Some kind of thread scheduling lag in 6.1sp2

I've got a 2000sp4 box with Web Server 6.1sp2 installed. I'm running ColdFusion MX as well. The machine is a dual-P4 3.2Ghz. with 4gb of RAM.
What I'm seeing is at random times, a user will request a page, and then be stuck waiting for a long time (think 10-30 seconds on average). Then, the next page request will load immediately.
The connection queue is peaking at like 6 connections. It's not a connection queue issue. Iny my performance monitor, when these 'lag spikes' hit, as they come down, I see our ColdFusion process take on a spike in requests, as if during this 'lag spike' all the connections get stuck somewhere and, once cleared, they all go through at once.
Both the ColdFusion and Sun One performance monitors show average request/response time at about 100ms.
I've tested this on a dev machine and seen that the Sun One performance monitor does include CF processing time in the "Total Response Time" that gets reported.
So since I'm only seeing about 150ms max for the "Total Response Time", that would seem to indicate my 'lag spike' is something that occurs at the point connections are accepted.
The 'lag spikes' are not limited to requests for CF pages. Images, static files, and even the performance monitor are susceptible to these 'lag spikes'.
One symptom that might be worth pointing out is that if I hit a 'lag spike' and simply stop my request, then re-request it (hit the reload button) the page will come up immediately.
There are 8 virtual servers on the box, each has only 1 acceptor thread. I see these lag spikes on virtual servers that have nobody else but myself connecting to them, so I don't think it's an acceptor thread issue.
KernelThreads is set to ON as setting it to OFF seems to make the web server virtually unresponsive.
NativePool:
Idle/Peak/Limit 1/1/64
Work Queue Length/Peak/Limit 0/0/256
I have never see the idle/peak values go above 1 for my NativePool. Is this "normal"? I do not have CF running in a separate thread pool.
Does anyone have any ideas or suggestions?
Thanks

A couple of things.
First, thanks for the tips. I was starting to suspect the network might be an issue (bad nic, bad router, something).
But netstat -s was showing an average of about .15% packet loss. For a web server that seems to be a pretty good value so I'm not sure.
I did, however, ask someone else to look at the server because I'd spent the whole week on just server performance and was going out of my mind. This second pair of eyes really helped as he found that the pagefile for the server was set at 2mb!? Still trying to figure out how that happened. But we increased the pagefile to a much better value. There wasn't an immediate change in performance, but over time the server appears to have begun to respond better.
Occasionally I still get these 'lag spikes' but nowhere near what they were and the delay is much smaller as well, which is probably being caused by something else entirely (like bad programming on my part, hah).

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Thread scheduling

Hi, I have some questions bout threads.
1) When it comes to thread scheduling, Java has no say in it, since thread scheduling is solely in a domain of operating system?
2)In preemptive environment, when thread with higher priority becomes runnable, runtime will cause lower priority thread to halt and higher priority thread to start executing. This chosen thread will run until one of the following conditions is true:
- a higher priority thread becomes "Runnable"
- it yields, or its run() method exits
- on systems that support time-slicing, its time has expired
a) Time slicing doesn't mean that every thread will get the same amount of time to run?
b)Will higher priority threads get more time and lower less!
c) Does Windows OS support time slicing?
3)What kind of environment is non-preemptive environment? The kind where threads with higher priority cant preempt lower priority threads? As I understand it, in those kind of environments there is a greater chance that some threads will never run. Why?
4)Why is under non-preemptive environment greater chance of having situation where one of the two threads with same priority will not get a chance to run?
bye

beginprog wrote:
1) When it comes to thread scheduling, Java has no say in it, since thread scheduling is solely in a domain of operating system?This is not strictly true. You can control when a thread is eligible to run, but you can't force a partiular thread to run. The JVM has some control over thread scheduling, but yes, it also interacts with the OS.
2)In preemptive environment, when thread with higher priority becomes runnable, runtime will cause lower priority thread to halt and higher priority thread to start executing. This chosen thread will run until one of the following conditions is true:
- a higher priority thread becomes "Runnable"
- it yields, or its run() method exits
- on systems that support time-slicing, its time has expired I don't think Java makes any such promises about its threads' priorities. You may be describing a general model, but in terms of the JVM scheduling its threads, higher priority threads will be preferred over lower priority ones, but the exact algorithm is left up to the implementation.
a) Time slicing doesn't mean that every thread will get the same amount of time to run? There are many ways to implement time slicing. It depends on the VM implementation and the OS.
b)Will higher priority threads get more time and lower less!Depends on the implementation.

Very slow MacBook Pro. Probably some kind of virus.

