Re: Rework of the kernel message buffer cache

2015-01-02 Thread Justus Winter
Quoting Samuel Thibault (2015-01-02 01:26:10) > Justus Winter, le Thu 18 Dec 2014 11:30:23 +0100, a écrit : > > Otoh I believe this is the right thing to do even if it doesn't > > improve the performance, as the current solution might be worse in a > > multi-cpu setting, as the `ipc_kmsg_cache' wou

Re: Rework of the kernel message buffer cache

2015-01-01 Thread Samuel Thibault
Justus Winter, le Thu 18 Dec 2014 11:30:23 +0100, a écrit : > Otoh I believe this is the right thing to do even if it doesn't > improve the performance, as the current solution might be worse in a > multi-cpu setting, as the `ipc_kmsg_cache' would bounce back and forth > between per-cpu caches. Al

Rework of the kernel message buffer cache

2014-12-18 Thread Justus Winter
Hello, I recently increased the maximum size of kernel message buffers that are cached in commit 73314404. This greatly improved the overall system performance. This is a rework of said cache mechanism. It reduces the number of cache misses even further, but its impact on performance is unclear