Programmatically profile memory usage on multiple VIs

I need to programmatically profile the memory usage (daily) on a set of designated VIs and record the results for future comparison. How can I configure the profiler to start, then run a sub VI, and then stop the profiler? Also, how can I save the results into a spreadsheet?

Thanks for the reply Stephanie. What I need to do, however, is programmatically set up the Memory Profiler (Tools>>Profile>>Performance and Memory and then select the "Profile memory usage" checkbox and then select the "Memory usage" checkbox), start it, programmatically run my selection of sub VIs, and then stop the profiler, and then save the data to a specific location. All of this has to happen without input from a user. It will run automatically at pre-determined intervals.
Understanding how to programmatically set up and run the profiler is where I need help. I couldn't find any functions that dealt with the memory profiler.

Similar Messages

JMX programmatically control memory usage

Hi,
I would like a server to programmatically receive updates concerning the memory usage of its clients. JMX seems to be able to do this. I have not found an example on how to do this programmatically.
Is there an easier way to do this other than using JMX? If not where can i start and learn how to do this? I have very little time and there is a sea of JMX tutorials,articles and code sample -unfortunately not relevant to what i need to do.
Can somebody at least guide me to some resources specific to my purpose?
Thanks

String jmxUrl = String.format("service:jmx:rmi:///jndi/rmi://%s:%s/jmxrmi", server, port);
MBeanServerConnection con = JMXConnectorFactory.connect(new JMXServiceURL(jmxUrl), null).getMBeanServerConnection();
List<MemoryPoolMXBean> pools = new ArrayList<MemoryPoolMXBean>();
Set<ObjectInstance> beans = null;
try {
     beans = con.queryMBeans(new ObjectName("java.lang:type=MemoryPool,name=*"), null);
} catch (MalformedObjectNameException e) {
     e.printStackTrace();
for (ObjectInstance bean : beans) {
     pools.add(ManagementFactory.newPlatformMXBeanProxy(con, bean.getObjectName().toString(), MemoryPoolMXBean.class));
}Message was edited by:
octoberdaniel
Message was edited by:
octoberdaniel

Mbean for Memory Usage

Hello!
I need to monitor programmatically the memory usage of the Tomcat server. Can I implement it via MBeans and if yes, which MBean should I use? Thanks.

Hi,
I do not think this is possible. What you can monitor with the java.lang MXBeans is the
JVM memory as seen by the garbage collector.
You can use tools like VisualVM to try to figure out where objects have been allocated,
if this is what you need.
http://visualvm.dev.java.net/
hope this helps,
-- daniel
http://blogs.sun.com/jmxetc

Memory usage/freeze/crash modifying multiple objects

I'm getting Labview hanging issues when I try to modify front panel objects while editing (not running). It seems to be a general problem but this is the current scenario. Many charts on my front panel (over thirty), so I multiple select, and RClick>Properties. Watching Labview in Task Manager, I watch the Memory usage climb from about 90MB to 600MB. And it takes a minute at least! I can then change properties (plot scale ranges), and after more pausing, the dialog closes. Soon after, I'll get a fatal error and LV crashes. Something wrong here; I thought maybe it's my computer, but how can it take 0.5GB to load 30 chart property sets? Core i5, LV2011, Win7.

johnsold wrote:
Do you have the chart history lengths set to large values (many MB)? Do you have significant amounts of data saved as default in the charts?
Try clearing the charts, one at a time if necessary, first.
Charts have internal buffers. So LV may be trying to make backup copies so that you can undo if you change your mind. Charts are generally not a good way to manage large amounts of data. I use as a rule of thumb: Do not keeping more data in a chart than the number of pixels in its width.
Lynn
I aggree that crashing could be due to the amount of data in the charts. Try clearing them and saving the cleared chart as the default before doing the multiple object selection.
I guess I live a more dangerous life-style that Lynn in that I'll allow more data points than pixels simply because LV is "SO DAMN GOOD" at rendering down the data and supporting zooming. "In the old days" it was a common technique to reduce the data sets presented to charts to avaoid killing the CPU. So Lynn's "rule of thumb" is consistent with history. modern CPU can handle the abuse much better now so I can get away with living close to the edge.
Sharing thoughts,
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Extremely high memory usage after upgrading to Firefox 12

