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<div style="font-family:sans-serif"><div style="white-space:normal"><p dir="auto">As an Apple Developer since 1978, I can say that I quit using TM years ago. It is a consumer-level product, with modest capabilities and horrible reliability.</p>
<p dir="auto">You asked for a solution. You need more robust backup software, which offers a mimicking of TM.</p>
<p dir="auto">Two extremely reliable options are Carbon Copy Cloner and Chronosync. Both can be configured to run automatically whenever you like.</p>
<p dir="auto">Chronosync is extremely versatile, and can out-do TM in its level of granularity.</p>
<br><p dir="auto">Tracy<br>
www.valleau.art</p>
<br><br><br><p dir="auto">On 14 Dec 2017, at 9:00, mailmate-request@lists.freron.com wrote:</p>
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Today's Topics:<br>
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1. Re: High Sierra, APFS, Time Machine, and MailMate... (Roger Bohn)<br>
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Message: 1<br>
Date: Wed, 13 Dec 2017 09:45:44 -0800<br>
From: "Roger Bohn" <Rbohn@ucsd.edu><br>
To: "MailMate Users" <mailmate@lists.freron.com><br>
Subject: Re: [MlMt] High Sierra, APFS, Time Machine, and MailMate...<br>
Message-ID: <4355C63B-7270-4D4A-B4B8-B45D276873E0@ucsd.edu><br>
Content-Type: text/plain; charset="utf-8"; Format="flowed"<br>
<br>
I have had this situation for many YEARS, long before I got MailMate.<br>
The overall symptom is that backups take *many hours*, with sudden,<br>
inexplicable stalls. I say</p>
<blockquote style="border-left:2px solid #777; color:#999; margin:0 0 5px; padding-left:5px; border-left-color:#999"><p dir="auto">"inexplicable" because Activity Monitor shows essentially no CPU,<br>
network, or disk activity -- but the backup just *stops*.</p>
</blockquote><p dir="auto">The problem is worse, the more Time Machine needs to back up. And for<br>
reasons I have never figured out, even a routine backup on TM (of a few<br>
hours of material) can have 5GB of files to go through. As a result, I<br>
can get into a situation where TM is completely unable to get up to<br>
date.<br>
<br>
So I don’t know a solution, but don’t be too sure that it is really<br>
due to MM. If anyone finds a solution, please drop me a line!<br>
One thing that helps is to switch from WiFi to a hard ethernet<br>
connection. For some reason, TM is considerably faster that way.<br>
<br>
Roger Bohn, UC San Diego<br>
Rbohn@ucsd.edu<br>
<br>
On 10 Dec 2017, at 18:14, Steven M. Bellovin wrote:<br>
</p>
<blockquote style="border-left:2px solid #777; color:#999; margin:0 0 5px; padding-left:5px; border-left-color:#999"><p dir="auto">Seems like an improbable subject line--but is anyone else who uses<br>
MailMate on High Sierra/APFS suddenly having serious Time Machine<br>
performance issues? I am, on two different laptops. An iMac, which has<br>
a hard drive and hence HFS+, is not having any trouble.<br>
<br>
The overall symptom is that backups take *many hours*, with sudden,<br>
inexplicable stalls. I say "inexplicable" because Activity Monitor<br>
shows essentially no CPU, network, or disk activity -- but the backup<br>
just *stops*. I normally don't run MailMate on one of the laptops; its<br>
backups complete in a rational amount of time. When I do, it sees the<br>
same stalls. In fact, I'm running MailMate on it right now so that I<br>
can see what happens on my primary laptop when I exit MailMate. Sure<br>
enough, that machine is now behaving.<br>
<br>
My suspicion is that the problem has to do with very large directories<br>
on APFS file systems, but I don't know that for sure. I have some very<br>
large mailboxes, though, and these are of course active when MailMate<br>
is running. And of course, that doesn't explain why I don't see any<br>
system activity.<br>
<br>
Is anyone else seeing this? Does anyone have any work-arounds, other<br>
than "don't have such large mailboxes" or "don't run APFS"? I do have<br>
a new laptop on order; I'm seriously tempted to reformat it as HFS+<br>
before I start using it.<br>
<br>
<br>
--Steve Bellovin, <a href="https://www.cs.columbia.edu/~smb" style="color:#999">https://www.cs.columbia.edu/~smb</a><br>
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End of mailmate Digest, Vol 81, Issue 13<br>
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