Hey guys,
I'm helping a friend of mien to repair her computer. Yesterday she wanted to watch a film online and on one of this sides she even clicked on updating her flash player. Afterwards the Mac didn't work anymore and after a restart continued very slow and she probably has some kind of virus. Even writing this text takes forever because the computer is so slow.
I've already done a system check with etrecheck and also tried to find the virus with avira. But this you also see in the report.
So It would be great if anyone could help us.
Problem description:
Very slow Mac. Probably some kind of virus.
EtreCheck version: 2.0.11 (98)
Report generated 21 de Novembro de 2014 às 11:26:42 GMT-2
Hardware Information: ℹ️
MacBook Pro (15-inch, Mid 2012) (Verified)
MacBook Pro - model: MacBookPro9,1
1 2.3 GHz Intel Core i7 CPU: 4-core
4 GB RAM Upgradeable
BANK 0/DIMM0
2 GB DDR3 1600 MHz ok
BANK 1/DIMM0
2 GB DDR3 1600 MHz ok
Bluetooth: Good - Handoff/Airdrop2 supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
Intel HD Graphics 4000 -
Color LCD 1440 x 900
NVIDIA GeForce GT 650M - VRAM: 512 MB
System Software: ℹ️
OS X 10.9.5 (13F34) - Uptime: 3:30:18
Disk Information: ℹ️
TOSHIBA MK5065GSXF disk0 : (500,11 GB)
S.M.A.R.T. Status: Verified
EFI (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / [Startup]: 499.25 GB (196.06 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
MATSHITADVD-R   UJ-8A8
USB Information: ℹ️
Apple Inc. FaceTime HD Camera (Built-in)
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Computer, Inc. IR Receiver
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Thunderbolt Information: ℹ️
Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
Mac App Store and identified developers
Kernel Extensions: ℹ️
/System/Library/Extensions
[loaded] com.avira.kext.FileAccessControl (1.0.0d1 - SDK 10.9) Support
Launch Agents: ℹ️
[not loaded] com.adobe.AAM.Updater-1.0.plist Support
[loaded] com.avira.antivirus.general.agent.plist Support
[loaded] com.avira.antivirus.ipm.ui.plist Support
[loaded] com.avira.antivirus.notifications.agent.plist Support
[loaded] com.avira.antivirus.odscan.default.plist Support
[loaded] com.avira.antivirus.scheduler.agent.plist Support
[running] com.avira.antivirus.systray.plist Support
[loaded] com.avira.antivirus.telemetry.agent.plist Support
[loaded] com.avira.antivirus.update.default.plist Support
[running] com.vsearch.agent.plist Support
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist Support
[invalid?] com.adobe.SwitchBoard.plist Support
[failed] com.avira.antivirus.dbcleaner.plist Support
[loaded] com.avira.antivirus.ipm.loader.plist Support
[running] com.avira.helper.watchdox.plist Support
[running] com.perion.searchprotectd.plist Support
[loaded] com.skype.skypeinstaller.plist Support
[invalid?] com.vsearch.daemon.plist Support
[invalid?] com.vsearch.helper.plist Support
User Launch Agents: ℹ️
[loaded] com.adobe.AAM.Updater-1.0.plist Support
[failed] com.facebook.videochat.[redacted].plist Support
[invalid?] com.genieo.completer.download.plist Support
[invalid?] com.genieo.completer.update.plist Support
[loaded] com.google.keystone.agent.plist Support
[invalid?] palmall-1-2.ver Support
[invalid?] palmall-1-2_updater.plist Support
[invalid?] palmall-1-2_updater.sh Support
User Login Items: ℹ️
iTunesHelper Aplicação (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Skype UNKNOWN (missing value)
Internet Plug-ins: ℹ️
FlashPlayer-10.6: Version: 15.0.0.223 - SDK 10.6 Support
QuickTime Plugin: Version: 7.7.3
Flash Player: Version: 15.0.0.223 - SDK 10.6 Support
AdobePDFViewer: Version: 10.1.1 Support
Default Browser: Version: 537 - SDK 10.9
DirectorShockwave: Version: 12.0.7r148 - SDK 10.6 Support
JavaAppletPlugin: Version: 14.9.0 - SDK 10.7 Check version
User Internet Plug-ins: ℹ️
ConduitNPAPIPlugin: Version: 1.0 - SDK 10.6 Support
Picasa: Version: 1.0 - SDK 10.6 Support
TroviNPAPIPlugin: Version: 1.0 - SDK 10.9 Support
Safari Extensions: ℹ️
Omnibar
Conduit Search for Safari
PalMall 1.2
3rd Party Preference Panes: ℹ️
Flash Player Support
Tuxera NTFS Support
Time Machine: ℹ️
Time Machine not configured!
Top Processes by CPU: ℹ️
      13% Avira
      6% WindowServer
      3% savapi
      1% uxipm_ui
      1% avguard-ondemand-mgmt
Top Processes by Memory: ℹ️
322 MB savapi
305 MB avbackendproxy worker (avguard-license)
133 MB Google Chrome Helper
120 MB avbackendproxy worker (update)
116 MB Google Chrome
Virtual Memory Information: ℹ️
889 MB Free RAM
1.62 GB Active RAM
766 MB Inactive RAM
772 MB Wired RAM
1.84 GB Page-ins
11 MB Page-outs

