[Bug 249871] NFSv4 faulty directory listings under heavy load

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=249871

--- Comment #7 from Jason W. Bacon <jwb at freebsd.org> ---

Doesn't appear to be an mbuf issue.  Running the two scripts below
simultaneously:

#!/bin/sh -e

cd AD-VCFs-whi/MAF-0.01-1000nt
while true; do
    ls | grep 'combined.*\.vcf\.xz' | wc -l
    sleep 2
done

   11035
   11033
   11031
   11031
   11027
   11030
   11031
   11031
   11038
   11031
   11032

#!/bin/sh -e

while true; do
    vmstat -z | egrep 'ITEM|mbuf_cluster'
    sleep 1
done

ITEM                   SIZE  LIMIT     USED     FREE      REQ FAIL SLEEP
mbuf_cluster:          2048, 2039976,    7360,    3042,1297272200,   0,   0
ITEM                   SIZE  LIMIT     USED     FREE      REQ FAIL SLEEP
mbuf_cluster:          2048, 2039976,    7304,    3098,1297298159,   0,   0
ITEM                   SIZE  LIMIT     USED     FREE      REQ FAIL SLEEP
mbuf_cluster:          2048, 2039976,    7548,    2854,1297322887,   0,   0
ITEM                   SIZE  LIMIT     USED     FREE      REQ FAIL SLEEP
mbuf_cluster:          2048, 2039976,    7428,    2974,1297348314,   0,   0
ITEM                   SIZE  LIMIT     USED     FREE      REQ FAIL SLEEP
mbuf_cluster:          2048, 2039976,    7208,    3194,1297374731,   0,   0
ITEM                   SIZE  LIMIT     USED     FREE      REQ FAIL SLEEP
mbuf_cluster:          2048, 2039976,    7302,    3100,1297403922,   0,   0
ITEM                   SIZE  LIMIT     USED     FREE      REQ FAIL SLEEP
mbuf_cluster:          2048, 2039976,    7394,    3008,1297434774,   0,   0
ITEM                   SIZE  LIMIT     USED     FREE      REQ FAIL SLEEP
mbuf_cluster:          2048, 2039976,    7455,    2947,1297464218,   0,   0
ITEM                   SIZE  LIMIT     USED     FREE      REQ FAIL SLEEP
mbuf_cluster:          2048, 2039976,    7503,    2899,1297489544,   0,   0
ITEM                   SIZE  LIMIT     USED     FREE      REQ FAIL SLEEP
mbuf_cluster:          2048, 2039976,    7381,    3021,1297516540,   0,   0
ITEM                   SIZE  LIMIT     USED     FREE      REQ FAIL SLEEP
mbuf_cluster:          2048, 2039976,    7432,    2970,1297539052,   0,   0

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