Message boards : ATLAS application : Slow download to LHC
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Greger

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Message 43523 - Posted: 23 Oct 2020, 19:26:21 UTC
Last modified: 23 Oct 2020, 19:43:17 UTC

For download to lhcathome-upload.cern.ch 137.138.xx.xx CERN-GPN it's been reduced to around 320KBps (2.7 Mbit/s on network monitor) for all host. Looking at host they grab Atlas at this stage. It looks like each host is fixed to this speed for each download.

And 188.185.xx.xxx got even lower at 1.50 Mbit/s.

In total with several host download currently it max 25 Mbit/s
While on download i did speedtest to local server and got full speed (around 300Mbit/s) and squid give full network speed when possible.

Upload is unaffected.



Download Upload Ping


speedtest.net
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Harri Liljeroos
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Message 43525 - Posted: 23 Oct 2020, 21:23:30 UTC

I just downloaded 5 Atlas tasks simultaneously. My speeds were about 10 times what you were showing, the total was about 85 Mbit/s on a 100 Mbit/s internet connection. So no problems here.
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Greger

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Message 43527 - Posted: 23 Oct 2020, 22:10:02 UTC
Last modified: 23 Oct 2020, 22:15:33 UTC

ok thanks

Edit: Now back to normal at least for one host. Could be short limit.
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Message boards : ATLAS application : Slow download to LHC


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