Mar 102016
 

Let’s try the speed test which comes with Bacula’s btape utility.

This is Bacula 7.4.0 on FreeBSD 10.2, with a Dell TL4000 LTO-4 tape library.

$ sudo mt -f /dev/sa1  /dev/sa1 status                                                                                                                          
Drive: sa1: <IBM ULT3580-HH4 C7Q1> Serial Number: 1K10012996
---------------------------------
Mode      Density              Blocksize      bpi      Compression
Current:  0x46:LTO-4           variable       323215   enabled (0x1)
---------------------------------
Current Driver State: at rest.
---------------------------------
Partition:   0      Calc File Number:   0     Calc Record Number: 0
Residual:    0  Reported File Number:   0 Reported Record Number: 0
Flags: BOP

$ sudo btape -c /usr/local/etc/bacula/bacula-sd.conf /dev/nsa1
Tape block granularity is 1024 bytes.
btape: butil.c:291-0 Using device: "/dev/nsa1" for writing.
btape: btape.c:471-0 open device "LTO_0" (/dev/nsa1): OK
*rewind
btape: btape.c:576-0 Rewound "LTO_0" (/dev/nsa1)
*speed
btape: btape.c:1055-0 Test with zero data, should give the maximum throughput.
btape: btape.c:904-0 Begin writing 3 files of 1.073 GB with raw blocks of 64512 bytes.
++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=1.073 GB. Write rate = 119.3 MB/s
+++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=1.073 GB. Write rate = 134.2 MB/s
+++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=1.073 GB. Write rate = 153.4 MB/s
btape: btape.c:379-0 Total Volume bytes=3.221 GB. Total Write rate = 134.2 MB/s

btape: btape.c:904-0 Begin writing 3 files of 2.147 GB with raw blocks of 64512 bytes.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=2.147 GB. Write rate = 165.1 MB/s
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=2.147 GB. Write rate = 165.1 MB/s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=2.147 GB. Write rate = 178.9 MB/s
btape: btape.c:379-0 Total Volume bytes=6.442 GB. Total Write rate = 169.5 MB/s

btape: btape.c:904-0 Begin writing 3 files of 4.294 GB with raw blocks of 64512 bytes.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=4.295 GB. Write rate = 178.9 MB/s
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=4.295 GB. Write rate = 186.7 MB/s
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=4.295 GB. Write rate = 178.9 MB/s
btape: btape.c:379-0 Total Volume bytes=12.88 GB. Total Write rate = 181.4 MB/s

btape: btape.c:1067-0 Test with random data, should give the minimum throughput.
btape: btape.c:904-0 Begin writing 3 files of 1.073 GB with raw blocks of 64512 bytes.
++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=1.073 GB. Write rate = 39.77 MB/s
+++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=1.073 GB. Write rate = 71.58 MB/s
+++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=1.073 GB. Write rate = 71.58 MB/s
btape: btape.c:379-0 Total Volume bytes=3.221 GB. Total Write rate = 56.51 MB/s

btape: btape.c:904-0 Begin writing 3 files of 2.147 GB with raw blocks of 64512 bytes.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=2.147 GB. Write rate = 89.48 MB/s
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=2.147 GB. Write rate = 89.48 MB/s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=2.147 GB. Write rate = 89.48 MB/s
btape: btape.c:379-0 Total Volume bytes=6.442 GB. Total Write rate = 89.48 MB/s

btape: btape.c:904-0 Begin writing 3 files of 4.294 GB with raw blocks of 64512 bytes.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=4.295 GB. Write rate = 102.2 MB/s
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=4.295 GB. Write rate = 95.44 MB/s
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=4.295 GB. Write rate = 102.2 MB/s
btape: btape.c:379-0 Total Volume bytes=12.88 GB. Total Write rate = 99.88 MB/s

btape: btape.c:1081-0 Test with zero data and bacula block structure.
btape: btape.c:959-0 Begin writing 3 files of 1.073 GB with blocks of 64512 bytes.
+++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=1.073 GB. Write rate = 76.70 MB/s
+++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=1.073 GB. Write rate = 97.61 MB/s
+++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=1.073 GB. Write rate = 97.61 MB/s
btape: btape.c:379-0 Total Volume bytes=3.221 GB. Total Write rate = 89.48 MB/s

btape: btape.c:959-0 Begin writing 3 files of 2.147 GB with blocks of 64512 bytes.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=2.147 GB. Write rate = 107.3 MB/s
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=2.147 GB. Write rate = 102.2 MB/s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=2.147 GB. Write rate = 107.3 MB/s
btape: btape.c:379-0 Total Volume bytes=6.442 GB. Total Write rate = 105.6 MB/s

btape: btape.c:959-0 Begin writing 3 files of 4.294 GB with blocks of 64512 bytes.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=4.295 GB. Write rate = 113.0 MB/s
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=4.295 GB. Write rate = 113.0 MB/s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=4.295 GB. Write rate = 113.0 MB/s
btape: btape.c:379-0 Total Volume bytes=12.88 GB. Total Write rate = 113.0 MB/s

btape: btape.c:1093-0 Test with random data, should give the minimum throughput.
btape: btape.c:959-0 Begin writing 3 files of 1.073 GB with blocks of 64512 bytes.
+++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=1.073 GB. Write rate = 27.53 MB/s
+++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=1.073 GB. Write rate = 51.13 MB/s
+++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=1.073 GB. Write rate = 48.80 MB/s
btape: btape.c:379-0 Total Volume bytes=3.221 GB. Total Write rate = 39.28 MB/s

btape: btape.c:959-0 Begin writing 3 files of 2.147 GB with blocks of 64512 bytes.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=2.147 GB. Write rate = 58.04 MB/s
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=2.147 GB. Write rate = 59.65 MB/s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=2.147 GB. Write rate = 58.04 MB/s
btape: btape.c:379-0 Total Volume bytes=6.442 GB. Total Write rate = 58.56 MB/s

btape: btape.c:959-0 Begin writing 3 files of 4.294 GB with blocks of 64512 bytes.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=4.295 GB. Write rate = 64.10 MB/s
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=4.295 GB. Write rate = 61.35 MB/s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO_0" (/dev/nsa1)
btape: btape.c:405-0 Volume bytes=4.295 GB. Write rate = 64.10 MB/s
btape: btape.c:379-0 Total Volume bytes=12.88 GB. Total Write rate = 63.16 MB/s

*
Website Pin Facebook Twitter Myspace Friendfeed Technorati del.icio.us Digg Google StumbleUpon Premium Responsive