-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hey Mike,
I had a similar issue with Cygwin. Basically, I installed Cygwin when I created the image. Over the course of time I patched the OS, but not Cygwin. This caused problems. I eventually removed Cygwin, and reinstalled it (had to re-run the Cygwin patch up stuff again). (Pay close attention to who you are actually 'logged in as' when installing Cygwin. I think I needed to be 'root') Anyway, a reinstall of Cygwin helped me out. Hope this helps, __Jim On 2/29/2012 10:41 AM, Mike Haudenschild wrote: > Good afternoon, devs -- > > I've been experiencing slower than expected reservation provisioning times > on a VCL infrastructure that uses a SAN for all storage (all ESXi, on > blades). I first noticed it when I'd click the "Connect!" button on a > reservation and the RDP connection wouldn't open the first time. > Restarting the RDP client 15-30 seconds later, the connection would > succeed. > > Watching vcld.log, I found that connecting to the Cygwin shell from the > management node was taking 6-10 seconds (whereas the same connections on > servers using local-disk storage take 1-2 seconds). I can replicate the > behavior running ssh -i /etc/vcl/vcl.key <target machine> from the > management node. > > It really hit home when I started a bash shell LOCALLY (with bash --login > -i -x) on a target Windows VM and watched how long it took just to get to a > bash prompt. Each of the startup scripts took a long time. (I'm not > running bash-completion, a common complaint about slow Cygwin shell > startups.) > > I *think* -- requesting confirmation of this -- that each time the > management node wants to issue a command to a remote computer it initiates > a new SSH connection, then closes that connection when the command finishes > processing. Is that accurate? If so, that would mean that those 6-10 > seconds would be compounded several times over while the management node > prepares the remote computer for my reservation. I'm currently > investigating moving Cygwin into a RAMdisk on the VM images, but that only > makes sense if the above assumption about multiple SSH sessions is accurate. > > The latency on the SAN connection is very low, and ESXi reports that > latencies on the virtural disks are slow. I have /etc/hosts set up, DNS > resolves fine, and pings between the management node and VMs are fine. > > Has anyone else run into any similar behavior with Cygwin? > > Many thanks, > Mike > > -- > *Mike Haudenschild* > Education Systems Manager > Longsight Group > (740) 599-5005 x809 > m...@longsight.com > www.longsight.com > - -- Jim O'Dell Network Analyst California State University Fullerton Email: jod...@fullerton.edu Phone: (657) 278-2256 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk9Of5IACgkQREVHAOnXPYQu1QCfTcjbu1cat6jOpNRGGPGwlPsz TYkAn0smAWtrocgCiw2RssbShsm4b2gP =/8Pd -----END PGP SIGNATURE-----
