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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

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Trace Name	Details	Related Tools	Year Recorded	Timespan	Record Count	File Size
Systor '17 Traces	Traces from Understanding storage traffic characteristics on enterprise virtual desktop infrastructure by Chunghan Lee et al., Fujitsu Laboratories Ltd., (SYSTOR '17) Long Description 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) Short Description		2016	about 1 month	4.19 Billion	51.9 GB
Slacker Traces	These are block traces related to the paper Slacker: Fast Distribution with Lazy Docker Containers published in FAST 2016. Long Description 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. Short Description		2015	14 minutes		3.37 MB
Nexus 5 Smartphone Traces	This is a collection of 25 traces of 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". Long Description 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". Short Description	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!

Trace Name	Details	Related Tools	Year Recorded	Timespan	Record Count	File Size
FIU Traces	Traces collected at FIU.	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	Traces of several production servers at Microsoft, as described in the IEEE International Symposium on Workload Characterization, 2008. Long Description 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. Short Description		2007-2008	4 months	1 Billion	18.2 GB
Microsoft Enterprise Traces	Traces collected at Microsoft using the event tracing for Windows framework.		2007-2008	4 months	2.6 Billion	25.1 GB
MSR Cambridge Traces	1-week block I/O traces of enterprise servers at Microsoft Long Description 1-week block I/O traces of enterprise servers at Microsoft Research Cambridge. The citation for the MSRC traces can be found here. Short Description		2007	8 days	434 Million	4.94 GB
Cello 1999	1999 traces of Cello server at HP labs. Long Description Disk traces taken from the cello server at HP labs in January through December of 1999. Short Description	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	1996 traces of Cello server at HP labs Long Description Disk traces take from the cello server at HP labs in September through November of 1996. Short Description	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	1992 traces of Cello server at HP labs Long Description Disk traces taken from the cello server at HP labs in April through June of 1992. Short Description	Software to process the SRT trace format can be downloaded from the tools section of this website.	1992	2 months		603 MB
HP LAJW	Data from the paper "UNIX disk access patterns" by Chris Ruemmler and John Wilkes Long Description OS version: HP-UX A.08.00 U Machine type: 9000/845 Short Description	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	1991 traces of Cello server at HP labs Long Description Disk traces taken from the cello server at HP labs in March through June of 1991. Short Description	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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