4.8.11-300.fc25.x86_64 I'm currently doing a btrfs send/receive and I'm seeing a rather large hit for crc32c, bigger than aes-ni (the volume is on dm crypt), using perf top. 14.03% btrfs [.] __crc32c_le 10.50% [kernel] [k] _aesni_enc4 Complete output is here for 1 month: https://paste.fedoraproject.org/498914/ I don't remember crc32's taking this much CPU before, so it seems like a regression but offhand I don't know when it started. [chris@f25s ~]$ dmesg | grep crc32 [ 4.226700] Btrfs loaded, crc32c=crc32c-intel [chris@f25s ~]$ lsmod | grep crc libcrc32c 16384 1 dm_persistent_data crct10dif_pclmul 16384 0 crc32_pclmul 16384 0 crc32c_intel 24576 2 -- Chris Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
