My apology if this is not the correct forum for this question. I am trying to understand why deleting large files take so long? If this is not the correct forum, please kindly let me know which forum I can ask this question. I created 4 large files, 30 GB per file, for total size of 120 GB. Then when my machine was idle (no CPU, no IO), I deleted these 4 files at the same time. Deleting these files at the same time took 12 secs, most of each was due to kernel time! $ time rm -f large* test.log real 0m12.002s user 0m0.001s sys 0m11.928s Kernel is RedHat Enterprise 6.x Linux ctran-ld 2.6.32-131.4.1.el6.x86_64 #1 SMP Fri Jun 10 10:54:26 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux Server has 64 GByte memory. Drive is SAS 15K RPM. CPU is Xeon E5620@2.40Hz, 8 cores including hyper-threading. Why does it take so long to delete these files (diskIO during deleting is about couple of 100 MBytes, probably to commit changes in meta-data in journal). Thanks so much for shedding light on this puzzle. Cheers, --Cuong -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
