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* usr/lib/byobu/network:

Browse source 
- make network calculations drastically cheaper, by using status_freq
    rather than a file stat
This commit is contained in:
Dustin Kirkland 2011-08-15 20:45:37 -07:00
commit be7e9d7d12
2 changed files with 48 additions and 49 deletions
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3
debian/changelog vendored
View file

@ -47,6 +47,9 @@ byobu (4.30) unreleased; urgency=low
- combine mem_* to memory - combine mem_* to memory
- decrease raid status frequency - decrease raid status frequency
- add trailing space to logo - add trailing space to logo
* usr/lib/byobu/network:
- make network calculations drastically cheaper, by using status_freq
rather than a file stat
-- Dustin Kirkland <kirkland@ubuntu.com> Thu, 11 Aug 2011 10:31:31 -0500 -- Dustin Kirkland <kirkland@ubuntu.com> Thu, 11 Aug 2011 10:31:31 -0500

12
usr/lib/byobu/network
View file

@ -26,11 +26,12 @@ __network_detail() {
__network() { __network() {
get_network_interface; local interface="$_RET" get_network_interface; local interface="$_RET"
local t1=0 t2=0 x1=0 x2=0 local x1=0 x2=0
status_freq network
t="$_RET"
# By default, we won't bug the user with the display of network traffic # By default, we won't bug the user with the display of network traffic
# below NETWORK_THRESHOLD in kbps; override in $BYOBU_CONFIG_DIR/status # below NETWORK_THRESHOLD in kbps; override in $BYOBU_CONFIG_DIR/status
[ -n "$NETWORK_THRESHOLD" ] || NETWORK_THRESHOLD=20 [ -n "$NETWORK_THRESHOLD" ] || NETWORK_THRESHOLD=20
t2=`date +%s`
OIFS=$IFS OIFS=$IFS
for i in up down; do for i in up down; do
unit="kbps" unit="kbps"
@ -39,10 +40,6 @@ __network() {
down) symbol="$ICON_DN" ;; down) symbol="$ICON_DN" ;;
esac esac
cache="$BYOBU_RUN_DIR/network.$i" cache="$BYOBU_RUN_DIR/network.$i"
t1=`stat -c %Y "$cache"` 2>/dev/null || t1=0
if [ $t2 -le $t1 ]; then
rate=0
else
[ -r "$cache" ] && read x1 < "$cache" || tx1=0 [ -r "$cache" ] && read x1 < "$cache" || tx1=0
IFS="$OIFS:" IFS="$OIFS:"
while read iface rbytes rpackets rerrs rdrop rfifo rframe rcompressed rmulticast tbytes tpackets terrs tdrop tfifo tcolls tcarrier tcompressed; do while read iface rbytes rpackets rerrs rdrop rfifo rframe rcompressed rmulticast tbytes tpackets terrs tdrop tfifo tcolls tcarrier tcompressed; do
@ -53,7 +50,7 @@ __network() {
done < /proc/net/dev done < /proc/net/dev
IFS=$OIFS IFS=$OIFS
echo "$x2" > "$cache" echo "$x2" > "$cache"
rate=$((8*($x2 - $x1) / ($t2 - $t1) / 1024)) # in kbps rate=$((8*($x2 - $x1) / $t / 1024)) # in kbps
[ "$rate" -lt 0 ] && rate=0 [ "$rate" -lt 0 ] && rate=0
if [ $rate -gt $NETWORK_THRESHOLD ]; then if [ $rate -gt $NETWORK_THRESHOLD ]; then
case "$NETWORK_UNITS" in case "$NETWORK_UNITS" in
@ -87,7 +84,6 @@ __network() {
esac esac
color b m w; printf "%s%s" "$symbol" "$rate"; color -; color m w; printf "%s" "$unit"; color -- color b m w; printf "%s%s" "$symbol" "$rate"; color -; color m w; printf "%s" "$unit"; color --
fi fi
fi
done done
} }