[Openstack] [SWIFT] PUTs and GETs getting slower
Hua ZZ Zhang
zhuadl at cn.ibm.com
Mon Aug 5 10:01:31 UTC 2013
For the second question, Swift doesn't use updatedb.mlocate in my mind. it
should be safe to disable it.
Based on the TOP output, it seems that the CPU workload of container
replicator and auditor are too high.
Perhaps you need to tune the config file to decrease their workload. paste
your config file of
container servers.
Best Regards,
Edward Zhang(张华)
Advisory Software Engineer
Software Standards & Open Source
Software
Emerging Technology Institute(ETI)
IBM China Software Development Lab
e-mail: zhuadl at cn.ibm.com
Klaus Schürmann
<klaus.schuermann
@mediabeam.com> To
"openstack at lists.openstack.org"
08/05/2013 05:26 <openstack at lists.openstack.org>,
PM cc
Subject
[Openstack] [SWIFT] PUTs and GETs
getting slower
Hi,
my Swift cluster is working for three weeks now as a mail storage and the
performance is getting slower and slower.
This is my hardware configuration:
- 1 hardware-loadbalancer
- 2 proxy-server DELL R420 16 GB RAM 2 Quadcore CPU
- 5 proxy-server DELL R720xd 16 GB RAM 2 Quadcore CPU with 3x 2TB HDD SATA
6GB/s
The cluster contains:
279.000 containers
8.170.000 objects = 984 GByte
I have about 3.000.000 GETs per day and 1.500.000 PUTs.
The load is raising up to 12 now:
top - 11:06:39 up 114 days, 23:10, 1 user, load average: 10.88, 11.26,
11.22
Tasks: 175 total, 3 running, 172 sleeping, 0 stopped, 0 zombie
%Cpu(s): 15.6 us, 9.8 sy, 0.0 ni, 69.3 id, 4.5 wa, 0.0 hi, 0.8 si,
0.0 st
KiB Mem: 16386408 total, 14829360 used, 1557048 free, 30796 buffers
KiB Swap: 17575932 total, 132604 used, 17443328 free, 5572360 cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
25880 swift 20 0 81400 15m 3352 D 34.5 0.1
2838:36 /usr/bin/python /usr/bin/swift-container-replicator /etc/swift/container-server.conf
24282 swift 20 0 81084 14m 3244 S 19.2 0.1
3835:23 /usr/bin/python /usr/bin/swift-container-auditor /etc/swift/container-server.conf
29816 swift 20 0 1523m 27m 2032 D 9.6 0.2
1132:58 /usr/bin/python /usr/bin/swift-object-server /etc/swift/object-server.conf
29812 swift 20 0 1523m 27m 2032 R 7.0 0.2
1169:50 /usr/bin/python /usr/bin/swift-object-server /etc/swift/object-server.conf
29815 swift 20 0 1523m 27m 2032 D 6.6 0.2
1132:45 /usr/bin/python /usr/bin/swift-object-server /etc/swift/object-server.conf
29809 swift 20 0 1523m 26m 2032 D 5.6 0.2
1163:53 /usr/bin/python /usr/bin/swift-object-server /etc/swift/object-server.conf
30684 swift 20 0 84496 16m 2468 D 5.6 0.1
1959:57 /usr/bin/python /usr/bin/swift-container-server /etc/swift/container-server.conf
13853 snmp 20 0 51844 3356 1800 S 5.3 0.0
32:14.90 /usr/sbin/snmpd -Lsd -Lf /dev/null -u snmp -g snmp -I -smux
-p /var/run/snmpd.pid
29810 swift 20 0 1523m 27m 2032 D 5.3 0.2
1132:09 /usr/bin/python /usr/bin/swift-object-server /etc/swift/object-server.conf
29813 swift 20 0 1525m 27m 2032 D 5.3 0.2
1177:23 /usr/bin/python /usr/bin/swift-object-server /etc/swift/object-server.conf
29811 swift 20 0 1524m 28m 2032 D 5.0 0.2
1169:37 /usr/bin/python /usr/bin/swift-object-server /etc/swift/object-server.conf
30677 swift 20 0 84932 17m 2468 D 5.0 0.1
1992:49 /usr/bin/python /usr/bin/swift-container-server /etc/swift/container-server.conf
29814 swift 20 0 1524m 27m 2032 D 4.6 0.2
