On Wed, May 2, 2012 at 1:33 PM, Johan Grönqvist
<johan.gronqvist@gmail.com> wrote:
2012-05-02 13:12, Sian Mountbatten skrev:
Your swap partition is, very likely, too large. As a rule, your swap
partition should be the same size as your RAM. Do you have 40GB RAM?
Linux can handle well above 40 GB of swap. I would be surprised if "swap partition too large" was the reason. My swap is larger than that.
I am always a bot surprised by advice like the ones in this thread. I have heard and seen this many times.
I am aware that for web-browsing, and other similar activities, using swap is almost always bad, as it slows the system down.
I typically run programs and scripts without having a good estimate of their future memory usage, and my computer usage is frequently RAM-bound, so I try to guess how much I can do within the memory I have available.
It is not uncommon for me to misjudge the need by a factor of 2 or 3, and in those cases, I have programs being killed left and right unless I have enough swap-space.
I would say that being careful with swap-space is important when one has too small a hard drive, but I have plenty of drives space these days. Not having my jobs killed is more important to me than saving a few tens of GB of extra space.
I have just above 40 GB on my current desktop, and when I had influence over a computer with 64GB RAM, it had quite a bit of swap space.
Mem: 64558M total, 24822M used, 39735M free, 324M buffers
Swap: 184323M total, 25M used, 184298M free, 24238M cached
Regards
Johan
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The only time I have seen swap not used when it is active is when it wasn't needed. If you can see your swap active using the free command or swapon -s , and it's not getting used, but you keep crashing, what I usually see is bad memory. From my experience memtest would be my next step.
Shane