Dmitry Beransky wrote:
Hi,
I'm having problems understanding the legend text for Wr & Rd columns
of the JK status report. What exactly do they mean? Here's a
concrete example:
Name Type Host Addr Act Stat D F M V Acc Err CE Wr Rd Busy Max Route RR Cd Rs
static_1 ajp13 localhost:8012 127.0.0.1:8012 ACT OK 0 1 1 61 9613 0
29 8.3M 48M 0 8 static_1 0
So Wr=8.3M and Rd=48M. This worker handles all static resources of
the website: images, scripts, styles, etc. If 48M is the amount of
data sent to the client, what is 4.8M?
Thanks
Dmitry
Yes, here the decision about which direction we mean is probably
irritating. mod_jk is a reverse proxy and sits between the client
(browser) and the backend (Tomcat). In this case the parameters are with
respect to the backend (i.e. the ajp13 communication channel mod_jk
completely controls). So Wr means the number of Bytes mod_jk sent to the
backend, and Rd is the amount of traffic we got back.
Both numbers are the raw number of bytes transferred, including AJP
protocol overhead (and of course including all other http information).
Regards,
Rainer
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