Highly non-optimally tuned ΔV3 on a simple streaming test
By joe
- 1 minutes read - 119 wordsYowza …
[root@dv3-of coreutils-7.2]# /opt/scalable/bin/dd if=/mnt/data/filesys1/xfs/t/big.file of=/dev/null bs=16M iflag=direct
807+0 records in
807+0 records out
13539213312 bytes (14 GB) copied, 13.2268 s, 1.0 GB/s
Unit has 8 GB ram.
Streaming writes are a bit slower (and direct IO not nearly as efficient for this RAID6).
[root@dv3-of coreutils-7.2]# /opt/scalable/bin/dd if=/dev/zero of=/mnt/data/filesys1/xfs/t/big.file bs=16M count=2k
2048+0 records in
2048+0 records out
34359738368 bytes (34 GB) copied, 82.3577 s, 417 MB/s
For laughs, lets re-read that 34 GB I just wrote out.
[root@dv3-of coreutils-7.2]# /opt/scalable/bin/dd if=/mnt/data/filesys1/xfs/t/big.file of=/dev/null bs=16M iflag=direct
2048+0 records in
2048+0 records out
34359738368 bytes (34 GB) copied, 33.9782 s, 1.0 GB/s
Yuppers. Not a bad little box. Imagine if we were running our tuned kernel and distribution on it :)