Comments on: Day 8 of 60: Sendmail queues http://jc.ngo.org.uk/blog/2006/07/17/day-8-of-60-sendmail-queues/ It'll all be over in 60 days Fri, 21 Nov 2008 23:10:02 +0000 http://wordpress.org/?v=2.0.7 by: Try before you buy » Blog Archive » Strategies for processing the queue. http://jc.ngo.org.uk/blog/2006/07/17/day-8-of-60-sendmail-queues/#comment-52 Fri, 11 Aug 2006 18:18:40 +0000 http://jc.ngo.org.uk/blog/2006/07/17/day-8-of-60-sendmail-queues/#comment-52 [...] Note: If you’re not familiar with sendmail queues, the sendmail queue primer I wrote might be useful. [...] […] Note: If you’re not familiar with sendmail queues, the sendmail queue primer I wrote might be useful. […]

]]> by: Try before you buy » Blog Archive » Day 26 of 60: Instrumenting Sendmail queue file creation (pt 1) http://jc.ngo.org.uk/blog/2006/07/17/day-8-of-60-sendmail-queues/#comment-41 Fri, 04 Aug 2006 16:34:40 +0000 http://jc.ngo.org.uk/blog/2006/07/17/day-8-of-60-sendmail-queues/#comment-41 [...] I’ve written previously about Sendmail queues. [...] […] I’ve written previously about Sendmail queues. […]

]]> by: Try before you buy » Blog Archive » Day 10 of 60: First probes added to Sendmail http://jc.ngo.org.uk/blog/2006/07/17/day-8-of-60-sendmail-queues/#comment-16 Wed, 19 Jul 2006 16:02:14 +0000 http://jc.ngo.org.uk/blog/2006/07/17/day-8-of-60-sendmail-queues/#comment-16 [...] Following Monday’s info dump about queues, I’ve spent some time over the last few days reading the DTrace documentation in detail. In particular, the Solaris Dynamic Tracing Guide. This is the DTrace handbook, with a great deal of information about how to use DTrace. [...] […] Following Monday’s info dump about queues, I’ve spent some time over the last few days reading the DTrace documentation in detail. In particular, the Solaris Dynamic Tracing Guide. This is the DTrace handbook, with a great deal of information about how to use DTrace. […]

]]> by: nik http://jc.ngo.org.uk/blog/2006/07/17/day-8-of-60-sendmail-queues/#comment-15 Tue, 18 Jul 2006 19:55:38 +0000 http://jc.ngo.org.uk/blog/2006/07/17/day-8-of-60-sendmail-queues/#comment-15 Byran, thanks for the comments. I'll be posting something to the DTrace discussion groups (and places like comp.mail.sendmail) when I've got something a little more concrete to show off. At the moment there's no actual code :-) Hopefully that should be in a day or two. I know that it's not strictly necessary to add these probes to Sendmail to get some (considerable) value from DTrace. But the stock providers that come with DTrace provide a vocabulary that's at quite a low level. There's nothing wrong with that, of course, but it's going to be interesting to see how much extra value there is in providing an additional application, or problem-domain, specific vocabulary. Byran, thanks for the comments.

I’ll be posting something to the DTrace discussion groups (and places like comp.mail.sendmail) when I’ve got something a little more concrete to show off. At the moment there’s no actual code :-) Hopefully that should be in a day or two.

I know that it’s not strictly necessary to add these probes to Sendmail to get some (considerable) value from DTrace. But the stock providers that come with DTrace provide a vocabulary that’s at quite a low level. There’s nothing wrong with that, of course, but it’s going to be interesting to see how much extra value there is in providing an additional application, or problem-domain, specific vocabulary.

]]> by: Bryan Cantrill http://jc.ngo.org.uk/blog/2006/07/17/day-8-of-60-sendmail-queues/#comment-14 Tue, 18 Jul 2006 17:11:41 +0000 http://jc.ngo.org.uk/blog/2006/07/17/day-8-of-60-sendmail-queues/#comment-14 This is great stuff -- you should post a link to it on dtrace-discuss@opensolaris.org if you get the chance and have the inclination. Also, I'm assuming you know this, but just to be sure: you know that you don't have to add USDT probes to sendmail to use DTrace on it, right? (<code>dtrace -n pid`pgrep -n sendmail`:::entry'{@[probefunc] = count()}'</code> is always good for a cheap laugh or two.) Anyway, USDT probes for sendmail would be/will be fantastic -- and I'm sure many in the DTrace community would be interested in this work... This is great stuff — you should post a link to it on dtrace-discuss@opensolaris.org if you get the chance and have the inclination. Also, I’m assuming you know this, but just to be sure: you know that you don’t have to add USDT probes to sendmail to use DTrace on it, right? (dtrace -n pid`pgrep -n sendmail`:::entry'{@[probefunc] = count()}' is always good for a cheap laugh or two.) Anyway, USDT probes for sendmail would be/will be fantastic — and I’m sure many in the DTrace community would be interested in this work…

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