 | | | System hang problem. | System hang problem. 2006-10-04 - By Jeffrey Siegal
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Ed Wilts wrote:
> On 10/4/2006 3:07 PM, Manish Neema wrote:
>>> I have what will probably sound like a stupid suggestion, try running
>>> with a much smaller swap file.
>>
>> You are right. Up to 6GB SWAP (on a 16GB RAM system), the machine never
>> hangs and always generates an OOM kill upon memory exhaustion. However,
>> we need large SWAP as most of our tools (EDA) are memory hungry.
>
> I think you have a misunderstanding as to what swap is for - it's not
> for memory-hungry applications. Swap is not a replacement for memory.
> It's good in cases where you have a lot of applications and many of them
> are idle and you can afford the swapin/swapout. Swap is a very bad
> substitute for memory-hungry applications. You need to buy more memory.
Well, to be fair you can't really know that without actually
understanding what his applications are doing. It could be they
allocate a lot of memory but most of that memory is usually inactive,
which would be a reasonable use for swap.
There's a good chance your advice is correct but I'm just saying not
necessarily.
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