1. This procedure is a diagnostic test. It changes nothing, for better or worse, and therefore will not, in itself, solve the problem. But with the aid of the test results, the solution may take a few minutes, instead of hours or days.
Don't be put off by the complexity of these instructions. The process is much less complicated than the description. You do harder tasks with the computer all the time.
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There are ways to back up a computer that isn't fully functional. Ask if you need guidance.
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Nevertheless, if you can't satisfy yourself that these instructions are safe, don't follow them. Ask for other options.
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☞ Copy a line of text in this window to the Clipboard.
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☞ Paste the results, which will have been copied automatically, back into a reply on this page.
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5. You may have started the computer in "safe" mode. Preferably, these steps should be taken in “normal” mode, under the conditions in which the problem is reproduced. If the system is now in safe mode and works well enough in normal mode to run the test, restart as usual. If you can only test in safe mode, do that.
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PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/libexec;clear;cd;p=(Software Hardware Memory Diagnostics Power FireWire Thunderbolt USB Fonts SerialATA 4 1000 25 5120 KiB/s 1024 85 \\b%% 20480 1 MB/s 25000 ports ' com.clark.\* \*dropbox \*genieo\* \*GoogleDr\* \*k.AutoCAD\* \*k.Maya\* vidinst\* ' DYLD_INSERT_LIBRARIES\ DYLD_LIBRARY_PATH -86 "` route -n get default|awk '/e:/{print $2}' `" 25 N\\/A down up 102400 25600 recvfrom sendto CFBundleIdentifier 25 25 25 1000 MB ' com.adobe.AAM.Updater-1.0 com.adobe.AAM.Updater-1.0 com.adobe.AdobeCreativeCloud com.adobe.CS4ServiceManager com.adobe.CS5ServiceManager com.adobe.fpsaud com.adobe.SwitchBoard com.adobe.SwitchBoard com.apple.aelwriter com.apple.AirPortBaseStationAgent com.apple.FolderActions.enabled com.apple.installer.osmessagetracing com.apple.mrt.uiagent com.apple.ReportCrash.Self com.apple.rpmuxd com.apple.SafariNotificationAgent com.apple.usbmuxd com.citrixonline.GoToMeeting.G2MUpdate com.google.keystone.agent com.google.keystone.daemon 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$2} ' ' /^ *$/d;s/^ */   /;' ' s/^.+ |\(.+$$//g;p ' '/\.(appex|pluginkit)\/Contents\/Info\.plist$/p' ' /2/{print "WARN"};/4/{print "CRITICAL"};' ' /EVHF|MACR/d;s/^.+: //p;' );c1=(system_profiler pmset\ -g nvram fdesetup find syslog df vm_stat sar ps crontab iotop top pkgutil 'PlistBuddy 2>&1 -c "Print' whoami cksum kextstat launchctl smcDiagnose sysctl\ -n defaults\ read stat lsbom mdfind ' for i in ${p[24]};do ${c1[18]} ${c2[27]} $i;done;' pluginkit scutil dtrace profiles sed\ -En awk /S*/*/P*/*/*/C*/*/airport networksetup mdutil lsof test osascript\ -e );c2=(com.apple.loginwindow\ LoginHook '" /L*/P*/loginw*' "'tell app \"System Events\" to get properties of login items'|tr , \\\n" 'L*/Ca*/com.ap*.Saf*/E*/* -d 1 -name In*t -exec '"${c1[14]}"' :CFBundleDisplayName" {} \;|sort|uniq' '~ $TMPDIR.. $ -flags +sappnd,schg,uappnd,uchg -o ! -user $UID -o ! -perm -600 $' '.??* -path .Trash -prune -o -type d -name *.app -print -prune' :${p[35]}\" :Label\" '{/,}L*/{Con,Pref}* -type f ! -size 0 -name *.plist -exec plutil -s {} \;' "-f'%N: %l' Desktop L*/Keyc*" therm sysload boot-args status " -F '\$Time \$(RefProc): \$Message' -k Sender Req 'fsev|kern|launchd' -k RefProc Rne 'Aq|WebK' -k Message Rne 'Goog|ksadm|probe|Roame|SMC:|smcD|sserti|suhel| VALI|ver-r|xpma' -k Message Req 'abn|bad |Beac|caug|corru|dead[^bl]|FAIL|fail|GPU |hfs: Ru|inval|jnl:|last value [1-9]|NVDA$|pagin|proc: t|Roamed|rror|SL|Throttli|tim(ed? ?|ing )o|WARN' " '-du -n DEV -n EDEV 1 10' 'acrx -o comm,ruid,%cpu' '-t1 10 1' '-f -pfc /var/db/r*/com.apple.*.{BS,Bas,Es,J,OSXU,Rem,up}*.bom' '{/,}L*/Lo*/Diag* -type f -regex .\*[cght] ! -name .?