timing-diagram

I'm looking for an easy language/command line utility to draw sequence and timing diagrams (could be 2 different tools). I've already found Mscgen for sequence diagram drawing and looks pretty good, but I'm studying other possibilities. Thanks The best software I've found and I usually use to make sequence diagrams from plain text is SDEdit . It's a Java tool, so you can use it in any operating system. And it's free software! With this tool, you write the following: #![SD ticket order] ext:External[pe] user:Actor /order:Order[x] db:TicketDB acc:Account ext:user.order a ticket! user:order.new()

I have a query which involves getting a list of user from a table in sorted order based on at what time it was created. I got the following timing diagram from the chrome developer tools. You can see that TTFB (time to first byte) is too high. I am not sure whether it is because of the SQL sort. If that is the reason then how can I reduce this time? Or is it because of the TTFB. I saw blogs which says that TTFB should be less (< 1sec). But for me it shows >1 sec. Is it because of my query or something else? I am not sure how can I reduce this time. I am using angular. Should I use angular to