On 09/11/2018 09:50 AM, Andrii Anisov wrote: > Hello Jan, > > > On 11.09.18 11:27, Jan Beulich wrote: >> NAK, for two reasons: I'm not of the opinion that reading a 15 or more >> digit decimal number without any separators is any easier than the >> current format. > It's quite subjective. IMHO timestamps measured in ns easier to > understand in decimals rather than in separated 32-bit hex-es. No matter > how many digital number they have. > Even post processing of perfc output is easier in case of decimal > timestamps. You should not parse hexes and odd separators to calculate > the time elapsed between two samples.
I agree with this. Printing in hexadecimal is useful if you need to see the bitwise structure of the content; that's of zero use when it comes to timestamps. On the contrary, you almost always want to be able to do a subtraction in your head and get at least an order-of-magnitude difference between the times, something which is far too difficult in hex. The fact that we even have PRI_stime is evidence that the developer community as a whole agrees. >> And then if you/we were to change this, then please >> uniformly everywhere - there's even a second instance right in this >> same file you change, not to speak of similar ones elsewhere Presumably the fact that we have PRI_stime defined means that *most* places already use this format, and the places with `:` in the middle are outliers. It's perfectly acceptable to change them one by one; changing them all should only be a suggestion. -George _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
