On Tue, 2 Dec 2014, Andy Lutomirski wrote: > FWIW, context tracking for full nohz is *slow*, so it may reduce noise, > but it dramatically increases syscall and fault overhead. This isn't > really an mm issue, though. In general though no syscalls are performed in critical latency sensitive segments and the I/O is done using kernel bypass. So controlling the OS causing hiccups becomes an important issue. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>