1181:11 /usr/bin/python /usr/bin/swift-object-server /etc/swift/object-server.conf
30681 swift 20 0 84980 17m 2468 S 4.3 0.1
1999:12 /usr/bin/python /usr/bin/swift-container-server /etc/swift/container-server.conf
30678 swift 20 0 84684 17m 2468 D 4.0 0.1
1973:14 /usr/bin/python /usr/bin/swift-container-server /etc/swift/container-server.conf
30682 swift 20 0 84224 16m 2468 S 4.0 0.1
1960:55 /usr/bin/python /usr/bin/swift-container-server /etc/swift/container-server.conf
30685 swift 20 0 84356 16m 2468 D 3.6 0.1
1979:40 /usr/bin/python /usr/bin/swift-container-server /etc/swift/container-server.conf
7086 root 20 0 0 0 0 S 3.3 0.0 0:00.78 [kworker/6:1]
30683 swift 20 0 84160 16m 2468 S 3.3 0.1
1981:38 /usr/bin/python /usr/bin/swift-container-server /etc/swift/container-server.conf
30679 swift 20 0 83852 16m 2468 S 3.0 0.1
1965:53 /usr/bin/python /usr/bin/swift-container-server /etc/swift/container-server.conf
5935 root 20 0 0 0 0 S 2.7 0.0 0:16.38 [kworker/2:1]
6832 root 20 0 0 0 0 S 2.7 0.0 0:02.78 [kworker/4:0]
7153 swift 20 0 80300 9.8m 2040 D 2.7 0.1
0:00.08 /usr/bin/python /usr/bin/swift-container-updater /etc/swift/container-server.conf
1840 root 20 0 0 0 0 S 2.3 0.0 0:59.87 [kworker/0:1]
9630 swift 20 0 75796 6272 1708 D 2.0 0.0
1889:16 /usr/bin/python /usr/bin/swift-object-auditor /etc/swift/object-server.conf
9656 swift 20 0 87424 17m 2304 S 2.0 0.1
748:29.97 /usr/bin/python /usr/bin/swift-account-server /etc/swift/account-server.conf
9659 swift 20 0 86908 17m 2304 S 2.0 0.1
803:09.64 /usr/bin/python /usr/bin/swift-account-server /etc/swift/account-server.conf
9653 swift 20 0 85816 16m 2304 S 1.7 0.1
723:34.42 /usr/bin/python /usr/bin/swift-account-server /etc/swift/account-server.conf
9654 swift 20 0 87500 17m 2304 R 1.7 0.1
769:23.97 /usr/bin/python /usr/bin/swift-account-server /etc/swift/account-server.conf
9655 swift 20 0 85956 16m 2408 S 1.7 0.1
783:28.18 /usr/bin/python /usr/bin/swift-account-server /etc/swift/account-server.conf
9658 swift 20 0 87808 18m 2304 S 1.7 0.1
767:31.82 /usr/bin/python /usr/bin/swift-account-server /etc/swift/account-server.conf
32616 root 20 0 0 0 0 S 1.7 0.0 0:18.13 [kworker/3:0]
1826 syslog 20 0 243m 5124 856 S 1.3 0.0 329:10.12 rsyslogd -c5
6944 root 20 0 0 0 0 S 1.3 0.0 0:01.08 [kworker/7:2]
9652 swift 20 0 86896 17m 2412 S 1.3 0.1
663:32.21 /usr/bin/python /usr/bin/swift-account-server /etc/swift/account-server.conf
9657 swift 20 0 86016 16m 2408 S 1.3 0.1
706:22.08 /usr/bin/python /usr/bin/swift-account-server /etc/swift/account-server.conf
51 root 20 0 0 0 0 S 1.0 0.0 134:26.37 [kswapd0]
4548 root 20 0 0 0 0 S 1.0 0.0 0:11.69 [kworker/1:2]
5362 root 20 0 0 0 0 S 1.0 0.0 0:10.95 [kworker/5:3]
3 root 20 0 0 0 0 S 0.7 0.0 604:49.60 [ksoftirqd/0]
52 root 20 0 0 0 0 S 0.7 0.0 68:32.58 [kswapd1]
7412 swift 20 0 80300 9704 2780 S 0.7 0.1
566:00.53 /usr/bin/python /usr/bin/swift-container-updater /etc/swift/container-server.conf
9580 swift 20 0 75632 7140 2728 D 0.7 0.0
2218:06 /usr/bin/python /usr/bin/swift-object-auditor /etc/swift/object-server.conf
22178 root 20 0 7404 992 700 D 0.7 0.0
20:28.93 /usr/bin/updatedb.mlocate
Is this a memory problem or a harddisk problem?
And second question: On the server the mlocate database is rising. Can I
disable the updatedb.mlocate process and empty the database?
Thanks
Klaus
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