Hp XP Performance Advisor Software Manuel d'utilisateur

XPWatch and XPSketch Reference GuideThis guide is designed to help you understand and use the XPWatch and XPSketch tools. It describes the functionalc

XPWatch environmentThis section describes the software and hardware environment required to run XPWatch.Software environmentTable 1 lists the XPWatch

Figure 1 Working of XPWatch.XPWatch functions as follows:1. On starting XPWatch, the Array menu appears.2. Selecting the desired array displays the li

If you select this option, all the available LDEVs and RAID Groups are displayed. Select thedesired RAID Groups and LDEVs to collect and view their pe

2 Installing XPWatchThis section describes installing and uninstalling XPWatch. It also describes the various componentsof XPWatch.PrerequisitesThe fo

Figure 2 XP Performance Advisor logon screen.3. Enter your User Name and Password and click Sign In. The XP Performance Advisor Home screenappears.Fig

Figure 4 Table of Contents screen.5. From the Tools menu, select XPWatch from respective operating system to download the XPWatchzip file specific to

Uninstalling XPWatchTo remove XPWatch, delete the folder containing the XPWatch.exe file.ComponentsThe software components of XPWatch are:• XPWatch.ex

3 Working with XPWatch menus andcommandsThis section describes how to use the different commands, menus, and interfaces of XPWatch.CommandsThe XPWatch

FunctionOptionCom-mandTo view the next menu.NOTE:Enter c and not C.ContinuecTo view the next set of items, such as host groups, ports, RAIDGroups, and

• LDEV menu• Settings menuArray menuThe Array menu appears after you start XPWatch. This menu lists all the arrays that are connected tothe host.The A

Legal and notice information© Copyright 2010 Hewlett-Packard Development Company, L.P.Confidential computer software. Valid license from HP required f

Host groupsThe Host Groups screen lists the available host groups that are connected to the selected array. Thisscreen also displays all the available

1. Enter 2 and press the Enter key.The 50060b00002fd4fa host group is selected as shown in the following figure.NOTE:The selected host group is highli

Figure 11 shows the screen that appears after clearing the 50060b00002d24b4 host group.Figure 11 Clearing a Host Group.NOTE:The cleared host groups ar

Figure 12 Nickname menu.Assigning nicknamesThis section describes how to assign nicknames to a host group.For example, to assign a nickname to the 210

Figure 14 Nickname menu: Entering new nickname.5. Press the Enter key. The following screen, showing nickname as Host 02, appears.Figure 15 Nickname m

2. Press the Enter key. (Do not enter any new nickname)The Second Host Nickname is removed and the following screen appears.Port menuThe Port menu lis

Figure 16 Port menu.Table 8 describes the fields that appear in the Port menu.Table 8 Port menu — screen fieldsDescriptionScreen fieldSelection number

4. Select the required host and enter the c command.The Port menu showing all ports connected to the hosts is displayed.Pick LDEVs/RAID Groups selecti

Figure 18 RAID Group menu.Table 9 describes the fields that appear in the RAID Group menu.Table 9 RAID Group menu — screen fieldsDescriptionScreen fie

Viewing RAID Group menuThis screen appears when you select one of the following options from the Viewing Pick LDEVs/RAIDGroups Selection scheme:• Filt

Contents1 Introduction to XPWatch ... 9Overview ...

Viewing LDEV menuThis screen appears when you select the Filter RAID Groups by LDEVs option from the Viewing PickLDEVs/RAID Groups Selection Scheme.Se

Performance data collection settingsPerformance data collection settings enable you to modify the settings of the output screen. It alsoenables you to

Working with XPWatch menus and commands32

4 Viewing performance metrics in XPWatchThis section describes how to collect the performance data of HP XP Arrays and view the performancemetrics usi

d. Select the required RAID Groups.e. Enter the c command. The following message appears:Would you like to archive the performance data collected? (Y/

NOTE:If you enter N, the performance data is not saved in the .CSV format. However, you can viewthe performance data on the output screen.Understandin

DescriptionUnitPerformancemetricsMinimal I/O rate of the last 60 secondsIO/sMinIOMaximum I/O rate of the last 60 secondsIO/sMaxIOAverage I/O rate of t

RAID Group performance metricsTable 15 describes the RAID Group performance metrics.Table 15 RAID Group performance metricsDescriptionUnitPerformancem