\* ! -name \*ag \( -exec grep -lq "^Thread c" {} \; -exec printf \* \; -o -true $ -execdir stat -f:%Sc:%N -t%F {} \;|sort -t: -k2 |tail -n'${p[38]} '/S*/*/Ca*/*xpc* >&- ||echo No' '-L /{S*/,}L*/StartupItems -type f -exec file {} +' '-L /S*/L*/{C*/Sec*A,Ex}* {/,}L*/{A*d,Ca*/*/Ex,Co{mpon,reM},Ex,In{p,ter},iTu*/*P,Keyb,Mail/B,Pr*P,Qu*T,Scripti,Sec,Servi,Spo,Widg}* -path \\*s/Resources -prune -o -type f -name Info.plist' '/usr/lib -type f -name *.dylib' `awk "${s[31]}"<<<${p[23]}` "/e*/{auto,{cron,fs}tab,hosts,{[lp],sy}*.conf,mach_i*/*,pam.d/*,ssh{,d}_config,*.local} {,/usr/local}/etc/periodic/*/* /L*/P*{,/*}/com.a*.{Bo,sec*.ap}*t {/S*/,/,}L*/Lau*/*t .launchd.conf" list getenv /Library/Preferences/com.apple.alf\ globalstate --proxy '-n get default' -I --dns -getdnsservers\ "${p[N5]}" -getinfo\ "${p[N5]}" -P -m\ / '' -n1 '-R -l1 -n1 -o prt -stats command,uid,prt' '--regexp --only-files --files com.apple.pkg.*|sort|uniq' -kl -l -s\ / '-R -l1 -n1 -o mem -stats command,uid,mem' '+c0 -i4TCP:0-1023' com.apple.dashboard\ layer-gadgets '-d /L*/Mana*/$USER&&echo On' '-app Safari WebKitDNSPrefetchingEnabled' "+c0 -l|awk '{print(\$1,\$3)}'|sort|uniq -c|sort -n|tail -1|awk '{print(\$2,\$3,\$1)}'" -m 'L*/{Con*/*/Data/L*/,}Pref* -type f -size 0c -name *.plist.???????|wc -l' kern.memorystatus_vm_pressure_level '3>&1 >&- 2>&3' " -F '\$Time \$Message' -k Sender kernel -k Message CSeq 'n Cause: -' " );N1=${#c2[@]};for j in {0..9};do c2[N1+j]=SP${p[j]}DataType;done;N2=${#c2[@]};for j in 0 1;do c2[N2+j]="-n ' syscall::'${p[33+j]}':return { @out[execname,uid]=sum(arg0) } tick-10sec { trunc(@out,1);exit(0);} '";done;l=(Restricted\ files Hidden\ apps 'Elapsed time (s)' POST Battery Safari\ extensions Bad\ plists 'High file counts' User Heat System\ load boot\ args FileVault Diagnostic\ reports Log 'Free space (MiB)' 'Swap (MiB)' Activity 'CPU per process' Login\ hook 'I/O per process' Mach\ ports kexts Daemons Agents XPC\ cache Startup\ items Admin\ access Root\ access Bundles dylibs Apps Font\ issues Inserted\ dylibs Firewall Proxies DNS TCP/IP Wi-Fi Profiles Root\ crontab User\ crontab 'Global login items' 'User login items' Spotlight Memory Listeners Widgets Parental\ Controls Prefetching SATA Descriptors App\ extensions Lockfiles Memory\ pressure SMC Shutdowns );N3=${#l[@]};for i in 0 1 2;do l[N3+i]=${p[5+i]};done;N4=${#l[@]};for j in 0 1;do l[N4+j]="Current ${p[29+j]}stream data";done;A0() { id -G|grep -qw 80;v[1]=$?;((v[1]==0))&&sudo true;v[2]=$?;v[3]=`date +%s`;clear >&-;date '+Start time: %T %D%n';};for i in 0 1;do eval ' A'$((1+i))'() { v=` eval "${c1[$1]} ${c2[$2]}"|'${c1[30+i]}' "${s[$3]}" `;[[ "$v" ]];};A'$((3+i))'() { v=` while read i;do [[ "$i" ]]&&eval "${c1[$1]} ${c2[$2]}" \"$i\"|'${c1[30+i]}' "${s[$3]}";done<<<"${v[$4]}" `;[[ "$v" ]];};A'$((5+i))'() { v=` while read i;do '${c1[30+i]}' "${s[$1]}" "$i";done<<<"${v[$2]}" `;[[ "$v" ]];};A'$((7+i))'() { v=` eval sudo "${c1[$1]} ${c2[$2]}"|'${c1[30+i]}' "${s[$3]}" `;[[ "$v" ]];};';done;A9(){ v=$((`date +%s`-v[3]));};B2(){ v[$1]="$v";};for i in 0 1;do eval ' B'$i'() { v=;((v['$((i+1))']==0))||{ v=No;false;};};B'$((3+i))'() { v[$2]=`'${c1[30+i]}' "${s[$3]}"<<<"${v[$1]}"`;} ';done;B5(){ v[$1]="${v[$1]}"$'\n'"${v[$2]}";};B6() { v=` paste -d: <(printf "${v[$1]}") <(printf "${v[$2]}")|awk -F: ' {printf("'"${f[$3]}"'",$1,$2)} ' `;};B7(){ v=`grep -Fv "${v[$1]}"<<<"$v"`;};C0() { [[ "$v" ]]&&sed -E "$s"<<<"$v";};C1() { [[ "$v" ]]&&printf "${f[$1]}" "${l[$2]}" "$v"|sed -E "$s";};C2() { v=`echo $v`;[[ "$v" != 0 ]]&&C1 0 $1;};C3() { v=`sed -E "${s[63]}"<<<"$v"`&&C1 1 $1;};for i in 1 2 7 8;do for j in 0 2 3;do eval D$i$j'(){ A'$i' $1 $2 $3; C'$j' $4;};';done;done;{ A0;D20 0 $((N1+1)) 2;D10 0 $N1 1;B0;C2 27;B0&&! B1&&C2 28;D12 15 37 25 8;A1 0 $((N1+2)) 3;C0;D13 0 $((N1+3)) 4 3;D23 0 $((N1+4)) 5 4;D13 0 $((N1+9)) 59 50;for i in 0 1 2;do D13 0 $((N1+5+i)) 6 $((N3+i));done;D13 1 10 7 9;D13 1 11 8 10;B1&&D73 19 53 67 55;D22 2 12 9 11;D12 3 13 10 12;D23 4 19 44 13;D23 5 54 12 56;D23 5 14 12 14;D22 6 36 13 15;D22 20 52 66 54;D22 7 37 14 16;D23 8 15 38 17;D22 9 16 16 18;B1&&{ D82 35 49 61 51;D82 11 17 17 20;for i in 0 1;do D82 28 $((N2+i)) 45 $((N4+i));done;};D22 12 44 54 45;D22 12 39 15 21;A1 13 40 18;B2 4;B3 4 0 19;A3 14 6 32 0;B4 0 5 11;A1 17 41 20;B7 5;C3 22;B4 4 6 21;A3 