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Re: [Qemu-block] [Qemu-devel] Request for clarification on qemu-img conv

From: Nir Soffer
Subject: Re: [Qemu-block] [Qemu-devel] Request for clarification on qemu-img convert behavior zeroing target host_device
Date: Thu, 13 Dec 2018 23:53:47 +0200
On Thu, Dec 13, 2018 at 11:14 PM De Backer, Fred (Nokia - BE/Antwerp) <address@hidden> wrote:
> Indeed, performance traces are important for issues like this.
See strace of both FC27 and FC29 attached

Looks like you traced only the main thread. All the I/O is done in other threads.
These flags would be useful:

    strace -o log -f -T -tt

Nir
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