Page Comparison

Operational Issues

Thomas, Jyothish (STFC,RAL,SC)

Gateways and WNs:
- Current status and upcoming changes

Thomas, Jyothish (STFC,RAL,SC)

• Tokens

• Checksum plugin (see below):

• Rocky 8 (see next

Rocky 8 migration planning

Thomas, Jyothish (STFC,RAL,SC)

• Technical impediments ?

• Performance comparisons:
  

  View file
  name rock8vssl7.pdf

  
  

• Plans for migration

  • What to do about the redirectors ?

S&C ATLAS week

James Walder

Next week S&C; Anything to discuss with Andy H et al. ?

ECHO File transfer / throughput studies

Katy Ellis

Updates?

Checksums fixes

Alexander Rogovskiy

Status and plans for improving Checksumming work …

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

• Code review complete; awaiting updates

• Packaging; how to package the rpm (headers from XrdCks only from xrootd source files … ?)

Prefetch studies and WN changes

Alexander Rogovskiy

Sandbox ready and applied to 1 WN, pending envroinment variable for timeout increase

Deletion studies through RDR

Ian Johnson

Latest deletion rates for 3 GiB files: 21 Hz

Desire deletion rate from ATLAS: ~ 4 Hz

Latest deletion rates for 1 KiB files: 59 Hz

Deletion rates measured using 10 threads (VM with 16 vCPUs). In conversation with CERN DDM, Rucio reaper is using 10 threads (for ATLAS?).

Next: measure deletion rate for 6 GiB files. Testing with 1 KiB files works up to 4000 files (deletion client on two VMs), but fails with 10000 files. InvestigInvestigating.

Tokens testing

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

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

Understanding CMSD Loadbalancing

Thomas Byrne

SKA Gateway box

James Walder

/wiki/spaces/UK/pages/215941180