After I upgraded to Firefox 12, I began frequently experiencing Firefox memory usage ballooning extremely high (2-3GB after a few minutes of light browsing). Sometimes it will drop back down to a more reasonable level (a few hundred MB), sometimes it hangs (presumably while trying to garbage collect everything), and sometimes it crashes. Usually the crashing thread cannot be determined, but when it can be, it is in the garbage collection code ( [https://crash-stats.mozilla.com/report/list?signature=js%3A%3Agc%3A%3AMarkChildren%28JSTracer*%2C+js%3A%3Atypes%3A%3ATypeObject*%29] ).
I was able to capture an about:memory report when Firefox had gotten to about 1.5 GB and have attached an image.
A couple of things I've tried. I have lots of tabs open (though the Don't load tabs until selected option is enabled), so I copied my profile, kept all my extensions enabled, but closed all my tabs. I then left a page open to http://news.google.com/ and it ran fine for several days, whereas my original profile crashes multiple times a day.
I also tried disabling most of my extensions, leaving the following extensions that I refuse to browse without:
Adblock Plus
BetterPrivacy
NoScript
PasswordMaker
Perspectives
Priv3
However, the problem still happened in that case.
Don't know if any of this helps or not. I'm looking forward to trying Firefox 13 when it comes out.

hello, thanks for reporting back with detailed information.
from a brief look at your extensions i don't recognize any known (to me at least) memory leaking ones. in the last weeks there were also reports about the java plugin causing high memory consumption in combination with firefox 12 - in case you have it installed in firefox > addons > plugins try disabling it for a few days & test how firefox is behaving with many tabs.
& although probably not related to the memory problems you could update your graphics driver to get better results with hardware acceleration in firefox - this is the latest driver by intel for your model & os:
[http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=21135&lang=eng&OSVersion=Windows%207%20%2864-bit%29*&DownloadType=Drivers]

High memory usage when many tabs are open (and closed)

When I open Firefox the memory usage is about 70-100 MB RAM. When I'm working with Firefox I often open 15-20 tabs at once, then I close them and open others. Memory usage increaes up to 450 - 500 MB RAM. After closing the tabs the usage usually decreases, but after sometime. It starts decreasing very slow and never comes back to the level from the beginning. After few hours of work Firefox uses about 400 MB RAM even if one tab is open. First I thought it's because of my plugins (Firebug, Speed Dial, Adlock Plus) but I've checked it and it's not. I reinstalled Firefox but the problem occurs as well. I'm not sure if it's normal. Could you help me, please?

Hi,
Not an exact answer but please [http://kb.mozillazine.org/Reducing_memory_usage_(Firefox) see this.] The KB article ponders through various general situations which may or may not be applicable to specific instances but nevertheless could be helpful.
Useful links:
[https://support.mozilla.com/en-US/kb/Options%20window All about Tools > Options]
[http://kb.mozillazine.org/About:config Going beyond Tools > Options - about:config]
[http://kb.mozillazine.org/About:config_entries about:config Entries]
[https://addons.mozilla.org/en-US/firefox/addon/whats-that-preference/ What's That Preference? add-on] - Quickly decode about:config entries - After installation, go inside about:config, right-click any preference, enable (tick) MozillaZine Results to Panel and again right-click a pref and choose MozillaZine Reference to begin with.
[https://support.mozilla.com/en-US/kb/Keyboard%20shortcuts Keyboard Shortcuts]
[http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder & Files]
[https://support.mozilla.com/en-US/kb/Safe%20Mode Safe Mode]
[http://kb.mozillazine.org/Problematic_extensions Problematic Extensions/Add-ons]
[https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes Troubleshooting Extensions and Themes]

Memory usage of excel stays high after Macro is executed and excel crashes after trying to close it

