Ask PG: What's up with the 2GB limit?

https://news.ycombinator.com/item?id=513709

by zacharydanger • 17 years ago

4 9 17 years ago

news.ycombinator.com

32-bit systems can handle up to 4GB and any modern Linux system with a CPU that supports Physical Address Extension can use up to 64GB.

How are you coming up with your 2GB limitation?

icey• 17 years ago

I assume he means the machine YC is hosted on has 2gb of memory.

zacharydanger• 17 years ago

Yes, I forgot to mention the link to his original comment, but now I can't find the thread.

thepanister3• 17 years ago

http://news.ycombinator.com/item?id=512244

Did you mean that one?

pg2• 17 years ago

There's 4GB of physical memory on the server, but for various reasons we only end up with about 2GB of usable heap space.

Rtm just placed an order for a new server, so we should have more memory and a somewhat faster CPU soon.

thepanister3• 17 years ago

Well, Don't you think that if you make pagination for comments of a story, that could help?

For example, if a story has 50 comments, then it should be devided into 2 pages, each page shows 25 comments... and as a result it will use less memory?

pg2• 17 years ago

That would not use less memory. It's not the html pages that are stored in memory, but the individual comments.

mixmax• 17 years ago

This would presumably give some problems with votes. For instance, a comment in a long thread that starts on page 2 would have a very small chance of making it to page 1 since only a subset of users would look at the second page thus having a chance to vote it up.

Jem• 17 years ago

This was discussed in pg's original submission on why things had been slow lately. Do we need this separate submission?

Ask PG: What's up with the 2GB limit?

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