Re: [perf-discuss] Mapping the kernel heap with large pages

2010-08-14 Thread Jim Mauro
Hi Kishore - If could help if you could provide some performance data, since you're talking about a performance problem. Specifically, since you're doing large file reads (which I'll assume are sequential reads), what read throughput are you getting? Thinking in terms of altering the memory pag

[perf-discuss] Mapping the kernel heap with large pages

2010-08-13 Thread Kishore Kumar Pusukuri
Hi, One of my applications is spending around 90% of total execution time reading a huge file using read system call. I though that I could improve the performance of the application by increasing the page size for kernel heap. I know that I can increase page size of application heap using ppgs