[powerdev-hosting] Low download speeds on OSU CI VMs
Allen Bailey
eabailey at us.ibm.com
Thu May 11 15:50:32 UTC 2017
Hi All,
The reason we are particularly vulnerable to network problems is in part
due to a huge amount of downloading that happens during a normal fabric
build: docker images, git clones, and apt updates, among others. Mirroring
would make our automated build process more *reliable*, and *perhaps*
faster depending on the circumstances. However, unless the network used to
connect to the repo (whether private or public) has sufficient bandwidth,
the issue still exists.
As an aside, the ubuntu ppc64le repositories are tiny in number, and the
default one is in the UK. I think having a local repo for this platform at
least makes sense.
Allen Bailey
z/OS Communications Server
Development and Test
J312/Bldg 501
Tie-line: 441-1197 Outside line: (919)543-1197
eabailey at us.ibm.com
"However beautiful the strategy, you should occasionally look at the
results." -- Winston Churchill
From: Smita Bodepudi/Austin/IBM
To: Barry Mosakowski/Raleigh/IBM at IBMUS
Cc: powerdev-hosting at osuosl.org, Ramesh Thoomu/San
Francisco/Contr/IBM at IBMUS, Srirama Sharma/India/IBM at IBMIN,
Allen Bailey/Raleigh/IBM at IBMUS
Date: 05/11/2017 09:58 AM
Subject: Re: Low download speeds on OSU CI VMs
Hi Barry,
Slow network on Oregon State University VMs might be one of the issues we
are trying to resolve. I have a meeting with them and will talk to them
today.
Apart from that we can definitely try alternatives like mirroring if it's
not too much trouble. Please let me know what needs to be done. Thank you!
Regards,
Smita.
*********************************************************
Smita Bodepudi
Power Open Source Solutions Development
11501 Burnet Road.
Austin, TX-78759
(512)286-5385
*********************************************************
From: Barry Mosakowski/Raleigh/IBM
To: Smita Bodepudi/Austin/IBM at IBMUS
Cc: powerdev-hosting at osuosl.org, Ramesh Thoomu/San
Francisco/Contr/IBM at IBMUS, Srirama Sharma/India/IBM at IBMIN,
Allen Bailey/Raleigh/IBM at IBMUS
Date: 05/11/2017 08:00 AM
Subject: Re: Low download speeds on OSU CI VMs
Hi Smita,
....adding Allen Bailey.
Please keep me honest here. It sounds like it isn't Power itself, but the
network (internet or intranet) causing the slowdown and failed Power
verifications? Allen suggesting creating a mirror to pull the images from?
This isn't very complicated and may resolve the issue.
What do you think?
Thanks,
Barry
__________________________________________________________________________________________________________________
Barry Mosakowski
Software Engineer
4205 South Miami Blvd.
RTP, NC 27709
(919) 254-4786
From: Smita Bodepudi/Austin/IBM
To: powerdev-hosting at osuosl.org
Cc: Ramesh Thoomu/San Francisco/Contr/IBM at IBMUS, Barry
Mosakowski/Raleigh/IBM at IBMUS, Srirama Sharma/India/IBM at IBMIN
Date: 05/10/2017 02:07 PM
Subject: Low download speeds on OSU CI VMs
Hi All,
Our Blockchain builds on our CI systems are taking very long time compared
to other platforms, so we are
investigating where the bottleneck is. One observation we made is the
problem with download speed on these Power nodes.
|------------------------------------+------------------------------------|
|IP |Download speed |
|------------------------------------+------------------------------------|
|Power: 140.211.168.107 |3.83 Mbit/s |
|------------------------------------+------------------------------------|
|Power: 140.211.168.178 |5.16 Mbit/s |
|------------------------------------+------------------------------------|
|Power: 140.211.168.157 |3.24 Mbit/s |
|------------------------------------+------------------------------------|
|Power: 140.211.168.108 |3.81 Mbit/s |
|------------------------------------+------------------------------------|
| | |
|------------------------------------+------------------------------------|
| | |
|------------------------------------+------------------------------------|
|Our lab Power systems: | 315.08 Mbit/s |
|------------------------------------+------------------------------------|
| |263.75 Mbit/s |
|------------------------------------+------------------------------------|
| | |
|------------------------------------+------------------------------------|
|x86 |226.54 Mbit/s |
|------------------------------------+------------------------------------|
|s390x(Z) |326.61 Mbit/s |
|------------------------------------+------------------------------------|
Our builds are taking the longest of all the three platforms.
Z build: 45-50min
x86 build: 80-100min
Power: 120-130min
We are trying to see if slow network download speed could be one of the
issues. Please check and let us know.
Regards,
Smita.
*********************************************************
Smita Bodepudi
Power Open Source Solutions Development
11501 Burnet Road.
Austin, TX-78759
(512)286-5385
*********************************************************
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