[Bug 212681] I/O is slow for FreeBSD DOMu on XenServer

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=212681

--- Comment #22 from Roger Pau Monné <royger at freebsd.org> ---
Hello,

I don't have much time to look into this right now, could you try to create a
flamegraph [0] of this workload, this way we might be able to identify the
bottleneck(s). If possible you should create the flamegraph with pmcstat
instead of dtrace, the result is going to be much more accurate (specially when
running inside of a VM).

[0] http://www.brendangregg.com/blog/2015-03-10/freebsd-flame-graphs.html

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