14 7 32 6;B4 0 7 11;B3 4 0 22;A3 14 6 32 0;B4 0 8 11;B5 7 8;B1&&{ A8 18 26 23;B7 7;C3 23;};A2 18 26 23;B7 7;C3 24;D13 4 21 24 26;B4 4 12 26;B3 4 13 27;A1 4 22 29;B7 12;B2 14;A4 14 6 52 14;B2 15;B6 14 15 4;B3 0 0 30;C3 29;A1 4 23 27;B7 13;C3 30;B3 4 0 65;A3 14 6 32 0;B4 0 16 11;A1 26 50 64;B7 16;C3 52;D13 24 24 32 31;D13 25 37 32 33;A2 23 18 28;B2 16;A2 16 25 33;B7 16;B3 0 0 34;B2 21;A6 47 21&&C0;B1&&{ D73 21 0 32 19;D73 10 42 32 40;D82 29 35 46 39;};D23 14 1 62 42;D12 34 43 53 44;D12 22 20 32 25;D22 0 $((N1+8)) 51 32;D13 4 8 41 6;D12 21 28 35 34;D13 27 29 36 35;A2 27 32 39&&{ B2 19;A2 33 33 40;B2 20;B6 19 20 3;};C2 36;D23 33 34 42 37;B1&&D83 35 45 55 46;D23 32 31 43 38;D12 36 47 32 48;D13 10 42 32 41;D13 37 2 48 43;D13 4 5 32 1;D13 4 3 60 5;D12 21 48 49 49;B3 4 22 57;A1 21 46 56;B7 22;B3 0 0 58;C3 47;D22 4 4 50 0;D12 4 51 32 53;D23 22 9 37 7;A9;C2 2;} 2>/dev/null|pbcopy;exit 2>&-
Copy the selected text to the Clipboard by pressing the key combination command-C.
8. Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Click anywhere in the Terminal window and paste by pressing command-V. The text you pasted should vanish immediately. If it doesn't, press the return key.
9. If you see an error message in the Terminal window such as "Syntax error" or "Event not found," enter
exec bash
and press return. Then paste the script again.
10. If you're logged in as an administrator, you'll be prompted for your login password. Nothing will be displayed when you type it. You will not see the usual dots in place of typed characters. Make sure caps lock is off. Type carefully and then press return. You may get a one-time warning to be careful. If you make three failed attempts to enter the password, the test will run anyway, but it will produce less information. In most cases, the difference is not important. If you don't know the password, or if you prefer not to enter it, press the key combination control-C or just press return three times at the password prompt. Again, the script will still run.
If you're not logged in as an administrator, you won't be prompted for a password. The test will still run. It just won't do anything that requires administrator privileges.
11. The test may take a few minutes to run, depending on how many files you have and the speed of the computer. A computer that's abnormally slow may take longer to run the test. While it's running, there will be nothing in the Terminal window and no indication of progress. Wait for the line
[Process completed]
to appear. If you don't see it within half an hour or so, the test probably won't complete in a reasonable time. In that case, close the Terminal window and report what happened. No harm will be done.
12. When the test is complete, quit Terminal. The results will have been copied to the Clipboard automatically. They are not shown in the Terminal window. Please don't copy anything from there. All you have to do is start a reply to this comment and then paste by pressing command-V again.
At the top of the results, there will be a line that begins with the words "Start time." If you don't see that, but instead see a mass of gibberish, you didn't wait for the "Process completed" message to appear in the Terminal window. Please wait for it and try again.
If any private information, such as your name or email address, appears in the results, anonymize it before posting. Usually that won't be necessary.
13. When you post the results, you might see an error message on the web page: "You have included content in your post that is not permitted," or "You are not authorized to post." That's a bug in the forum software. Please post the test results on Pastebin, then post a link here to the page you created.
14. This is a public forum, and others may give you advice based on the results of the test. They speak only for themselves, and I don't necessarily agree with them.
Copyright © 2014 by Linc Davis. As the sole author of this work, I reserve all rights to it except as provided in the Use Agreement for the Apple Support Communities website ("ASC"). Readers of ASC may copy it for their own personal use. Neither the whole nor any part may be redistributed.

