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filesystems benchmarks

A set of scripts for filesystem benchmark and comparison performance with different options enabled.

WARNING! Running this file may cause a potential data loss and assumes you accept that you know what you're doing. All actions with this script at your own risk.

Usage

  1. Most of the scripts require rsync to be installed.
  2. Parallel testing scripts requires gnu parallel: apt-get install parallel.
  3. Set your variables inside the script (for your disk topology, mount points, file to test on, etc...) as shown in variable section.
  4. Run and get something like:
Testing: disks=sdc1/sdd1 in parrallel | autodefrag,space_cache=v2,ssd,ssd_spread
write 3 copies:
 21,478,375,424 100%  513.93MB/s    0:00:39 (xfr#1, to-chk=0/1)
 21,478,375,424 100%  497.14MB/s    0:00:41 (xfr#1, to-chk=0/1)   load average: 2,77, 1,54, 1,50

 21,478,375,424 100%  498.00MB/s    0:00:41 (xfr#1, to-chk=0/1)
 21,478,375,424 100%  490.62MB/s    0:00:41 (xfr#1, to-chk=0/1)   load average: 3,70, 2,14, 1,72

 21,478,375,424 100%  507.54MB/s    0:00:40 (xfr#1, to-chk=0/1)
 21,478,375,424 100%  495.04MB/s    0:00:41 (xfr#1, to-chk=0/1)   load average: 3,48, 2,53, 1,92

read 3 copies:
 21,478,375,424 100%  437.98MB/s    0:00:46 (xfr#1, to-chk=0/1)
 21,478,375,424 100%  436.84MB/s    0:00:46 (xfr#1, to-chk=0/1)   load average: 3,17, 2,72, 2,08

 21,478,375,424 100%  446.55MB/s    0:00:45 (xfr#1, to-chk=0/1)          
 21,478,375,424 100%  445.75MB/s    0:00:45 (xfr#1, to-chk=0/1)   load average: 3,41, 2,86, 2,16 

 21,478,375,424 100%  446.55MB/s    0:00:45 (xfr#1, to-chk=0/1)          
 21,478,375,424 100%  445.75MB/s    0:00:45 (xfr#1, to-chk=0/1)   load average: 3,41, 2,86, 2,16

Variables

Edit script variables to set-up script(s):

  • ZFS_POOL_NAME (e.g. "ssd"): ZFS pool name.
  • POOL_PATH (e.g. "/mnt/ssd"): Mount path for the ZFS pool or btrfs filesystem.
  • FILENAME (e.g. "testfile"): File to check performance within.
  • RAMDISK_PATH (e.g. "/mnt/ramdisk"): Mount path for ramdisk (tempfs).
  • SOURCE_FILE_PATH (e.g. "/var/lib/libvirt/images"): A source path where testfile (see FILENAME) for copy to ramdisk.
  • BTRFS_MOUNT_OPTIONS (e.g. "autodefrag,space_cache=v2,ssd,ssd_spread"): Mount options for BTRFS filesystems.
  • RAMDISK_SIZE (e.g. 220): Ramdisk size in gigabytes.
  • BLOCK_DEVICES_NUMBER (e.g. 10): Number of block devices to benchmark.
  • BLOCK_DEVICE_NAME (e.g. "sda"): Name of a block device for single disk tests.
  • BLOCK_DEVICES (e.g. "/dev/sdc /dev/sde /dev/sdg /dev/sdi"): Space separated block devices list to perform tests with.
  • ZFS_POOL_TOPOLOGY (e.g. "mirror sdc sde mirror sdg sdi"): ZFS pool topology to create and perform tests with.
  • BLOCK_DEVICES_START_LETTER (e.g. "a"): First letter of block devices sequence to benchmark (a will be an sda).
  • BLOCK_DEVICES_END_LETTER (e.g. "j"): Last letter of block devices sequence to benchmark.
  • NUMBER_OF_ITERATIONS (e.g. 3): Number of write/read iterations.
  • ZFS_ATIME_OPTION (off or on): Disable/enable atime option on ZFS pool.
  • ZFS_DEDUP_OPTION (off or on): Disable/enable deduplication option on ZFS pool.
  • ZFS_COMPRESSION_OPTION (on, off, lzjb, gzip, gzip-[1-9], zle or lz4): Enable, disable or specify compression algorythm for ZFS pool filesystem compression option.
  • RAID1_BLOCK_DEVICES (e.g. "/dev/sda /dev/sdb"): Block devices of RAID1.
  • ZFS_MIRROR1_TOPOLOGY (e.g. "mirror sda sdb"): ZFS pool mirror 1 devices.
  • ZFS_MIRROR2_TOPOLOGY (e.g. "mirror sdc sde"): ZFS pool mirror 2 devices.

Contents