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On Wed, May 25, 2011 at 9:20 AM, Alex Schuster <wonko@×××××××××.org> wrote: |
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> Hi there! |
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> |
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> I still wonder why my KDE4 system starts swapping so early. Until a week |
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> ago, I had 6G of RAM, but after a day of being logged in, I usually had some |
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> swap usage. Sometimes this goes up to 1.5G, this is when the system becomes |
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> way too slow and I log out. |
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I can't remember the last time my swap was used at all. I have 12G of |
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RAM, but in my prior system with 8G it was the same. Only in a rare |
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case when some program had run-away memory usage/memory leak did I |
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ever get to swap usage... I'm using vanilla kernel 2.6.39 with no |
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patches, no BFS. And I use proprietary nvidia-drivers. I normally |
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don't have so many programs running at once, but it happens sometimes. |
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Since 2.6.38 and enabling automatic process grouping, I don't use nice |
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or ionice at all anymore. I do parallel emerge with -j along with make |
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-j12 and never notice any slowdown or lag in UI at all. |
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With KDE4 logged in, and no GUI apps running (other than knutmon and |
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wicd), my RAM usage is slightly less than 900M (not counting |
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filesystem caches). |
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>BTW, does anyone else's kwin use 750M? That's pretty high, I think it used |
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>to be more like 300M. |
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My kwin (4.6.3-r1) has currently 507M VIRT, 54M RES, 37M SHR according to top. |
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My worst memory offenders, by resident memory: |
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clamd 124M |
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denyhosts 114M |
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X 75M |
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plasma-desktop 56M |
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By virtual memory: |
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krunner 964M |
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wicd-client (python) 681M |
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plasma-desktop 643M |
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kded4 581M |
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>Or I do a 'swapoff -a && swapon -a', this empties the swap and also |
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>frees memory. But this takes _quite_ _a_ _while_. Once I measured 37 minutes |
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>to clear 1G of swap. |
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My PC doesn't swap, but in my Nokia N900, it runs Linux and X, heavy |
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use of gtk and Qt4 libs, it has 256M of RAM and 768M of swap on eMMC |
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(transfer rate about 20MB/sec). It swaps like crazy. :) Usually there |
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is more swap in use than RAM, actually. |
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When I move the swap to a slow SD card instead (2MB/sec transfer |
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rate), even in that slow device, swapoff on the eMMC swap partition |
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with ~500M in-use takes about 2 or 3 minutes at most with the data |
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being swapped slowly into the SD card. |
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So I think in your case it should be much faster than that! |
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