I want to report very slow deletion of 24 50GB files (in total 12 TB), all present in the same folder.
OS is CentOS 6.4, with upgraded kernel 3.13.1. The hardware is a Supermicro server with 15x 4TB WD Se drives in MD RAID 6, totalling 52TB of free space. XFS is formated directly on the RAID volume, without LVM layers. Deletion was done with rm -f * command, and it took upwards of 1 hour to delete the files. File system was filled completely prior to deletion. rm was mostly waiting (D state), probably for kworker threads, and iostat was showing big HDD utilization numbers and very low throughput so it looked like a random HDD workload was in effect. rm was the only IO task at the moment. I found it strange that deleting large files should take such a long time, so I thought it would be wise to report. Thanks, Milan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
