Now tried with a kernel compile with gcc patched as in prev email (stock glibc and no glibc environment parameters). Without rebooting (still plenty of hugepages as usual). always: real 4m7.280s real 4m7.520s never: real 4m13.754s real 4m14.095s So the kernel now builds 2.3% faster. As expected nothing huge here because of gcc not using several hundred hundred mbytes of ram (unlike translate.o or other more pathological files), and there's lots of cpu time spent not just in gcc. Clearly this is not done for gcc (but for JVM and other workloads with larger working sets), but even a kernel build running more than 2% faster I think is worth mentioning as it confirms we're heading towards the right direction. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>