Search results
Results From The WOW.Com Content Network
The dirty bit for a page is set by the hardware whenever any word or byte in the page is written into, indicating that the page has been modified. When a page is selected for replacement, the modify bit is examined. If the bit is set, the page has been modified since it was read in from the disk. In this case, the page must be written to the disk.
Versions of Intel CAS are available for Windows Enterprise, Windows Workstation, and Linux. [2] [4] CAS for Windows is an application-aware file-based cache, which can be tuned by system administrators. Additionally, it integrates with the operating system's buffer cache, creating a multi-tier cache architecture.
One of the major improvements the PCI Local Bus had over other I/O architectures was its configuration mechanism. In addition to the normal memory-mapped and I/O port spaces, each device function on the bus has a configuration space, which is 256 bytes long, addressable by knowing the eight-bit PCI bus, five-bit device, and three-bit function numbers for the device (commonly referred to as the ...
If you would like to keep your data in your cache and test Wikipedia with an empty cache, you can use Private Browsing mode. To disable caching in Firefox (not recommended for most users): Choose Tools Options… (or Edit Preferences in the Linux version). Choose "Advanced" at the top. Choose the "Network" tab. Change the cache size to 0 (zero).
FUA write command will not return until data is written to media, thus data written by a completed FUA write command is on permanent media even if the device is powered off before issuing a FLUSH CACHE command. [8] [dead link ] [9] FUA appeared in the SCSI command set, and was later adopted by SATA with NCQ. FUA is more fine-grained as it ...
When a cache line is reused the RRPV is set to zero, indicating that the line has been reused once and is likely to be reused again. On a cache miss, the line with an RRPV equal to the maximum possible RRPV is evicted; with 3-bit values, a line with an RRPV of 2 3 - 1 = 7 is evicted. If no lines have this value, all RRPVs in the set are ...
DiskStation Manager (DSM) is a Linux-based operating system developed by Synology for its NAS products. Synology's software architecture allows for third-party add-on application integration. Hundreds of third-party applications are available in addition to Synology's own catalog. Command line access via SSH or Telnet is available.
The CPU has to access main memory for an instruction-cache miss, data-cache miss, or TLB miss. The third case (the simplest one) is where the desired information itself actually is in a cache, but the information for virtual-to-physical translation is not in a TLB. These are all slow, due to the need to access a slower level of the memory ...