Hi,
I'm trying to resolve an issue with an excel based tool. The macros retrieve data from an Oracle database and do calculations with the data. They also open and write into files in the same directory. The macros all run and finish the calculations. I can
continue to use and modify the sheet. I can also close the workbook, however excel memory usage I see in the windows Task manager stays elevated.If I close Excel it says: Excel stopped working and then it tries to recover information...
I assume something in the macro did not finish properly and memory was not released. I would like to check what is still open (connection, stream or any other object) when I close the workbook I would like to have a list of all still used memory. Is there
a possibility to do so.
Here the code I'm using, its reduced to functions which open something. Functions
get_v_tools() and get_change_tools() are same as get_client_positions().
Public conODBC As New ADODB.Connection
Public myPath As String
Sub get_positions()
Dim Src As range, dst As range
Dim lastRow As Integer
Dim myPath As String
lastRow = Sheets("SQL_DATA").Cells(Sheets("SQL_DATA").rows.Count, "A").End(xlUp).Row
Sheets("SQL_DATA").range("A2:AD" & lastRow + 1).ClearContents
Sheets("SQL_DATA").range("AG2:BE" & lastRow + 2).ClearContents
Sheets("SQL_DATA").range("AE3:AF" & lastRow + 2).ClearContents
k = Sheets("ToolsList").Cells(Sheets("ToolsList").rows.Count, "A").End(xlUp).Row + 1
Sheets("ToolsList").range("A2:M" & k).ClearContents
'open connection
Call open_connection
lastRow = Sheets("SQL_DATA").Cells(Sheets("SQL_DATA").rows.Count, "A").End(xlUp).Row
If lastRow < 2 Then GoTo ErrorHandling
'copy bs price check multiplications
Set Src = Sheets("SQL_DATA").range("AE2:AF2")
Set dst = Worksheets("SQL_DATA").range("AE2").Resize(lastRow - 1, Src.columns.Count)
dst.Formula = Src.Formula
On Error GoTo ErrorHandling
'new prices are calculated
newPrice_calculate (lastRow)
Calculate
myPath = ThisWorkbook.Path
'Refresh pivot table in Position Manager
Sheets("Position Manager").PivotTables("PivotTable3").ChangePivotCache ActiveWorkbook. _
PivotCaches.Create(SourceType:=xlDatabase, SourceData:= _
myPath & "\[Position_Manager_v1.0.xlsm]SQL_DATA!R1C2:R" & lastRow & "C31" _
, Version:=xlPivotTableVersion14)
ErrorHandling:
Set Src = Nothing
Set dst = Nothing
If conODBC.State <> 0 Then
conODBC.Close
End If
End Sub
Sub open_connection()
Dim sql_data, sql_data_change, sql_data_v As Variant
Dim wdth, TotalColumns, startRow As Integer
Dim rst As New ADODB.Recordset
Errorcode = 0
On Error GoTo ErrorHandling
Errorcode = 1
With conODBC
.Provider = "OraOLEDB.Oracle.1"
.ConnectionString = "Password=" & pswrd & "; Persist Security Info=True;User ID= " & UserName & "; Data Source=" & DataSource
.CursorLocation = adUseClient
.Open
.CommandTimeout = 300
End With
startRow = Sheets("SQL_DATA").Cells(Sheets("SQL_DATA").rows.Count, "A").End(xlUp).Row + 1
sql_data = get_client_positions(conODBC, rst)
wdth = UBound(sql_data, 1)
Sheets("SQL_DATA").range("A" & startRow & ":AA" & wdth + startRow - 1).Value = sql_data
'Run change tools instruments
startRow = Sheets("ToolsList").Cells(Sheets("ToolsList").rows.Count, "A").End(xlUp).Row + 1
sql_data_change = get_change_tools(conODBC, rst)
wdth = UBound(sql_data_change, 1)
Sheets("ToolsList").range("A" & startRow & ":M" & wdth + startRow - 1).Value _
= sql_data_change
'open SQL for V tools instruments
startRow = Sheets("ToolsList").Cells(Sheets("ToolsList").rows.Count, "A").End(xlUp).Row + 1
sql_data_v = get_v_tools(conODBC, rst)
wdth = UBound(sql_data_v, 1)
Sheets("ToolsList").range("A" & startRow & ":L" & startRow + wdth - 1).Value = sql_data_v
conODBC.Close
ErrorHandling:
If rst.State <> 0 Then
rst.Close
End If
Set rst = Nothing
End Sub
Private Function get_client_positions(conODBC As ADODB.Connection, rst_posi As ADODB.Recordset) As Variant
Dim sql_data As Variant
Dim objCommand As ADODB.Command
Dim sql As String
Dim records, TotalColumns As Integer
On Error GoTo ErrorHandling
Set objCommand = New ADODB.Command
sql = read_sql()
With objCommand
.ActiveConnection = conODBC 'connection for the commands
.CommandType = adCmdText
.CommandText = sql 'Sql statement from the function
.Prepared = True
.CommandTimeout = 600
End With
Set rst_posi = objCommand.Execute
TotalColumns = rst_posi.Fields.Count
records = rst_posi.RecordCount
ReDim sql_data(1 To records, 1 To TotalColumns)
If TotalColumns = 0 Or records = 0 Then GoTo ErrorHandling
If TotalColumns <> 27 Then GoTo ErrorHandling
If rst_posi.EOF Then GoTo ErrorHandling
l = 1
Do While Not rst_posi.EOF
For i = 0 To TotalColumns - 1
sql_data(l, i + 1) = rst_posi.Fields(i)
Next i
l = l + 1
rst_posi.MoveNext
Loop
ErrorHandling:
rst_posi.Close
Set rst_posi = Nothing
Set objCommand = Nothing
get_client_positions = sql_data
End Function
Private Function read_sql() As String
Dim sqlFile As String, sqlQuery, Line As String
Dim query_dt As String, client As String, account As String
Dim GRP_ID, GRP_SPLIT_ID As String
Dim fso, stream As Object
Set fso = CreateObject("Scripting.FileSystemObject")
client = Worksheets("Cover").range("C9").Value
query_dt = Sheets("Cover").range("C7").Value
GRP_ID = Sheets("Cover").range("C3").Value
GRP_SPLIT_ID = Sheets("Cover").range("C5").Value
account = Sheets("Cover").range("C11").Value
sqlFile = Sheets("Cover").range("C15").Value
Open sqlFile For Input As #1
Do Until EOF(1)
Line Input #1, Line
sqlQuery = sqlQuery & vbCrLf & Line
Loop
Close
' Replace placeholders in the SQL
sqlQuery = Replace(sqlQuery, "myClent", client)
sqlQuery = Replace(sqlQuery, "01/01/9999", query_dt)
sqlQuery = Replace(sqlQuery, "54747743", GRP_ID)
If GRP_SPLIT_ID <> "" Then
sqlQuery = Replace(sqlQuery, "7754843", GRP_SPLIT_ID)
Else
sqlQuery = Replace(sqlQuery, "AND POS.GRP_SPLIT_ID = 7754843", "")
End If
If account = "ZZ" Then
sqlQuery = Replace(sqlQuery, "AND AC.ACCNT_NAME = 'ZZ'", "")
Else
sqlQuery = Replace(sqlQuery, "ZZ", account)
End If
' Create a TextStream to check SQL Query
sql = sqlQuery
myPath = ThisWorkbook.Path
Set stream = fso.CreateTextFile(myPath & "\SQL\LastQuery.txt", True)
stream.Write sql
stream.Close
Set fso = Nothing
Set stream = Nothing
read_sql = sqlQuery
End Function

