Re: [racket-users] Racket Web servlet performance benchmarked and compared

2017-09-09 Thread Jon Zeppieri
On Sat, Sep 9, 2017 at 8:05 PM, Jon Zeppieri wrote: > On Sat, Sep 9, 2017 at 7:52 PM, Jon Zeppieri wrote: >> >> It does seem odd, though, that the server seems to *favor* sending >> ACKs to clients it can't service over responding to the ones it can. > >

Re: [racket-users] Racket Web servlet performance benchmarked and compared

2017-09-09 Thread Jon Zeppieri
On Sat, Sep 9, 2017 at 7:52 PM, Jon Zeppieri wrote: > > It does seem odd, though, that the server seems to *favor* sending > ACKs to clients it can't service over responding to the ones it can. No, there has to be something else wrong. The tcpdump output shows significant

Re: [racket-users] Racket Web servlet performance benchmarked and compared

2017-09-09 Thread Jon Zeppieri
On Sat, Sep 9, 2017 at 6:25 PM, Jon Zeppieri wrote: > When I ran experiments similar to yours on OS X I saw some odd > scheduling behavior. It looks like after roughly 2^14 requests are > `accept`-ed, there's a *long* delay before the next one succeeds. It > appears that the

Re: [racket-users] Racket Web servlet performance benchmarked and compared

2017-09-09 Thread Jon Zeppieri
When I ran experiments similar to yours on OS X I saw some odd scheduling behavior. It looks like after roughly 2^14 requests are `accept`-ed, there's a *long* delay before the next one succeeds. It appears that the program is `poll`-ing, waiting for activity, but, for whatever reason, it doesn't

[racket-users] Strange gray lines in DrRacket editor

2017-09-09 Thread jaroslaw . modry
Recently I installed racket 6.10 (Windows version) on my new laptop (OS is Windows 10 Creators Update) and I noticed strange gray boxes when writing programs in the DrRacket editor (see picture attached). I assume it's related to my DPI settings which is set to 125% in the Display settings

Re: [racket-users] Re: Racket Web servlet performance benchmarked and compared

2017-09-09 Thread Neil Van Dyke
dbohdan wrote on 09/09/2017 02:40 PM: When I limit the memory usage in racket-custom to the total RAM on the VPS minus what the OS uses (through custodian-limit-memory) Racket quits with an out of memory error at the point when it would be killed by the OS. racket-scgi seems to behave the

[racket-users] Strange binding arrows in #lang web-server

2017-09-09 Thread Philip McGrath
I've been noticing some strange binding arrows in DrRacket when using #lang web-server. In the following (obviously contrived) example, hovering over the first use of `term` shows an arrow to the second use, hovering over the second use of `term` shows an arrow from the first use and an arrow to

Re: [racket-users] Re: Racket Web servlet performance benchmarked and compared

2017-09-09 Thread dbohdan
On Friday, September 8, 2017 at 1:09:19 PM UTC+3, Jay McCarthy wrote: > Wow! Thanks for all of this work. It is really interesting to see how > different the performance is on the Internet workload! Once again, you're welcome! See my reply to Neil Van Dyke for some reasoning about the Internet

Re: [racket-users] Re: Racket Web servlet performance benchmarked and compared

2017-09-09 Thread dbohdan
On Friday, September 8, 2017 at 4:29:34 PM UTC+3, Neil Van Dyke wrote: > dbohdan wrote on 09/07/2017 04:52 PM: > > The #/sec for each implementation are suspiciously similar. I wonder > whether they're limited by something like an accounting limit imposed on > the VPS (such as