Re: Performance issues with /gnu/store in virtual machines

2017-08-22 Thread Ludovic Courtès
Christopher Baines skribis: > On Tue, 22 Aug 2017 12:11:43 +0200 > l...@gnu.org (Ludovic Courtès) wrote: > >> Hi Chris, >> >> Christopher Baines skribis: >> >> > 1.130.19 0 3853 openat >> >> [...] >> >> > 13.560.193014 50 3853

Re: Performance issues with /gnu/store in virtual machines

2017-08-22 Thread Ludovic Courtès
iyzs...@member.fsf.org (宋文武) skribis: > l...@gnu.org (Ludovic Courtès) writes: > >> Hi Chris, >> >> Christopher Baines skribis: >> >>> 1.130.19 0 3853 openat >> >> [...] >> >>> 13.560.193014 50 3853 openat >> >> So openat(2) is 4 ord

Re: Performance issues with /gnu/store in virtual machines

2017-08-22 Thread 宋文武
l...@gnu.org (Ludovic Courtès) writes: > Hi Chris, > > Christopher Baines skribis: > >> 1.130.19 0 3853 openat > > [...] > >> 13.560.193014 50 3853 openat > > So openat(2) is 4 orders of magnitude slower in the VM, which is a > probl

Re: Performance issues with /gnu/store in virtual machines

2017-08-22 Thread Christopher Baines
On Tue, 22 Aug 2017 12:11:43 +0200 l...@gnu.org (Ludovic Courtès) wrote: > Hi Chris, > > Christopher Baines skribis: > > > 1.130.19 0 3853 openat > > [...] > > > 13.560.193014 50 3853 openat > > So openat(2) is 4 orders of m

Re: Performance issues with /gnu/store in virtual machines

2017-08-22 Thread Ludovic Courtès
Hi Chris, Christopher Baines skribis: > 1.130.19 0 3853 openat [...] > 13.560.193014 50 3853 openat So openat(2) is 4 orders of magnitude slower in the VM, which is a problem. I guess a large part of that is due to the fact that

Re: Performance issues with /gnu/store in virtual machines

2017-08-20 Thread Christopher Baines
On Sun, 20 Aug 2017 11:02:16 +0200 Ricardo Wurmus wrote: > Hi Chris, > > > So I was trying out using VMs created through Guix for more things, > > particularly as they can be run as part of derivations, e.g. the > > system tests for Guix. > > > > However, I'm seeing anything that does I/O perfor

Re: Performance issues with /gnu/store in virtual machines

2017-08-20 Thread Ricardo Wurmus
Hi Chris, > So I was trying out using VMs created through Guix for more things, > particularly as they can be run as part of derivations, e.g. the system > tests for Guix. > > However, I'm seeing anything that does I/O performing very poorly > compared with the host system. (I’m not using VMs as