Thanks Starain,
that's what I did the last days and found that the problem is in the
newPrice_calculate (lastRow)
function. This function retrieves data (sets it as arrays) which was correctly pasted into the sheet, loops through all rows and does math/calendar calculations with cell values using an Add-In("Quantlib")
Public errorMessage as String
Sub newPrice_calculate(lastRow)
Dim Type() As Variant
Dim Id() As Variant
Dim Price() As Variant
Dim daysTo() As Variant
Dim fx() As Variant
Dim interest() As Variant
Dim ObjCalend as Variant
Dim newPrice as Variant
On Error GoTo Catch
interest = Sheets("SQL_DATA").range("V2:V" & lastRow).Value
Type = Sheets("SQL_DATA").range("L2:L" & lastRow).Value Id = Sheets("SQL_DATA").range("M2:M" & lastRow).Value Price = Sheets("SQL_DATA").range("T2:T" & lastRow).Value
daysTo = Sheets("SQL_DATA").range("K2:K" & lastRow).Value
fx = Sheets("SQL_DATA").range("U2:U" & lastRow).Value
qlError = 1
For i = 2 To lastRow
If (i, 1) = "LG" Then
'set something - nothing spectacular like
interest(i, 1) = 0
daysTo(i , 1) = 0
Else
adjTime = Sqr(daysTo(i, 1) / 365)
ObjCalend(i,1) =Application.Run("qlCalendarHolidaysList", _
"CalObj", ... , .... other input parameters)
If IsError(ObjCalend(i,1)) Then GoTo Catch
'other calendar calcs
newPrice(i,1) = Application.Run( 'quantLib calcs)
End If
Catch:
Select Case qlError
Case 1
errorMessage = errorMessage & " QuantLibXL Cal Error at: " & i & " " & vbNewLine & Err.Description
ObjCalend(i,1) (i, 1) = "N/A"
End Select
Next i
Sheets("SQL_DATA").range("AB2:AB" & lastRow).Value = newPrice
'Sheets("SQL_DATA").range("AA2:AA" & lastRow).Value = daysTo
' erase and set to nothing all arrays and objects
Erase Type
Erase id
Erase Price
Set newPrice = Nothing
Is there a possibility to clean everything in:
Private Sub Workbook_BeforeClose(Cancel As Boolean)
End Sub
Thanks in advance
Mark

