On Mon, Jan 21, 2013 at 1:00 PM, Craig Ringer <cr...@2ndquadrant.com> wrote: > On 01/21/2013 08:55 PM, Noah Misch wrote: >> On Mon, Jan 21, 2013 at 10:01:29AM +0800, Craig Ringer wrote: >>> I've found EC2 to be unusably slow for Windows builds, with a medium >>> instance taking an hour and a half to do a simple build and "vcregress >>> check". They're also restrictive in disk space terms, so you land up >>> needing to add a second EBS volume. >> Yikes. The "build DEBUG" step takes 5-7 minutes for me; I use EBS-optimized >> m1.xlarge spot instances in US East (lately about US$0.19/hr). Fairly sure I >> once used a c1.medium, though, and it still took <10 minutes. I don't know >> why your experience has been so different. > I was using m1.medium instances, but the same instance type gets Linux > builds done in 15-20 mins. Slow, but not that slow. Performance was > consistently miserable across several instances, including one full > clean rebuild from scratch. Weird.
FYI, in my experience VC++ is typically much faster than GCC, on comparable hardware - particularly with C++. > I should perhaps give the bigger instances a go. Unfortunately Jenkins > can't auto-start and auto-stop Windows instances yet and I don't have > time to improve the Jenkins ec2 plugin right now, so using any instance > bigger than an m1.medium would pretty much require manually stopping and > starting it for builds. Yick. It should be trivial to script I would think - it's a one-liner to create an instance with ec2 tools. > Instead I'm using my home media PC, a Pentium G630 (like a cut-down Core > 2 i3) with a laptop hard drive. It completes builds in 20 minutes. My > more power-hungry laptop does it in 7. > > I was never able to determine why the Windows instances were so much > slower than the corresponding Linux instance of the same type. Full vs. para-virtualisation perhaps? -- Dave Page Blog: http://pgsnake.blogspot.com Twitter: @pgsnake EnterpriseDB UK: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
