If you don't have the time to say hi to a passing cat, you need toslow down.

If you never have time to say hi to passing cats, you definitely need to slow down.

(Aphorism void where prohibited by allergies. Applications to thetypical sysadmin lifestyle are left as an exercise for the readers.)

Back in June, I wrote about how unchanging systems should be stable . There isan important consequence of this:

To control stability, you must control change.

(This clearly follows from change being the only thing can destabilizeyour unchanging stable systems.)

I think that this is subtly different from taking changes carefullybecause the changes themselves could possibly be broken. This is therealization that any change may perturb the overall system, requiringit to be restabilized; it is the need to control what one has definedas the

It turns out that I'm wrong about several things I mentioned in GetAllObjects , although the code there is still useful and as correct asyou can reasonably get. However, it does have a few limitations and maymiss objects under some circumstances.

First, gc.get_objects actually returns all container objects .In specific, it returns all objects that can participate in referencecycles; this necessarily includes all container objects (dicts, tuples,and lists), but also include other types as well. (My

This week we received 11,661 email messages from 245 different IPaddresses. Our SMTP server handled 49,500 sessions from 5,900different IP addresses. Email volume has held steady from last week , but session volume isdown.

Overall connections are actually up from previous weeks: 251,000, fromat least 41,000 different IP addresses. Our SMTP frontend hit 50simultaneous pending connections early in the week,