Norton reports high memory usage with firefox and it crashes often

Norton antivirus 2011 has pop up warnings reporting high memory usage from Firefox. I have been getting theem often and my computer is crashing often after those pop up warnings. Thanks

Safe mode did not help.
I have disabled ALL extensions and plug-ins, but the problem with "zig-zag" memory usage still remains (I've not tried to leave browser open for the night yet).
I think I'll do clean reinstall with completely new empty profile (without sync'ed information) to try this out. If this works, I'll start adding stuff (configuration, sync, features, etc) to see what causes the problem.

Very high memory usage with Yahoo Mail

After using Yahoo Mail for an hour or so my memory usage increases to a very high level.
Just now, after reading and deleting about 50 e-mails (newsletters etc.) I noticed Firefox 17 running slowly and checked the memory usage in Windows Task Manager (I am using XP) and it was 1.2 Gb. My older laptop only has 2 Gb of RAM. Yahoo Mail was the only thing open at the time.
I never notice this problem with Gmail which I mainly use. However I use Yahoo Mail for quite a few newsletters etc. that are less important and which I only check once a week or so.
I found the following bug report about 3 years old which almost exactly describes my problem.
https://bugzilla.mozilla.org/show_bug.cgi?id=506771
But this report involves a much earlier Firefox version, and at the end it seems to say that the problem was fixed. However it well describes my current issue with Firefox 17, especially the continual increase in memory while using the up/down arrow keys to scroll through Yahoo e-mails.
Is this normal to have to shut down and reopen Firefox every hour or so to clean out the memory? For some reason I only notice this when using Yahoo Mail. After using many other sites and having multiple tabs open for several hours I rarely reach that kind of memory usage. About the highest I've seen with other sites after a couple of hours is 600 Kb which is roughly when I start notice slower response times.

See also:
*https://support.mozilla.org/kb/firefox-uses-too-much-memory-ram
Start Firefox in <u>[[Safe Mode|Safe Mode]]</u> to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).
*Do not click the Reset button on the Safe mode start window or otherwise make changes.
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

The firefox doesnt open because it has high memory usage

I use firefox normally but have started seeing issues with the firefox version 3.6.13 and when i reopen the firefox it says " Firefox is already running " when i check the memory usage it is using most of the CPU usage and memory ~ 800 K or even more . I have to kill the firefox using the Taskmanager each time and then open firefox

Safe mode did not help.
I have disabled ALL extensions and plug-ins, but the problem with "zig-zag" memory usage still remains (I've not tried to leave browser open for the night yet).
I think I'll do clean reinstall with completely new empty profile (without sync'ed information) to try this out. If this works, I'll start adding stuff (configuration, sync, features, etc) to see what causes the problem.

High disk usage/high memory usage.

i keep getting high memory usage and high disk usage in ps cs6.
its slow when i open a file. how can i solve this problem.
thank you.
philip.

