Windows File transfers are slow or: what I have been troubleshooting for the last two months

Over the last couple of months, I have spent a lot of time trying to improve the performance of file transfers across the LAN. Try as I might, I could not isolate the bottleneck. This is on a small network, a large RAID array, plenty of RAM and CPU power, 100 megabit switches. File transfers to and from the file server were topping off at less than 5 megabytes per second, but client-to-client transfers faired better, near 10 MB/s. WHY?!

No need to clean old prefetch data with CCLeaner


The freeware system utility CCLeaner has dramatically improved system responsiveness and overall performance for a couple of desktop PCs that I administer. I saw the option to clean "Old Prefetch data" under the Advanced menu. According to this link, there is never a need to clean Windows' prefetch data, and in fact, doing so will temporarily reduce system performance.

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