IS a thread scheduler part of JVM or OS ?

Hi Folks,
Just curious if the thread scheduler is a part of the JVM or OS, or either or both ?
I tried few thread pages in JLS,but couldnot locate the exact sentence describing this.
However some other resources have given me contradicting information.
For example, [Reference1|http://www.deitel.com/articles/java_tutorials/20051126/JavaMultithreading_Tutorial_Part3.html] states that it is a part of the OS,whereas [Reference2|http://book.javanb.com/java-threads-3rd/jthreads3-CHP-9-SECT-1.html] states that it is a part of both.(I am not sure about the authority of these links.)
So assuming, thread scheduling is done by JVM it is a part of the JVM only or it uses the underlying OS for support.
Thank you for the consideration.

This statement:
The JVM ... operates like a mini OS and schedules its own threads regardless the underlying operating system.flatly contradicts this statement:
In some JVMs, the java threads are actually mapped to native OS threads.They cannot both be true.
Therefore we can say that Threads are part of JVM and OS bothRubbish. There's no 'therefore' about it. You can't draw valid logical inferences from contradictions.
Guesswork and invalid inferences aside, the fact of the matter is that the semantics of Java threads are specified in the JLS but the execution mechanism is not. 'Any execution strategy that generates only allowed behaviors is an acceptable execution strategy.'
I am not sure about the authority of these linksNil. They are extracts from books by third parties. Use at own risk. The JLS is where the authority is.
Reference 2 is particularly poor, as it contradicts itself numerous times.
For the record, Reference 2 also makes the following claims which as far as I can see are entirely baseless, for the reasons given:
A Java virtual machine is required to implement a preemptive, priority-based schedulerThe word 'pre-emptive' does not appear in the JLS.
The Java virtual machine never changes the priority of a thread, even if the thread has been running for a certain period of timeCan't find that anywhere either.
the contract between the Java virtual machine and the underlying operating system is that the operating system must generally choose to run the Java thread with the highest priorityThe 'contract' is between the Java code and the JVM, not the JVM and the O/S.
That's what we mean when we say that Java implements a priority-based schedulerJava isn't required to 'implement' a scheduler at all.
This scheduler is implemented in a preemptive fashion, meaning that when a higher-priority thread comes along, that thread interrupts (preempts) whatever lower-priority thread is running at the time.This appears nowhere in the JLS.
The contract with the operating system, however, is not absolute, which means that the operating system can sometimes choose to run a lower-priority thread.In other words it's not pre-emptive. Make up your mind.
Java's requirement for a priority-based, preemptive scheduling mechanism ...Which is nowhere to be found.
A Java thread can have one of 11 prioritiesMIN_PRIORITY is 1, MAX_PRIORITY is 10: that makes 10, not 11.
In fact, preemption means only that a higher-priority thread runs instead of a lower-priority oneNo it doesn't. It means that when a higher-priority thread becomes ready it pre-empts the execution of any lower-priority threads that are currently executing regardless of time-slice etc. This is a feature of real-time systems that Java is not required to implement.
Summing up, the words 'pre-emptive' does not appear in the JLS, and the word 'scheduler' only appears in reference to sleep() and yield(), without any implication that the JVM has to implement one itself.

Thread scheduling problem in WLS5.1

We use a Timer Servlet to schedule some back end tasks, however we found
          that from time to time the thread scheduling often get delayed or ahead in a
          outragous magtitude.
          We run the servlet inside WLS, and right after start up, the timer works
          perfect, but after long enough time (more than one day), the timer started
          to behave weird. It could get delayed for as much as hours, and then
          suddenly fired up all delayed tasks in a very short period of time. We then
          try to run a very simple Timer doing only wake up every 10 minutes and print
          one line, that failed too. We are running WLS5.1+sp3 on
          Solaris2.6(Generic_105181-19 sun4u sparc SUNW,Ultra-5_10) with jdk1.2.1_04.
          BTW, we found that it ran well on NT, at least for three days without
          problem.
          Any feedback will be appreciated!
          Qingxiang Ke
          below is the source for the simple timer, and deploy properties for it
          inside weblogic.properties file.
          SimpleTimerServlet.java
          package com.cysive.test;
          import java.io.*;
          import java.util.*;
          import javax.servlet.*;
          import javax.servlet.http.*;
          public class SimpleTimerServlet extends HttpServlet
          class Sleepy implements Runnable
          public void run()
          while(true)
          try
          long wakeUpTime = 600 * 1000;
          Thread.currentThread().sleep(wakeUpTime);
          System.out.println(new Date().toString() + " SimpleTimer Yawn
          ............ Yawn ............");
          catch(InterruptedException ie){}
          private static boolean timerIsRunning = false;
          public void init()
          if(! timerIsRunning)
          Thread sleepy = new Thread(new Sleepy());
          sleepy.start();
          timerIsRunning = true;
          public void doGet(HttpServletRequest request,
          HttpServletResponse response)
          throws IOException, ServletException
          doPost(request, response);
          public void doPost(HttpServletRequest request,
          HttpServletResponse response)
          throws IOException, ServletException
          OutputStream os = response.getOutputStream();
          os.write("look at your std out!!!".getBytes());
          os.flush();
          os.close();
          deploy properties in weblogic.properties
          weblogic.httpd.register.simpletimer=com.cysive.test.SimpleTimerServlet
          weblogic.system.startupClass.servletSimpleTimer=weblogic.servlet.utils.Servl
          etStartup
          weblogic.system.startupArgs.servletSimpleTimer=servlet=simpletimer