DescriptionUnitPerformancemetricsCHA PCB Busy Time for CPU 1 (if installed)numberMP1CHA PCB Busy Time for CPU 2 (if installed)numberMP2CHA PCB Busy Ti

5 Introduction to XPSketchThis section gives an overview of XPSketch.OverviewXPSketch is a tool provided by HP to enable you to view the performance m

DKC performance metrics ... 385 Introduction to XPSke

Introduction to XPSketch40

6 Installing XPSketchThis chapter lists the supported environment for XPSketch and describes the installation for XPSketch.Supported Windows platforms

Figure 22 shows the XP Performance Advisor Logon screen.Figure 22 XP Performance Advisor Logon screen.3. Enter your user name and password. If you are

Figure 24 Table of Contents screen.6. On the XP PA Support screen, under Tools, click the XPSketch (Windows 32-bit) link to downloadthe XPSketch.zip f

NOTE:When you double-click Run.bat, sometimes XPSketch might not start immediately, or mightappear and disappear immediately. This is because the syst

7 Viewing performance metrics in XPSketchThis section describes loading the .csv file, setting the Java heap size value, and viewing performancemetric

Setting the Java heap size valueAt a time, the number of metrics that can be loaded in XPSketch depends on the minimum and maximumJava heap size value

Figure 26 Performance report generated using XPSketch.You can select multiple metrics at a time. Accordingly, multiple graphs are plotted in the Graph

Figure 27 Multiple graphs plotted for multiple metric selection.You can also view the Metrics Available, Samples Available, and Samples Displayed data

Table 18 describes the Port performance metrics.Table 18 Port performance metricsDescriptionPerformance MetricsAverage I/O rate of the last measuremen

Document conventions and symbols ... 65Index ...

DescriptionPerformance MetricsAverage ThroughputThroughput [KB/s]Average I/O Response TimeIO response time [ms]Back-end / Front-end I/O ratioBack-end

DescriptionPerformance MetricsWrite cache utilization [%] for CLPR0, max=70%Write cache utilization [%]XPWatch and XPSketch Reference Guide 51

Viewing performance metrics in XPSketch52

8 Working with charts in XPSketchThis section describes viewing, modifying, saving, and printing charts in XPSketch. It also describesrestoring the au

• Clear the Show Title checkbox if you do not want the chart title to be displayed.• Under the Plot tab:• Go to Appearance tab to change the appearanc

A XPWatch use case scenariosScenario 1: Port I/O spikeBusiness casePeriodic port I/O spikes are observed in XP Performance Advisor.ObjectiveLocate the

ObjectiveConfirm the observation using XPWatch.ResolutionIn this case, XPWatch can help you to isolate XP array’s performance from the application’spe

B Understanding write ratio in XPWatchThe following screen shows the performance of the entire RAID Group 01-03 being collected with theperformance of

= 100*(2/2)= 100*1= 100The Wr% is 100% because all the front-end I/Os on that RAID group are writes.NOTE:We can conclude all the front-end I/Os on the

C Relationship between LDEV I/O responsetime and Write ratioWe cannot establish a relationship between the LDEV I/O response time and Write ratio beca

FiguresWorking of XPWatch ... 111XP Performance Advisor lo

Relationship between LDEV I/O response time and Write ratio60

D Comparing LDEV response time metricsin XP Performance Advisor and XPWatchMaximum values of LDEV response time in XP PerformanceAdvisor and XPWatchTh

Comparing LDEV response time metrics in XP Performance Advisor and XPWatch62

9 Support and other resourcesContacting HPFor worldwide technical support information, see the HP support website at:http://www.hp.com/supportBefore c

http://www.hp.com/support/storagedocsurveyThank you for your time and your investment in HP storage products.Related informationDocumentsIn addition t

Document conventions and symbolsTable 23 Document conventionsElementConventionCross-reference links and e-mail addressesBlue text: Table 23Website add

Support and other resources66

IndexAArray menu, 19Averageread response time, 61write percentage, 57write response time, 61CCollection Update Interval, 31conventionsdocument, 65text

Portmenu, 25performance metrics, 35RRAID GroupFilter RAID Groups by LDEVs, 11Filtering RAID Groups by LDEVs, 33menu, 27performance metrics, 37Real-Tim

TablesXPWatch software environment ... 101XPWatch hardware environment .

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1 Introduction to XPWatchThis chapter describes the features of XPWatch and the environment required to run it.OverviewXPWatch is a command-line inter