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\uD83D\uDDD3 Date

\uD83D\uDC65 Participants

Apologies:

CC:

\uD83E\uDD45 Goals

  • List of Epics

  • New tickets

  • Consider new functionality / items

  • Detailed discussion of important topics

  • Site report activity

\uD83D\uDDE3 Discussion topics

Current status of Echo Gateways / WNs testing

Recent sandbox’s for review / deployments:

Item

Presenter

Notes

Operational Issues over the Holiday period

Thomas, Jyothish (STFC,RAL,SC)

Gateways and WNs:
- Current status and upcoming changes

Thomas, Jyothish (STFC,RAL,SC)

stable status currently

  • tokens deployment cms/atlas

  • checksum library

  • prefetch off on WNs

To resist installing 5.6.4; before the break, one sets of sets (TPC transfers) was failing against another site. To repeat the tests and see

Rocky 8 ? for the Gateways (Thomas, Jyothish (STFC,RAL,SC) working on a initial setup).

bugfix for calculating striper objects in direct reads

https://github.com/stfc/xrootd-ceph/pull/50

ECHO File transfer / throughput studies

Katy Ellis

Tests of per-file transfer writes into Echo.
A new Jira is set up to track these changes:

Jira Legacy
serverSystem JIRA
serverId929eceee-34b0-3928-beeb-a1a37de31a8b
keyXRD-80

Updates presented at Liaison meeting yesterday.
Preliminary results from iperf3 testing:

iperfcomp.png

Checksums fixes

Alexander Rogovskiy

Status and plans for improving Checksumming work …

https://github.com/alex-rg/xrd_ckslib/tree/main
I

Jira Legacy
serverSystem JIRA
serverId929eceee-34b0-3928-beeb-a1a37de31a8b
keyXRD-56

(Sandbox prepare and applied to GW8)

Prefetch studies and WN changes

Alexander Rogovskiy

Deletion studies through RDR

Ian Johnson

Tokens testing

Thomas, Jyothish (STFC,RAL,SC) Katy Ellis

Jira Legacy
serverSystem JIRA
serverId929eceee-34b0-3928-beeb-a1a37de31a8b
keyXRD-63

Jira Legacy
serverSystem JIRA
serverId929eceee-34b0-3928-beeb-a1a37de31a8b
keyXRD-78

https://github.com/xrootd/xrootd/pull/2151/files

Understanding CMSD Loadbalancing

Thomas Byrne

View file
nameCMSD_loadbalancing.pptx
View file
nameXRootD CMSD SelByLoad Analysis-20.pdf

SKA Gateway box

James Walder

/wiki/spaces/UK/pages/215941180

Architectural review ‘hackathon’

All

Plan the process for the Architectural planning of XRootD across the External Gateways and WNs

2024 Planning

JW to prepare a summary of the plans for 2024

on GGUS:

Site reports

Lancaster -

Glasgow -

✅ Action items

  • James Walder to schedule a ‘hackathon’ within a F2F to have a session on architectural planning.

    Katy Ellis to run (and help coordinate) additional tests on File transfer performance, to understand the differences between SVC/new network and GW / legacy network hosts that suggest different levels of performance.

    These tests to involve iperf testing, and concurrent FTS-issued file transfer testing

    .

  • James Walder to prepare an outline of the expected roadmap for XRootD developments in 2024.

⤴ Decisions

...