We use a Timer Servlet to schedule some back end tasks, however we found
          that from time to time the thread scheduling often get delayed or ahead in a
          outragous magtitude.
          We run the servlet inside WLS, and right after start up, the timer works
          perfect, but after long enough time (more than one day), the timer started
          to behave weird. It could get delayed for as much as hours, and then
          suddenly fired up all delayed tasks in a very short period of time. We then
          try to run a very simple Timer doing only wake up every 10 minutes and print
          one line, that failed too. We are running WLS5.1+sp3 on
          Solaris2.6(Generic_105181-19 sun4u sparc SUNW,Ultra-5_10) with jdk1.2.1_04.
          BTW, we found that it ran well on NT, at least for three days without
          problem.
          Any feedback will be appreciated!
          Qingxiang Ke
          below is the source for the simple timer, and deploy properties for it
          inside weblogic.properties file.
          SimpleTimerServlet.java
          package com.cysive.test;
          import java.io.*;
          import java.util.*;
          import javax.servlet.*;
          import javax.servlet.http.*;
          public class SimpleTimerServlet extends HttpServlet
          class Sleepy implements Runnable
          public void run()
          while(true)
          try
          long wakeUpTime = 600 * 1000;
          Thread.currentThread().sleep(wakeUpTime);
          System.out.println(new Date().toString() + " SimpleTimer Yawn
          ............ Yawn ............");
          catch(InterruptedException ie){}
          private static boolean timerIsRunning = false;
          public void init()
          if(! timerIsRunning)
          Thread sleepy = new Thread(new Sleepy());
          sleepy.start();
          timerIsRunning = true;
          public void doGet(HttpServletRequest request,
          HttpServletResponse response)
          throws IOException, ServletException
          doPost(request, response);
          public void doPost(HttpServletRequest request,
          HttpServletResponse response)
          throws IOException, ServletException
          OutputStream os = response.getOutputStream();
          os.write("look at your std out!!!".getBytes());
          os.flush();
          os.close();
          deploy properties in weblogic.properties
          weblogic.httpd.register.simpletimer=com.cysive.test.SimpleTimerServlet
          weblogic.system.startupClass.servletSimpleTimer=weblogic.servlet.utils.Servl
          etStartup
          weblogic.system.startupArgs.servletSimpleTimer=servlet=simpletimer

Rich Black – Some kind of guideline / template?

Hi All...
There is an ongoing thread about what "Rich Black" AI uses:
http://forums.adobe.com/thread/429978?tstart=0
From the posts, i gather that, forget AI, there are a lot of options based on print quality paper stock, surfacing and finishing(?).
D'you folks think it possible to put up a kind of broad charectorisation of black-ink composition depending on relevant parameters?
Look, it doesn't have to be absolutely precise but a working rule of thumb. Maybe it could be posted as a sticky faq.
JJ

Scott...
That's getting somewhere... I was thinking of a basic kind of reference chart for newbies (and others)... kind of like:
Paper
Screen
GSM
CMYK
Newsprint
xx
40 0 0 100
Newsprint
yy
40 20 20 100
Coated Stock
225
40 40 40 100
PDF for web / email
Monitor
50 40 40 100
Some kind of a generic thing that would help get people started and have the caveat to check with their printer before final output. Could be a sticky.
Think it'd be of any help or just a waste of time?

IPod leaking some kind of fluid - NEW

Hi,
I have a 60G iPod video which in the past few months started to leak some kind of fluid from to wheel button. The push button in the center of the wheel also sunk down but is still functioning.
Since the button had sunk down I assumed that it is some kind of oil used in the button but the leak doesn't stop. This made me think that it might be the battery leaking but again the device is still working.
I could only find here a related post in the name "iPod leaking some kind of fluid" (http://discussions.apple.com/thread.jspa?messageID=5223930) but with no answers.
Can anyone help? Is there a way to make sure that it is not the battery who's leaking before the entire device goes dead?
Thanks.

Batteries= storage system for electricity. Although it may not be acid (as the batteries are not lead-acid batteries but rather lithium-ion), it could still be fluid from the battery.
Whatever it is, it's not a good sign. Google for iPod repair. iresq.com comes up a lot in discussions.
Best of luck.

IMessage isn't working on iPad .. It ask me to sign in with my Apple ID then it tell me some kind of error happened, IMessage isn't working on iPad .. It ask me to sign in with my Apple ID then it tell me some kind of error happened

IMessage isn't working on iPad .. It ask me to sign in with my Apple ID then it tell me some kind of error happene ..please help !!!!!

hi,
This thread is marked as Correct (Finished).
It is not even about iOS 6
You would be better off starting a new thread and stating how far along setting up an Apple ID you are.
11:42 PM Friday; September 21, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 Couple of iPhones and and iPad
"Limit the Logs to the Bits above Binary Images."  No, Seriously

Some kind of glue coming from the LCD-monitor

My husband gave me a BB pearl for Christmas last year (08)….but suddenly, a couple of weeks ago (maybe months), I started to get some kind of glue from the “monitor”…
I called T-Mobile right away, and they said that as we did not pay for the insurance, they cannot do anything for this issue…They also said we couldn’t claim the guarantee because they have never heard anything about glue coming out from the monitor…
Does anybody face something like this?

I haven't heard of that, yea it is possbile I suppose.
If I were you, I would take it back to the specific Tmobile retail store where it was purchased and demand the replacement in warranty since it it still less that a year old.
1. If any post helps you please click the below the post(s) that helped you.
2. Please resolve your thread by marking the post "Solution?" which solved it for you!
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What about some kind of "student" board?

Hi all
I'd like to know what you think about that:
Every few months (there were already threads where members complained about that) we see questions posted from different people but very similar - obviously students that were given the same task. What makes me annoyed is the fact, that some of them just want a solution. Although I want to help others, for me this goes to far. If you can see, that the asking person is struggling with something but is eager to get used to LV, then I try to help. But in the other case, let's say "Help - I need a solution", I don't want to spend time.
Now - would it be a way to create some kind of student board, where such people can post? So the ones from the community that don't have a problem with the "Help - I need a solution"-bevaviour can jump in and the others can keep out.
What's is your opinion wire-workers?
Thomas
Using LV8.0
Don't be afraid to rate a good answer...

