Thank you all for your many suggestions. After performing all the tweaks suggested, I was able to write a 5GB file from my workstation to my server at 100MB/sec!!! Reads (from the server) are equally as fast and are mainly limited by my workstation now. The server has dual bonded gigabit NICs so it can throw the data pretty fast. Here is what I did: echo 16384 > /sys/block/md0/md/stripe_cache_size Added to /etc/fstab for md0: barrier=1,journal_checksum,stripe=5 Switched to AHCI mode for both my SATA controllers One of my disks in the BIOS was not set to 32bit transfer mode where the others were. I changed that. And finally my kernel version changed when I rebooted. I'm not sure if it is relevant but thought it should be noted: 2.6.32.14-127.fc12.x86_64 instead of 2.6.32.11-99.fc12.x86_64. Additionally, it should be noted that my wait states went down to about 2-3% while writing to the array (instead of 20-40%) and CPU usage was only about 40% total instead of maxed. dd if=/dev/zero of=zerofile bs=1M count=6144 conv=fdatasync,notrunc 6144+0 records in 6144+0 records out 6442450944 bytes (6.4 GB) copied, 37.1289 s, 174 MB/s Thank you all for your help! --- Will Y. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
