Matrix performance section

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==IV.A Comparison of NFSv4 vs. NFSv3 for common use cases==
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== Comparison of NFSv4 vs. NFSv3 for common use cases==
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!style="background: #ececec;"|'''ID
!style="background: #ececec;"|'''ID
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|Time to perform sequence of unique read/write operations
|Time to perform sequence of unique read/write operations
|Iozone
|Iozone
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|'''Open'''
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|'''In progress'''
|'''Bull'''
|'''Bull'''
|Done by Bull in 2004
|Done by Bull in 2004
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|Time to perform sequence of cacheable read/write operations
|Time to perform sequence of cacheable read/write operations
|Iozone
|Iozone
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|'''New'''
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|'''Open'''
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|'''Bull'''
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|Random reads/writes/opens from many clients to one server
|Random reads/writes/opens from many clients to one server
|Iozone
|Iozone
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|'''Open'''
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|'''In progress'''
|'''Bull'''
|'''Bull'''
|Done by Bull in 2004
|Done by Bull in 2004
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|'''New'''
|'''New'''
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|'''Tools does not exist'''
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|''Tools does not exist''.
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|IV.A.5
|IV.A.5
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|Iozone
|Iozone
|'''New'''
|'''New'''
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|'''Bull'''
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|''''''
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|Iozone
|Iozone
|'''New'''
|'''New'''
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|Bull
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|Metadata - directory scanning
|Metadata - directory scanning
|Iozone
|Iozone
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|'''Open'''
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|'''Done'''
|Bull
|Bull
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|Directory scanning over NFSv4 is analysed [http://nfsv4.bullopensource.org/tools/tests/page19.php here]. Time to stat a directory is O(n²) where n is the number of files in the directory.
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|IV.A.9
|IV.A.9
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|Iozone
|Iozone
|'''New'''
|'''New'''
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|Bull
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|IOZone
|IOZone
|'''New'''
|'''New'''
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|Bull
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|IV.A.11
|IV.A.11
|How many locks can be made and released over time
|How many locks can be made and released over time
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|FFsB
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|LTP
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|'''New'''
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|'''Open'''
|Bull
|Bull
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|Comparison of speeds attainable for different NIC cards
|Comparison of speeds attainable for different NIC cards
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|'''New'''
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== IV.B NFSv4 on TCP vs. RDMA ==
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== NFSv4 on TCP vs. RDMA ==
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== IV.C Test performance on different local filesystems ==
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== Test performance on different local filesystems ==
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|Analyze whether file system choice affects performance
|Analyze whether file system choice affects performance
|Iozone
|Iozone
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|'''Done'''
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|'''DONE'''
|'''Bull'''
|'''Bull'''
|[http://nfsv4.bullopensource.org/tools/tests/page2.php NFSv4 performances] do not depend on the local file-system used
|[http://nfsv4.bullopensource.org/tools/tests/page2.php NFSv4 performances] do not depend on the local file-system used
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|Test performance with Ext2 on server with metadata /acls
|Test performance with Ext2 on server with metadata /acls
|IOZone/FFsB
|IOZone/FFsB
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|'''New'''
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== IV.D Test perfomance on different cluster filesystems ==
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== Test perfomance on different cluster filesystems ==
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== IV.E Evaluation in various load scenarios ==
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== Evaluation in various load scenarios ==
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|'''In progress'''
|'''In progress'''
|Bull
|Bull
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|While most NFS functionnalities are not affected by the number of files (2 000 000 of empty files).
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|While most NFS functionnalities are not affected by the number of files (1 000 000 of empty files), some bash functions are not responding : ls (answer take more than 15 hours). This question will be splited in sub topics soon.
