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I upgraded my T60 with a Crucial V4 128GB. Have done all the tweaks (scheduler, discard, noatime, nodirtime) and I'm finding that installing anything is very slow. Right now I'm installing some updates and out of curiousity checked iostat and found that while downloading updates, the drive is active, kB_writn/s shows large numbers but right now, in "applying changes" phase iostat bounces between 0 and 200, but is mainly at 0.00. HDD light has been on for the whole time. What could be causing it?

Thanks in advance!

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I guess the size of update pacakges are small so you see very little write on iostat namhuy.net/1563/… –  Blanca Higgins Jun 7 at 17:35
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