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Date: Thu, 13 Mar 2014 18:03:59 +0200 From: Eli Cohen <eli@....mellanox.co.il> To: Carol Soto <clsoto@...ux.vnet.ibm.com> Cc: Ben Hutchings <ben@...adent.org.uk>, eli@...lanox.com, roland@...nel.org, sean.hefty@...el.com, hal.rosenstock@...il.com, linux-rdma@...r.kernel.org, netdev@...r.kernel.org, brking@...ux.vnet.ibm.com Subject: Re: [Patch 1/2] IB/mlx5: Implementation of PCI error handler On Thu, Mar 13, 2014 at 10:51:46AM -0500, Carol Soto wrote: > > The motivation to reduce that timeout is that if there is a process > in the middle of a HW command > in the middle of the PCI error, I probably did not want to wait 2hrs > since the command will never complete > since the card is dead. Now you are right, I forgot the case of big > memory registration where commands can > take longer than that. Do you have an idea of what is the longest > time that a command can take in mlx5? > There is no guranteed time for command completions. With current driver/firmware, registration of 4.5 GB can take around 2 minutes; for larger regions it can take even more time. As I mentioned earlier, I will soon send a patch that reduces registation times for large regions. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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