memory management changed in 10.1.3?

hazmat

hazmat

Rusher of Din
Not sure if this is just coincidental, but I have noticed a dramatic change since moving to 10.1.3. I use Memory Monitor in the Dock, and used memory seems to stay much lower than before. Anyone else notice this, or is it just coincidental?
 
They've definitely done something different; I used to see quite a few pageouts in top when building Mozilla; the last two builds, I've seen probably a third fewer...
 
I have 640MB of RAM, and while I rarely encounter paging, I usually see the memory monitor climb over the course of an hour to being almost maxed.

Our Solaris guy at work says that is what Unix boxes do, so I never paied much attention to it.

However it is now staying stable at about 45% used... and it is not climbing.

So does this mean they fixed some sort of memory leak?
 
I don't think it was a leak, from my observations, it just seemed the file cache was a little too aggressive. I was easily able to free it up by temporarily creating a large (300-400MB) file, then removing it. This caused the cache to use memory for that file, then when the file's deleted, frees it up.

At times, it seemed to prefer to keep files cached and swap application memory space out. With 512M of RAM, I didn't think it'd pageout any where near as much as it did.
 
Originally posted by TommyWillB
I have 640MB of RAM, and while I rarely encounter paging, I usually see the memory monitor climb over the course of an hour to being almost maxed.

Our Solaris guy at work says that is what Unix boxes do, so I never paied much attention to it.

However it is now staying stable at about 45% used... and it is not climbing.

So does this mean they fixed some sort of memory leak?
Click to expand...

That's what your Solaris guy said? Ask him about swapfs and tmpfs. I'd say that if your memory on a Sun, at least, does that, then something is not configured correctly.
 
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