linux-kernel - RE: [PATCH] Drivers: hv: vmbus: Raise retry/wait limits in vmbus_post

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Date:   Mon, 31 Oct 2016 10:06:30 +0000
From:   "Van De Ven, Arjan" <arjan.van.de.ven@...el.com>
To:     Vitaly Kuznetsov <vkuznets@...hat.com>,
        KY Srinivasan <kys@...rosoft.com>
CC:     "devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Haiyang Zhang <haiyangz@...rosoft.com>
Subject: RE: [PATCH] Drivers: hv: vmbus: Raise retry/wait limits in
 vmbus_post_msg()

> Ok,
> 
> I actually tested boot time with my patch and didn't see a difference
> (so I guess our first attempt to send messages usually succeeds) but if
> we're concearned about less-than-a-second boot time we'd rather keep the
> microseonds delay for first several attempts. I'll do v2.

of course we care about less-than-a-second boot time..
it's a virtual machine.. there's no reason the kernel should ever take more than 100 msec total
(including all drivers)