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|-
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|*IV.E.1
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*Sub topic 1
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|Test performance with large numbers of small (<4k) files - stat function ; empty files  -
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|addhoc tool
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|'''Done'''
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|Bull
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|Stat answer is O(n²). More details [http://nfsv4.bullopensource.org/tools/tests/page19.php here]
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|-
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|IV.E.1
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*Sub topic 2
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|Test performance with large numbers of small (<4k) files - Open function ; empty files -
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|addhoc tool
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|'''Near done'''
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|Bull
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|Open function is O(n). There is a bottle neck for n=1620000. More details [http://nfsv4.bullopensource.org/tools/tests/page20.php here]. Comparisons with [http://nfsv4.bullopensource.org/tools/tests/page21.php local file system] and [http://nfsv4.bullopensource.org/tools/tests/page22.php NFSv3].
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|IV.E.2
|IV.E.2
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|'''Open'''
|'''Open'''
|Bull
|Bull
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|Goals need some clarifications
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|Goals need clarifications: are we manipulating files (acl/metadatas/moving...) or reading/writing files?
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|IV.E.3
|IV.E.3
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|Mail/user dir
|Mail/user dir
|'''New'''
|'''New'''
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|Bull
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|IV.E.5
|IV.E.5
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|NFS "Cluster" scenario with 1000+ clients and several servers
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|NFS "Cluster" scenario with 1000 clients and several servers
|Film industry, HPC or visualization workload
|Film industry, HPC or visualization workload
|'''New'''
|'''New'''
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|IV.E.6
|IV.E.6
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|NFS front end with cluster backend; 100+ clients
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|NFS front end with cluster backend; 100 clients
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|'''New'''
|'''New'''
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|IV.E.7
|IV.E.7
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|Pure cluster; 100+ clients
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|Pure cluster; 100 clients
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|'''New'''
|'''New'''
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!style="background: #ececec;"|'''owner'''
!style="background: #ececec;"|'''notes'''
!style="background: #ececec;"|'''notes'''
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|-
|IV.F.1
|IV.F.1
|Measure performance of server when in limited resource situations :
|Measure performance of server when in limited resource situations :
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== Scalability (performance) ==
== Scalability (performance) ==
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!style="background: #ececec;"|'''test'''
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!style="background: #ececec;"|'''tool test'''
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!style="background: #ececec;"|'''notes'''
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|IV.G.
|IV.G.
|Verify server scalability with clients generating various basic requests (ACCESS, GETATTR, et al)
|Verify server scalability with clients generating various basic requests (ACCESS, GETATTR, et al)
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|Measure effects of scaling up number of connections
|Measure effects of scaling up number of connections
|IOZone
|IOZone
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|'''New'''
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|'''Open'''
|Bull
|Bull
|SMP - Measure number of mounts per second on client and server
|SMP - Measure number of mounts per second on client and server
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|IV.G.6
|IV.G.6
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|Measure effects when increasing size of on-the-wire NFS read or write operations :
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*Mount options from the client side; find optimal settings
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*Measure for stable latency behavior
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|Iozone
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|'''Open'''
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|Bull
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|IV.G.7
|IV.G.7
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|Measure performance when scaling CPU count per node on SMP
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|IV.G.8
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|IV.G.9
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|IV.G.10
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Latest revision as of 13:30, 14 July 2007