Not to put too fine a point on it, but more than what? More RAM is almost always better, but you haven't answered most of the questions posed here. The answer might be different if you have 2 GB of RAM or 32 GB of RAM already. A 9 megapixel document could get rather large with a lot of layers, but again you've neglected to give any hard info about its size.
Regarding your video card, that's a bit of a judgment call you need to make. For Photoshop CS6 I currently advise people to try to get a video card that gets a score of 1000 or better on this benchmark: http://www.videocardbenchmark.net/high_end_gpus.html
Video card speed will matter when you're editing those 3D components and video card VRAM will also matter, but possibly even more importantly your GeForce 320 is a bit old, and nVidia may just not be doing their best driver work for it any more.
Everything in general will run more smoothly with a powerful modern video card. I like to recommend a VisionTek ATI Radeon HD 7750 - or if the computer power supply and your budget allow, the even more powerful 7850. VisionTek does a very good job with their hardware, IMO, and it comes with a lifetime guarantee.
Keep in mind that if you switch from nVidia to ATI or vice versa, you should carefully sweep your system to ensure all files from the old card are removed, then visit the web site of the new card's maker and download/install their latest display driver release.
Best of luck.
-Noel

Memory leaks- high memory usage svchost.exe

hello!
im having a kind of a similar problem. Im using a Q6600 with 4Gb of RAM running on Windows 7 x64. My physical memory usage history is 1.75GB idle but my CPU usage looks good ~ 0%.
In Windows Task Manager when i arranged the memory column, the process with the highest memory usge is svchost.exe with 116,572K. And i have 14 svchost.exe in my computer! I opened process exporer and check the legitimate of all those svchost.exe
and they are all legit. When i look at the properties of the highest svchost.exe in process explorer, the services which is running under it is as follows
AudioEndPointBuilder c:\Windows\System32\Audiosrv.dll
CscService c:\Windows\System32\cscsvc.dll
hidserv c:\Windows\System32\hidserv.dll
Netman c:\Windows\System32\netman.dll
PcaSvc c:\Windows\System32\pcasvc.dll
SysMain c:\Windows\System32\sysmail.dll
TrkWks c:\Windows\System32\trkwks.dll
UxSms c:\Windows\System32\uxsms.dll
wudfsvc c:\Windows\System32\WUDFSvc.dll
All are legit DLLS.
Is it normal to have 14 svchost.exe running at the same time(system, local service, network service in Task Manager)
and how can i reduce the memory usage of the svchost.exe?

Hi,
There can be multiple instances of Svchost.exe running at the same time. Each Svchost.exe session can contain a grouping of services, so that separate services can
be run depending on how and where Svchost.exe is started.
If you would like to reduce the usage of this service, I could share the following article with you:
Getting Started with SVCHOST.EXE Troubleshooting
PRF: High CPU (SVCHOST.EXE)
Hope it helps.
Alex Zhao
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

