PCC Phase 2 (LU-12714)

[LU-11847] Add statistics for RW-PCC and RO-PCC Created: 10/Jan/19  Updated: 29/Aug/19

Status: Open
Project: Lustre
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Technical task Priority: Minor
Reporter: Qian Yingjin Assignee: Qian Yingjin
Resolution: Unresolved Votes: 0
Labels: None

Rank (Obsolete): 9223372036854775807

 Description   

To evaluate the PCC prefetching and evicting algorithm, we need to add statistics for RW-PCC and RO-PCC to calculate the Byte Hit Rate (BHR) and File Hit Rate (FHR).

Currently, we add following statistics for each client in llite.*.stats:

 

LPROC_LL_PCC_READ_BYTES,
LPROC_LL_PCC_WRITE_BYTES,
LPROC_LL_PCC_ATTACH,
LPROC_LL_PCC_DETACH,
LPROC_LL_PCC_OPEN,

 

 Comments   
Comment by Gerrit Updater [ 11/Jan/19 ]

Yingjin Qian (qian@ddn.com) uploaded a new patch: https://review.whamcloud.com/34012
Subject: LU-11847 pcc: Add statistics for PCC
Project: fs/lustre-release
Branch: pcc
Current Patch Set: 1
Commit: 10f1abee409e6a284bf37a1a0c6121fd007a9241

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