Contents

Comparison of NFSv4 vs. NFSv3 for common use cases

ID test tool test status owner notes
IV.A.1 Time to perform sequence of unique read/write operations Iozone In progress Bull Done by Bull in 2004
IV.A.2 Time to perform sequence of cacheable read/write operations Iozone Open Bull
IV.A.3 Random reads/writes/opens from many clients to one server Iozone In progress Bull Done by Bull in 2004
IV.A.4 Industry standard loads SpecSFS, Specweb99 New Tools does not exist.
IV.A.5 Time to read file from beginning to end and then rewrite it IOzone In progress Bull Part of IOZone standard tests
IV.A.6 Time for appending info to a log file sporadically over time Iozone New '
IV.A.7 Metadata - open/close intensive workload Iozone New
IV.A.8 Metadata - directory scanning Iozone Done Bull Directory scanning over NFSv4 is analysed here. Time to stat a directory is O(n²) where n is the number of files in the directory.
IV.A.9 Metadata - create/delete Iozone New
IV.A.10 Metadata - changing attributes (chown, chmod) while dir scanning IOZone New
IV.A.11 How many locks can be made and released over time LTP Open Bull
IV.A.12 Comparison of speeds attainable for different NIC cards New

NFSv4 on TCP vs. RDMA

ID test tool test status owner notes
IV.B Compare latency, throughput, etc. of NFSv4 on TCP vs. RDMA New Only prototypes exist currently; possibly will be more fully implemented by end of 2005

Test performance on different local filesystems

ID test tool test status owner notes
IV.C.1 Analyze whether file system choice affects performance Iozone DONE Bull NFSv4 performances do not depend on the local file-system used
IV.C.2 Test performance with Ext2 on server with metadata /acls IOZone/FFsB New
IV.C.3 Test performance with ext3 on server with metadata / acls IOZone/FFsB New
IV.C.4 Test performance with Reiser3 on server with metadata / acls IOZone/FFsB New
IV.C.5 Test performance with xfs on server with metadata / acls IOZone/FFsB New
IV.C.6 Test performance with jfs on server with metadata / acls IOZone/FFsB New
IV.C.7 Test performance with Reiser4 on server with metadata /acls IOZone/FFsB New

Test perfomance on different cluster filesystems

ID test tool test status owner notes
IV.D.1 Test performance when using GFS cluster file system New
IV.D.2 Test performance when using Luster cluster file system New
IV.D.3 Test performance when using GPFS cluster file system New
IV.D.4 Test performance when using Polyserve cluster file system New

Evaluation in various load scenarios

ID test tool test status owner notes
IV.E.1 Test performance with large numbers of small (<4k) files addhoc tool In progress Bull While most NFS functionnalities are not affected by the number of files (2 000 000 of empty files).
*IV.E.1 
*Sub topic 1
Test performance with large numbers of small (<4k) files - stat function ; empty files - addhoc tool Done Bull Stat answer is O(n²). More details here
IV.E.1 
*Sub topic 2
Test performance with large numbers of small (<4k) files - Open function ; empty files - addhoc tool Near done Bull Open function is O(n). There is a bottle neck for n=1620000. More details here. Comparisons with local file system and NFSv3.
IV.E.2 Test performance with a few very large (>1G) files IOzone Open Bull Goals need clarifications: are we manipulating files (acl/metadatas/moving...) or reading/writing files?
IV.E.3 4-16 clients generating high load on 1 server in lab environment Mail/user dir New
IV.E.4 2000-5000 clients on 5-10 servers in production environment Clusters New NetApps
IV.E.5 NFS "Cluster" scenario with 1000 clients and several servers Film industry, HPC or visualization workload New
IV.E.6 NFS front end with cluster backend; 100 clients New
IV.E.7 Pure cluster; 100 clients New

Evaluation in stress scenarios

ID test tool test status owner notes
IV.F.1 Measure performance of server when in limited resource situations :
  • Low memory / heavy swap space usage
  • High inode count situations
New
IV.F.2 Measure performance of client when in limited resource situations :
  • Low memory / heavy swap space usage
  • Low/saturated network bandwidth
New
IV.F.3 Graceful failure mode New See Chuck for more info
IV.F.4 Measure memory/network/CPU efficiency of client for fixed workload IOzone - FFsB In progress Bull

Scalability (performance)

ID test tool test status owner notes
IV.G. Verify server scalability with clients generating various basic requests (ACCESS, GETATTR, et al) Iozone New
IV.G.2 Verify server scalability with clients using compound requests Iozone New
IV.G.3 Measure effects of scaling up number of connections IOZone Open Bull SMP - Measure number of mounts per second on client and server
IV.G.4 Measure effects of increasing number of files Addhoc tool Open Bull
IV.G.5 Measure effects of increasing file size (with/without cache) IOzone Open Bull
IV.G.6 Measure effects when increasing size of on-the-wire NFS read or write operations :
  • Mount options from the client side; find optimal settings
  • Measure for stable latency behavior
Iozone Open Bull
IV.G.7 Measure performance when scaling CPU count per node on SMP
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