If such a board would exist, the serious students would probably post in it and then you wouldn't see their questions and wouldn't be able to help them. The not-so-serious students, on the other hand, might fail to notice this board and post to the regular board, thus not helping you. I think the best thing might be to continue ignoring the annoying ones. It's their problem, not ours.
Then again, maybe the annoying students will go to the student board and the other ones won't. Who knows???
Try to take over the world!

Some kind of technical problems (like slow data processing)...

Some kind of technical problems (like slow data processing) with Leopard appears during the working in the local network.
OS Snow Leopard 10.6 is installed; including all updates, the computer I currently use is Mac Pro. So I have some kind of technical problems (like slow data processing) with Leopard during the working in the local network. (Windows network).
During the attempt to connect with network sharing (the computer is in the network) automounter process took approximately one minute.
Later on, after the automounter process is finished it’s working quite normally over remote computer, but when you try to automount again, everything starts from the very beginning.
The internet is working very well, it’s connected with domain, and everything is adjusted.
I use to ask our system administrator; maybe it is necessary to activate the some kind of protocol?
The OS Tiger is installed on the second hard disk, and it’s working well.
Maybe someone could help me, I try to find the similar problems, but I could not find them.
Thanks//

A couple of things.
First, thanks for the tips. I was starting to suspect the network might be an issue (bad nic, bad router, something).
But netstat -s was showing an average of about .15% packet loss. For a web server that seems to be a pretty good value so I'm not sure.
I did, however, ask someone else to look at the server because I'd spent the whole week on just server performance and was going out of my mind. This second pair of eyes really helped as he found that the pagefile for the server was set at 2mb!? Still trying to figure out how that happened. But we increased the pagefile to a much better value. There wasn't an immediate change in performance, but over time the server appears to have begun to respond better.
Occasionally I still get these 'lag spikes' but nowhere near what they were and the delay is much smaller as well, which is probably being caused by something else entirely (like bad programming on my part, hah).

A new icon appeared on my dock that replaced the "fox around the globe" icon? Is this some kind of spyware or virus?

I have a Macbook Pro and today I noticed the familiar "fox around the globe" icon was gone from my dock and in it's place was something that looks like a protracting compass, like the letter "A" on a sheet of paper . When I clicked on it, "Firefox" opened? Is that some kind of spyware or virus?

Try the solution from this thread:
* [[/questions/883573]]
* Delete the Firefox icon from the dock.
* Create a new icon by dragging the Firefox application to the dock.

EP error with some kind of iviews

Hi!
I'm having this problem. With the display of some kind os iviews I'm getting this error:
java.io.IOException: Cannot read connection identification byte.
at com.sap.engine.core.cluster.impl6.JoinPortListener$SocketProcessor.run (JoinPortListener.java:156)
at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
Any ideas?
Thanks,
Wadih

#1.5 #001A64A861680011000002CA000E7088000455F16D982A2F#1220395321010#com.sap.engine.core.manipulator.TCPRunnableConnection##com.sap.engine.core.manipulator.TCPRunnableConnection.init()#######SAPEngine_System_Thread[impl:6]_28##0#0#Warning#1#/System/Network#Java###Cannot get input and output streams from socket. ConnectionsManipulator is not initialized.
[EXCEPTION]
#1#java.io.EOFException: Connection closed by remote host.
     at iaik.security.ssl.Utils.a(Unknown Source)
     at iaik.security.ssl.o.c(Unknown Source)
     at iaik.security.ssl.r.f(Unknown Source)
     at iaik.security.ssl.f.c(Unknown Source)
     at iaik.security.ssl.f.a(Unknown Source)
     at iaik.security.ssl.r.d(Unknown Source)
     at iaik.security.ssl.SSLTransport.startHandshake(Unknown Source)
     at iaik.security.ssl.SSLSocket.startHandshake(Unknown Source)
     at com.sap.engine.services.ssl.factory.SSLSocket.startHandshake(SSLSocket.java:162)
     at com.sap.engine.services.ssl.factory.SSLSocket.getInputStream(SSLSocket.java:280)
     at com.sap.engine.core.manipulator.TCPRunnableConnection.init(TCPRunnableConnection.java:351)
     at com.sap.engine.core.manipulator.TCPRunnableConnection.run(TCPRunnableConnection.java:554)
     at com.sap.engine.frame.core.thread.Task.run(Task.java:64)
     at com.sap.engine.core.thread.impl6.SingleThread.execute(SingleThread.java:80)
     at com.sap.engine.core.thread.impl6.SingleThread.run(SingleThread.java:150)
Thanks,
Wadih

Just wondering if some kind person would convert the attached 8.6 VI to 8.5, thanks.

Just wondering if some kind person would convert the attached 8.6 VI to 8.5, thanks.
Solved!
Go to Solution.
Attachments:
LabTest.vi ‏101 KB

Please post your request to the downconvert thread.

Recently when opening up Photoshop, my Adobe CS6 Master Collection pops up saying there's some kind of offer going on the Creative Cloud. For awhile I was just able to close out of it and go about my business on Photoshop, but now it's not allowing me to

Recently when opening up Photoshop, my Adobe CS6 Master Collection pops up saying there's some kind of offer going on the Creative Cloud. For awhile I was just able to close out of it and go about my business on Photoshop, but now it's not allowing me to open Photoshop unless I sign up/pay. I'm quite confused? I really NEED to have access to Photoshop ASAP.

Sign in, activation, or connection errors | CS5.5 and later
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Some kind of thread scheduling lag in 6.1sp2

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