Vivek Goyal wrote: > Notes: > - With vanilla CFQ, random writers can overwhelm a random reader. > Bring down its throughput and bump up latencies significantly.
IIRC, with vanilla CFQ, sequential writing can overwhelm random readers, too. I'm basing this assumption on the observations I made on both OpenSuse 11.1 and Ubuntu 9.10 alpha6 which I described in my posting on LKML titled: "Poor desktop responsiveness with background I/O-operations" of 2009-09-20. (Message ID: [email protected]) Thus, I'm posting this to show that your work is greatly appreciated, given the rather disappointig status quo of Linux's fairness when it comes to disk IO time. I hope that your efforts lead to a change in performance of current userland applications, the sooner, the better. Thanks Ulrich _______________________________________________ Containers mailing list [email protected] https://lists.linux-foundation.org/mailman/listinfo/containers _______________________________________________ Devel mailing list [email protected] https://openvz.org/mailman/listinfo/devel
