https://bugzilla.kernel.org/show_bug.cgi?id=71641 --- Comment #10 from Chia-Hung Chang <fredchang.tc@xxxxxxxxx> --- BTW, if we use 1G ramdisk as journal area, the performance with JBD2_NR_batch =2048 can be 571MB/s Please download the result of blktrace as following, https://dl.dropboxusercontent.com/u/32959539/JBD2_NR_batch_2048_1M.7z -- You are receiving this mail because: You are watching the assignee of the bug. -- 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