High RAM memory usage compared to other systems

I'm suffering with memory usage problems, only in open 2 tabs of facebook(it's only for example, any 'heavy' page freeze also) in firefox*(for example also, but this occur in chromium also) freeze computer.
I've 1GB of memory, it isn't big but also isn't very little.
I'm using XFCE with compiz (yes, compiz, since use a very lightweight openbox-based session doesn't help, then compiz...) when system start (after login) system is consuming 130MB approximately of RAM.
after 1 hour if close all open apps and see memory usage again consume is something about 350MB, "only solution" is reboot.
all applications(htop,free -m,xfce's system monitor...) that I've tried to monitor memory usage show above scenario, except the 'ps_mem' script in AUR.
in the 'ps_mem' script the result is following (with opera browser open, less memory offensive browser but I really prefer firefox):
Private + Shared = RAM used Program
88.0 KiB + 10.0 KiB = 98.0 KiB agetty
380.0 KiB + 34.5 KiB = 414.5 KiB sshd
408.0 KiB + 93.0 KiB = 501.0 KiB gpg-agent (2)
372.0 KiB + 142.0 KiB = 514.0 KiB avahi-daemon (2)
456.0 KiB + 60.0 KiB = 516.0 KiB systemd-logind
280.0 KiB + 261.0 KiB = 541.0 KiB sh
476.0 KiB + 103.5 KiB = 579.5 KiB xfconfd
476.0 KiB + 153.5 KiB = 629.5 KiB gvfsd
604.0 KiB + 34.5 KiB = 638.5 KiB systemd-udevd
588.0 KiB + 102.5 KiB = 690.5 KiB dbus-launch (3)
576.0 KiB + 119.5 KiB = 695.5 KiB sudo
668.0 KiB + 77.5 KiB = 745.5 KiB cups-browsed
620.0 KiB + 179.5 KiB = 799.5 KiB at-spi2-registryd
804.0 KiB + 67.0 KiB = 871.0 KiB htop
756.0 KiB + 131.0 KiB = 887.0 KiB gconfd-2
800.0 KiB + 126.0 KiB = 926.0 KiB upowerd
752.0 KiB + 183.5 KiB = 935.5 KiB xscreensaver
920.0 KiB + 85.0 KiB = 1.0 MiB cupsd
876.0 KiB + 241.0 KiB = 1.1 MiB gvfsd-fuse
692.0 KiB + 429.0 KiB = 1.1 MiB systemd-journald
880.0 KiB + 273.5 KiB = 1.1 MiB at-spi-bus-launcher
1.2 MiB + 125.0 KiB = 1.3 MiB udisksd
1.4 MiB + 486.5 KiB = 1.9 MiB dbus-daemon (5)
1.4 MiB + 533.5 KiB = 1.9 MiB panel-6-systray
1.5 MiB + 430.0 KiB = 2.0 MiB lightdm (2)
1.6 MiB + 572.0 KiB = 2.1 MiB xfce4-session
1.5 MiB + 683.0 KiB = 2.2 MiB panel-5-datetim
1.5 MiB + 706.5 KiB = 2.2 MiB panel-2-actions
1.6 MiB + 723.0 KiB = 2.3 MiB panel-4-systeml
2.0 MiB + 543.5 KiB = 2.5 MiB xfsettingsd
2.0 MiB + 579.5 KiB = 2.6 MiB systemd (3)
2.3 MiB + 815.0 KiB = 3.1 MiB emerald
2.8 MiB + 578.5 KiB = 3.3 MiB gnome-keyring-daemon (3)
3.2 MiB + 946.5 KiB = 4.1 MiB zsh (2)
16.1 MiB + -12144.0 KiB = 4.2 MiB polkitd
4.1 MiB + 465.0 KiB = 4.6 MiB notify-osd
4.5 MiB + 1.6 MiB = 6.2 MiB xfce4-panel
5.1 MiB + 1.2 MiB = 6.3 MiB panel-7-mixer
7.7 MiB + 1.4 MiB = 9.0 MiB xterm (2)
12.0 MiB + 636.0 KiB = 12.6 MiB opera:libflashp
24.3 MiB + -10774.5 KiB = 13.8 MiB Xorg
18.6 MiB + 1.1 MiB = 19.7 MiB gnome-do (2)
23.2 MiB + 2.4 MiB = 25.6 MiB compiz
168.4 MiB + 3.2 MiB = 171.7 MiB opera
320.1 MiB
=================================
as you can see in 'ps_mem' memory usage isn't nothing absurdly it's ok.
another example, this problem stop me make certain things, for example is impossible browsing in web while programming in eclipse, this is very uncomfortable.
other thing, this not occur in Windows XP, I can open more than 10 tabs in firefox, and eclipse open, etc...
any needing information, tell-me!
firefox*: with memory cache turned off in about:config
Last edited by hotvic (2013-08-12 17:42:21)

hotvic, could you please change the title to something more descriptive? 'memory problems' sounds like you have problems e.g. remembering / recalling things, which is not an Arch issue ;P
kenny3794 wrote:
I've had some limiting performance with browsers lately (Firefox and Chromium). I found it had a considerable cache size utilizing lots of fragmented space on my home directory. I cleared the cache and have since set a limit to the cache size of 30 MB for Firefox. Between multiple users across multiple browser sessions, I had at least 2 GB of cache data on my 10 GB home partition! So far (1 day), this has been helpful. Perhaps this could help you also?
Ken
OP is talking about RAM, not HDD space.

How can I fix a drastic and sudden increase in memory usage?

