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Type: New Feature
Resolution: Fixed
Priority: Major
Fix Version/s: Lustre 2.4.0
Affects Version/s: Lustre 2.4.0
Labels:
- performance

Bugzilla ID:
16,900
Epic:
- lnet
Rank (Obsolete):
4038

Currently Lustre maximum buffer size for a RPC sending I/O is 1MB. This work looks to change the amount of data transfer to allow the data sent to be a size to achieve peak performance with large I/O transfers to the back end disk. Also an additional benefit is the reduction in the round trip time to send the data.

is related to

LU-4533 rpc_stats histogram does not support max_rpcs_in_flight greater than 31

Open

LU-3308 large readdir chunk size slows unlink/"rm -r" performance

Reopened

LU-2791 Stuck client on server OOM/lost message

Resolved

LU-2816 sanity-benchmark test_bonnie slow after 4MB BRW RPC patch

Resolved

LU-2598 obdfilter-survey LBUG ASSERTION( iobuf->dr_npages < iobuf->dr_max_pages ) failed

Resolved

LU-2790 Failure to allocated osd keys leads to ofd_intent_policy()) ASSERTION( res_lvb != ((void *)0) ) failed

Resolved

LU-3438 replay-ost-single test_5 failed with error int check_write_rcs() "Unexpected # bytes transferred"

Resolved

LU-2748 OSD uses kmalloc with high order to allocate a keys

Resolved

LUDOC-80 4MB RPC Doc Changes

Resolved

is related to

LUDOC-80 4MB RPC Doc Changes

Resolved

LU-2424 add memory limits for ptlrpc service

Resolved

Trackbacks

Lustre Community Development in Progress Features are being developed for future Lustre releases both at Whamcloud and by other organizations in the Lustre community. These will be eligible for inclusion in future Lustre releases as per our processes

(4 is related to, 2 is related to , 1 Trackbacks)

Progress

1.	client read RPCs do not generate read requests in brw_stats	Resolved	Andreas Dilger
2.	increase OST_BUFSIZE to allow multiple request handling	Resolved	Liang Zhen (Inactive)
3.	OSD uses kmalloc with high order to allocate a keys	Resolved	Alex Zhuravlev

Assignee:: Peter Jones

Reporter:: James A Simmons

Votes:: 0 Vote for this issue

Watchers:: 19 Start watching this issue

Created:: 22/May/12 11:55 AM

Updated:: 08/Dec/20 5:50 AM

Resolved:: 14/May/13 3:34 PM

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