Block I/O Traces

Block I/O Traces typically include block level (e.g., at the logical volume manager, disk driver, etc. level) and block protocol (e.g., SCSI, ATA, Fibre Channel) traces.

The following traces are free to download under the terms of the SNIA Trace Data Files Download License. Please note that cookies must be enabled within your browser in order to download traces.
For questions about downloading using a shell script, see Using Shell Scripts, and for more information about downloading using a Windows batch script, see Using Batch Scripts.


Displaying all 3 Traces


Trace Name Details Related Tools Year Recorded Timespan Record Count File Size Actions
Systor '17 Traces
Traces related to the paper Understanding storage traffic characteristics on enterprise virtual desktop infrastructure by Chunghan Lee, Tatsuo Kumano, Tatsuma Matsuki, Hiroshi Endo, Naoto Fukumoto, and Mariko Sugawara, Fujitsu Laboratories Ltd., appearing in Proceedings of the 10th ACM International Systems and Storage Conference (SYSTOR '17)
2016 about 1 month 4.19 Billion 51.9 GB
Slacker Traces
These traces were collected in 2016 by running blktrace on the HelloBench benchmark. These outputs are related to the paper Slacker: Fast Distribution with Lazy Docker Containers published in FAST 2016.
2015 14 minutes 3.37 MB
Nexus 5 Smartphone Traces
This is a collection of 25 traces consisting of 18 traces of singular smartphone applications and 7 traces of two smartphone applications running concurrently. All of these traces were run on a Nexus 5 smartphone. The study for which these traces were collected can be found in the paper "I/O Characteristics of Smartphone Applications and Their Implications for eMMC Design".
This trace has no related tools yet. 2014 6 months 400 Thousand 31.2 MB

Displaying all 3 Traces

View Historical Traces

WARNING: These traces are over 10 years old! They should not be used for modern research!

The following traces are free to download under the terms of the SNIA Trace Data Files Download License. Please note that cookies must be enabled within your browser in order to download traces.
For questions about downloading using a shell script, see Using Shell Scripts, and for more information about downloading using a Windows batch script, see Using Batch Scripts.

Trace Name Details Actions
FIU Traces These traces can be decoded using blkparse. This utility is available on all standard Linux systems. 2008-2009 3 months 475 Million 28.8 GB
Microsoft Production Server Traces
Because of the size of the traces, the BuildServer traces have been repackaged by IOTTA into eight zip files. The first seven files are divided into one for each of the first seven timestamped hours in the original traces. The last file contains traces of the remaining 18 traced hours, in which the activity was much lighter. All eight zip files contain the same Readme.* and Disclaimer files. They are designed so that if all are unpacked in the same directory, the original trace collection will be recreated.
2007-2008 4 months 1 Billion 18.2 GB
Microsoft Enterprise Traces 2007-2008 4 months 2.6 Billion 25.1 GB
MSR Cambridge Traces
1-week block I/O traces of enterprise servers at Microsoft Research Cambridge. The citation for the MSRC traces can be found here.
2007 8 days 434 Million 4.94 GB
SPC OLTP Application Traces
Two I/O traces from OLTP applications running at two large financial institutions. Due to access restrictions, these traces are hosted externaly.
1999 1 day 0 Bytes
SPC Search Engine Traces
Three I/O traces from a popular search engine. Due to access restrictions, these traces are hosted externally.
1999 1 day 0 Bytes
Cello 1999
Disk traces taken from the cello server at HP labs in January through December of 1999.

Software to process the SRT trace format can be downloaded from the tools section of this website.

1999-2000 12 months 30.7 GB
Cello 1996
Disk traces take from the cello server at HP labs in September through November of 1996.

Software to process the SRT trace format can be downloaded from the tools section of this website.

1996 3 months 4.94 GB
Cello 1992
Disk traces taken from the cello server at HP labs in April through June of 1992.

Software to process the SRT trace format can be downloaded from the tools section of this website.

1992 2 months 603 MB
HP LAJW
OS version: HP-UX A.08.00 U Machine type: 9000/845

Software to process the SRT trace format can be downloaded from the tools section of this website.

1992 2 months 8.08 MB
Cello 1991
Disk traces taken from the cello server at HP labs in March through June of 1991.

Software to process the SRT trace format can be downloaded from the tools section of this website.

1991 3 months 357 MB

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