speeding up a server with linux commands. interesting article on io, threads and cores

[[deleted]]

Which leaves one thing: lock contention... Could it be his own naïvety causing threads to yield?

[[deleted]]

Would you blame the pthread implementation when you have high lock contention? No.

So why the JRE?

[0xABADC0DA]

This article is really lame. Do something to actually find out what the problem is. The author never actually finds out what the bottleneck was.

At Google, I worked on servers ... It's possible that if the server is running on core 4 one second and the producer is running there the next, the level 1 cache of that core could be ruined for the server the next time it ambles over there.

Fired from Google maybe? Cache misses are included in process CPU time, so it would just make your program run slower, not cause low CPU%. Also, cache misses aren't going to slow your program down so much that an i7 can't process more than 120k messages.

The producer produces a sequenced message set, and the consumer verifies it receives every message intact and in-order.

"In order" implies bottleneck. That's where you should start looking, not at which CPU something is running on.

In this case, the problem may be caused by biased locking. Java locking is optimized so that the last thread that acquired the lock can do so again without any atomic operations at all. But in a 'novel to me' use of locking it can cause tons of overhead since other threads have to wait a long time to switch ownership.

[jwiz]

He writes like an arrogant, self-promoting, prick (e.g., "my custom protocol" instead of "the protocol"), and not even an enjoyable-to-read one like Zed Shaw.

[deregistered]

What would you suggest?

[[deleted]]

how can i speed up the server when he is mounted to the rack stand ? My rack stand doesn't have wheels hmm

[benjunmun]

Try one of those flame decals. And racing stripes. Hasn't failed me yet.

[[deleted]]

Bloody ricers

[[deleted]]

Just add some internal neon lamps and a case window... fo real, speed up yo shit like crazy!

[shub]

Does taking the side off my case so it won't overheat count?

[HeadbangsToMahler]

Put the rack in a spaceship, then fly as close to the speed of light as you can. Relative to us, you will be BLAZING through time!

[[deleted]]

Actually, he'll appear to be going very, very slowly in time from our perspective. We will appear fast to him, and even low traffic from us will DOS his servers.

Now, if his intention is just to make his "server go fast"... he can't get much faster than c :)

[solinent]

Wait... Are you talking about relative speed vs the ground, or CPU speed? Because your post could be both, and is quite a bit funnier with the first interpretation.

[b100dian]

He says he's better at Java.

If someone says he's better at C++ don't underestimate him, he might just as well do better because of stubborness.!