What does Threads_connected=-1 signify in MySQL?

Question

I was running the following: mysqladmin -u root -p ext -ri 10 | grep Threads_connected and was kind of surprised to find that Threads_connected could be -1:

| Threads_connected                 | 1            |
| Threads_connected                 | -1           |
| Threads_connected                 | 1            |
| Threads_connected                 | -1           |

What does the -1 signify?

This is on MySQL 5.0.77 on x86_64.

Thanks!

Answer 1

Perhaps you are seeing diff since last snapshot

Answer 2

Because you have -r for relative specified in mysqladmin, the -1 indicates that someone disconnected since the last sample. If you want to see the absolute values, remove -r.