > Ingo ok, thanks without SLAB_DEBUG there is no poison_obj latency. -- mfg Manfred Gruber - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
