timestampFile <- "timestamps.txt"
memstatFile <- "memstat.txt"

lines <- readLines(timestampFile)
lines <- lines[grep("^[0-9]+", lines)]
lines <- gsub(".---", "", lines)
tm <- read.table(text=lines, col.names=c("timestamp", "text"), sep="|", quote="", stringsAsFactors=FALSE)
tm <- tm[as.logical(nzchar(tm$text)),]

lines <- readLines(memstatFile, warn=FALSE)
cn <- as.character(read.table(text=lines[1L], nrows=1, comment="", stringsAsFactors=FALSE)[1, -1])
mm <- read.table(text=lines[c(-1L, -length(lines))], header=FALSE, col.names=cn, stringsAsFactors=FALSE)

## remove first occurence of duplicated timestamps
#tm <- tm[!rev(duplicated(rev(tm$timestamp))),]
## remove everything that is before running synapter
minTime <- min(tm$timestamp)
maxTime <- max(tm$timestamp)
mm <- mm[minTime <= mm$Time & mm$Time <= maxTime,]
mm$Time <- mm$Time - minTime
tm$timestamp <- tm$timestamp - minTime

mm$Time <- mm$Time / 60
tm$timestamp <- tm$timestamp / 60

mm$VSZ <- mm$VSZ/1024
mm$RSS <- mm$RSS/1024

png("usage.png", width=1e4, height=1e3)
plot(mm$Time, mm$VSZ, type="b", col="#377eb8", pch=15, ylim=c(0, max(mm$VSZ)),
     xaxt="n",
     main="Memory/CPU Usage synergise2",
     xlab="Time [min]", ylab="Memory Usage [MB]")
axis(1, at=seq(0, max(tm$timestamp), by=5))
lines(mm$Time, mm$RSS, type="b", col="#4daf4a", pch=16)
grid()
abline(v=tm$timestamp, col="#e41a1c", lty=3)
text(x=tm$timestamp, y=0, labels=tm$text, srt=90, col="#e41a1c", pos=4)
abline(h=2e4, col="#ff7f00", lty=4)
text(x=par("usr")[2], y=2e4, labels="20 GB", col="#ff7f00", pos=2)
par(new=TRUE)
plot(mm$Time, mm$X.usr, type="b", pch=17, col="#984ea3",
     xaxt="n", yaxt="n", xlab="", ylab="", ylim=c(0, max(mm$X.usr)))
axis(4)
mtext("CPU usage [%]", side=4, line=3)
legend("bottomright", legend=c("Virtual Size", "Resident Set Size", "CPU Usage", "Events"),
       col=c("#377eb8", "#4daf4a", "#984ea3", "#e41a1c"),
       pch=c(15:17, NA), lwd=c(0, 0, 0, 1), bg="#ffffff")
dev.off()