Messages in this thread | | | Date | Sat, 17 Nov 2012 01:18:26 +0100 | From | Marc Duponcheel <> | Subject | Re: [3.6 regression?] THP + migration/compaction livelock (I think) |
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Hi David, others
Results seem OK
recap: I have 2 6core 64bit opterons and I make -j13
I do
# echo always >/sys/kernel/mm/transparent_hugepage/enabled # while [ 1 ] do sleep 10 date echo = vmstat egrep "(thp|compact)" /proc/vmstat echo = khugepaged stack cat /proc/501/stack done > /tmp/49361.xxxx # emerge icedtea (where 501 = pidof khugepaged)
for xxxx = base = 3.6.6 and xxxx = test = 3.6.6 + diff you provided
I attach /tmp/49361.base.gz and /tmp/49361.test.gz
Note:
with xxx=base, I could see PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 8617 root 20 0 3620m 41m 10m S 988.3 0.5 6:19.06 javac 1 root 20 0 4208 588 556 S 0.0 0.0 0:03.25 init already during configure and I needed to kill -9 javac
with xxx=test, I could see PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 9275 root 20 0 2067m 474m 10m S 304.2 5.9 0:32.81 javac 710 root 0 -20 0 0 0 S 0.3 0.0 0:01.07 kworker/0:1H later when processing >700 java files
Also note that with xxx=test compact_blocks_moved stays 0
hope this helps
Thanks
have a nice day
On 2012 Nov 15, Marc Duponcheel wrote: > Hi David > > Thanks for the changeset > > I will test 3.6.6 without&with this weekend. > > Have a nice day
-- Marc Duponcheel Velodroomstraat 74 - 2600 Berchem - Belgium +32 (0)478 68.10.91 - marc@offline.be [unhandled content-type:application/octet-stream][unhandled content-type:application/octet-stream] | |