This section describes the counters and what they measure. The following performance counters measure hard page faults which include, but are not limited to, page file reads :. Hard page faults are faults that must be resolved by retrieving the data from disk.
Such data can include portions of DLLs,. These faults might or might not be related to a page file or to a low-memory condition. Hard page faults are a standard function of the operating system. They occur when the following items are read:. High values for these counters excessive paging indicate disk access of generally 4 KB per page fault on x86 and x64 versions of Windows and Windows Server.
This disk access might or might not be related to page file activity but may contribute to poor disk performance that can cause system-wide delays if the related disks are overwhelmed.
Therefore, we recommend that you monitor the disk performance of the logical disks that host a page file in correlation with these counters. Be aware that a system that has a sustained hard page faults per second experiences KB per second disk transfers. No performance counter directly measures which logical disk the hard page faults are resolved for.
Not all the memory on the modified page list is written out to disk. If a system is configured to have more than one page files, the page file that responds first is the one that is used. This means that page files that are on faster disks are used more frequently. Be aware that actual page file usage depends greatly on the amount of modified memory that the system is managing. This means that files that already exist on disk such as. Only modified data that does not already exist on disk for example, unsaved text in Notepad is memory that could potentially be backed by a page file.
After the unsaved data is saved to disk as a file, it is backed by the disk and not by a page file. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info.
Contents Exit focus mode. Please rate your experience Yes No. Any additional feedback? Note During startup, system-managed page files are sized respective to the system crash dump settings.
Note Not all the memory on the modified page list is written out to disk. Mainframe computers from the s were already using it! It made a lot of sense when RAM was measured in dozens of kilobytes. These days most mainstream computers have way more RAM than the user is likely to need unless they routinely run memory-hungry applications. Given that your computer has the right amount of RAM, there may still come a day when something makes RAM paging necessary. One of the most common pieces of advice is to set your page file to a different drive than your operating system drive.
The thing is, most new computers have a solid state drive SSD as their primary disk these days. While SSDs using the SATA interface still have to queue read and write requests sequentially, they are orders of magnitude faster than mechanical drives with spinning platters. The logic behind this makes sense, since hard drives have to queue requests for reads and writes. So if Windows is trying to swap information from your page file and also trying to use the disk for other purposes it will all slow down to a crawl.
If you put your page file on a separate hard drive, then this problem goes away. On mechanical hard drives, fragmentation can also be an issue. Files are not stored continuously, but written into any available gaps left by deleted files. This means that over time as files are written and deleted, a specific file might exist in bits and pieces all over the drive.
If your page file is physically scattered all over the disk platter, it takes longer for the drive heads to put it all together. On solid state drives, this is a non-issue. If you are using a mechanical drive, creating a dedicated partition after first defragmenting the drive in question can be a good way around this.
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Wednesday, October 19, PM. You could work through these ones. Thursday, October 20, AM. Hi, Was your issue resolved? Best Regards, Andy Please remember to mark the replies as answers if they help and unmark them if they provide no help. Monday, October 24, AM. Hi, I've just started to read links on last friday.
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