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Figure 25 – Windows 2000 buffered sequential overhead
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| bet | 35/47 | | Sana | 30.03.2021 | | Hajmi | 1.33 Mb. | | #13789 |
Figure 25 – Windows 2000 buffered sequential overhead. Both SCSI and IDE have similar buffered overheads. This is expected since both offload much of the IO processing on to a separate controller card. 2KB writes show a significantly higher overhead than reads. This is due to the additional 4KB read and merge that takes place before each 2KB write, effectively more than doubling the request overhead incurred. Due to request coalescing, requests smaller than 8KB actually have less overhead with FS buffering enabled. For requests larger than 8KB, unbuffered requests have a lower overhead.
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