![]() | |||||||||||||
Messages in this thread |
> Btw, I just noticed that hard disk throughput is much lower with 2.5 > than 2.4. With 2.4.21-pre5 I get ~40 MB/s, but with 2.5.67 the speed > drops to 25-30 MB/s. Everything according to hdparm. Is it possible > that DMA is generally slow for some reason? I am seeing that too, with IDE hardware. And 2.4.20aa1 is even faster: # mount /ext3_fs # time dd if=/ext3_fs/100MiB_file of=/dev/null bs=32k 2.4.20aa1 : 3.3 sec (exactly what I expect to see) 2.5.66 : 6.6 sec -- Chuck - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
| Last update: 2005-03-22 12:34 [from the cache] ©2003-2008 | |||||||||||||