My best guess at this point is that some of the package must be cached in RAM. Any timing tests I perform now have C or H marked next to them, so I know the situation in which the timing was performed.
If yes , un-publish and remove the package and reboot. Logon and wait 5 minutes before performing any testing.
If no , proceed with testing without a reboot. Hard drive still busy after mounting I also discovered that even when the App-V 5 package mounting is reported as complete, the hard drive would still be very busy for some time afterwards sometimes up to a minute, sometimes only for 10 seconds.
During this time, the computer would be very sluggish. If I get time I need to go back and test this theory. You only notice this when you zoom into the IO graph a fair bit:. So the summary so far is: Day one was bad. Day two was really really bad. Please leave me alone to work on the problem….
The customer takes my original report and posts parts of it in a forum. I just had a look and found the article:. The network file transfer of the MB file only took 3 seconds see previous table , but it takes 3 times longer at best to extract it via 7-ZIP and 25 times longer via Explorer.
Feature request! Whilst these results are consistent with previous findings, there are a few interesting items to note:. These all pale in comparison to the App-V 4. This is a result. When using a SSD, the problem seems to completely go away. The App-V 5 client takes 6 seconds when technically it could be done in 2. I have now half removed the noose from around my neck: I tell the customer about the SSD result and they buy some SSD drives for their test lab and confirm my result.
I captured an XPerf trace of an App-V 5 package mount on the rpm hard disk as follows:. From the screenshot above you can see that while the Mount-AppvClientPackage command is running, the CPU usage is very low but the hard disk is being hammered for about 58 seconds which is the entire time the App-V 5 package was being mounted. The middle graph shows that the operations are mainly IO writes as expected and disk flushes not expected.
The results are in the screenshot below:. For the Explorer unzip of the. App-V 5 client takes 60 seconds and flushes the disk throughout. Explorer takes 10 seconds. I report my findings to Microsoft and eventually am put in contact with some members of the App-V 5 development team who confirm my results. I can envisage using this code in multiple ways:. Only users with local administrative rights can modify the Windows write-cache buffer flushing setting via the GUI or via DeviceIOControl , but I need to control this for normal users.
A brief summary of how to programmatically control Windows write-cache buffer flushing is as follows. Oh I wish it had been that simple. It took a lot of coffee drinking and just short of lines of code to achieve this goal, although a lot of that code included API definitions and error handling.
If these common methods fail, you can download and use the Symantec CleanWipe removal tool using the instructions below. You should always use the latest version of the CleanWipe removal tool to uninstall Symantec Endpoint Protection. While CleanWipe can remove older installations of Symantec Endpoint Protection, you should not use an older version of CleanWipe to remove a newer version of Symantec Endpoint Protection.
This action can have unexpected results. As of version 14, you can also incorporate CleanWipe functionality directly into the Symantec Endpoint Protection client package. You can enable this option with client installation settings. For more information, see About uninstalling the Symantec Endpoint Protection client. If you need help with CleanWipe, contact Broadcom Support directly. Alternately, CleanWipe is included on the full installation file for Symantec Endpoint Protection, in the Tools folder.
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