shell 处理文本数据性能异常低下，跪求shell高手解答！！！！

while read LINE
do
LINE=$(echo "${LINE}" | sed 's/#.*$//g' | sed /^[[:space:]]*$/d)
if [ -z "${LINE}" ]; then
continue
fi
s1=$(echo ${LINE} | awk '{print $1}')
s2=$(echo ${LINE} | awk '{print $2}' | sed 's/,/ /')
s3=$(echo ${LINE} | awk '{print $3}' | sed 's/,/ /')
s4=$(echo ${LINE} | awk '{print $4}')
s5=$(echo ${LINE} | awk '{print $5}')
done < “test.txt”

加一些分析日志等，先看最耗时的代码是哪一段