Before I start, I've already been having slight issues since the middle of last year, but I thought nothing of it. Firefox starting up using a good chunk of memory was normal, and I could run it alongside my other programs just fine. However, about 3 or 4 days ago, Firefox has started to spike in memory usage, to the point where it slows my entire computer down, will not load pages, and it's generally a mess. I always have to force close it, too, because whenever I close it conventionally, it's still open in the background. I've been having the background issue for a few months, but it's never been a large problem until the last few days. I had thought, at first, that it was the result of some programs that got installed as part of another installer. I had no issue with the installer, considering it came from a trusted forum for game design on an official topic, from a veteran member. However, it installed multiple toolbars and multiple programs. I went through all of them, uninstalled them, cleared my registry, everything was gone. However, this memory problem reared its ugly head, later. I uninstalled, reinstalled. Didn't work. I tried to reset firefox, but it stayed open in the background, and I could not reset it. I disabled my addons (ones I've been using for over a year, now), nothing. I tried to open Firefox with all addons disabled, but it stayed open in the background and refused to re-open properly. I'm actually on another browser right now because Firefox is no longer working for much of anything... I also put a couple of attachments up to show the increase in question. It starts at around 270,000 K (though the screenshot shows around 312,000), then after about 4 or 5 minutes on my homepage, shoots up to well over 1,000,000 and it basically stops functioning. If anyone has any additional steps they think I could take, I would appreciate it.

'''[https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Start Firefox in Safe Mode]''' {web link}
While you are in safe mode;
Type '''about:preferences#advanced'''<Enter> in the address bar.
Under '''Advanced,''' Select '''General.'''
Look for and turn off '''Use Hardware Acceleration'''.
Poke around safe web sites. Are there any problems?
'''[https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-ram Firefox uses too much memory (RAM) - How to fix]'''
This article describes how to make Firefox use less memory to make it run faster and prevent crashes.

Shared memory: apache memory usage in solaris 10

Hi people, I have setup a project for the apache userID and set the new equivalent of shmmax for the user via projadd. In apache I crank up StartServers to 100 but the RAM is soon exhausted - apache appears not to use shared memory under solaris 10. Under the same version of apache in solaris 9 I can fire up 100 apache startservers with little RAM usage. Any ideas what can cause this / what else I need to do? Thanks!

a) How or why does solaris choose to share memory
between processes
from the same program invoked multiple times
if that program has not
been specifically coded to use shared memory?Take a look at 'pmap -x' output for a process.
Basically it depend on where the memory comes from. If it's a page loaded from disk (executable, shared library) then the page begins life shared among all programs using the same page. So a small program with lots of shared libraries mapped may have a large memory footprint but have most of it shared.
If the page is written to, then a new copy is created that is no longer shared. If the program requests memory (malloc()), then the heap is grown and it gathers more private (non-shared) page mappings.
Simply: if we run pmap / ipcs we can see a
shared memory reference
for our oracle database and ldap server. There
is no entry for apache.
But the total memory usage is far far less than
all the apache procs'
individual memory totted up (all 100 of them, in
prstat.) So there is
some hidden sharing going on somewhere that
solaris(2.9) is doing,
but not showing in pmap or ipcs. (virtually
no swap is being used.)pmap -x should be showing you exactly which pages are shared and which are not.
b) Under solaris 10, each apache process takes up
precisely the
memory reported in prstat - add up the 100
apache memory details
and you get the total RAM in use. crank up the
number of procs any
more and you get out of memory errors so it
looks like prstat is
pretty good here. The question is - why on
solaris10 is apache not
'shared' but it is on solaris 9? We set up
all the usual project details
for this user, (jn /etc/projects) but I'm
guessing now that these project
tweaks where you explicitly set the shared
memory for a user only take
effect for programs explicitly coded to use
shared memory , e.g. the
oracle database, which correctly shows up a
shared memory reference
in ipcs .
We can fire up thousands of apaches on the 2.9
system without
running out of memory - both machines have the
same ram !
But the binary versions of apache are exactly
the same, and
the config directives are identical.
please tell me that there is something really
simple we have missed!On Solaris 10, do all the pages for one of the apache processes appear private? That would be really, really unusual.
Darren

Programmatically profile memory usage on multiple VIs

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