Hi!
Today i'm running squid 2.6 stable18 on FreeBSD 6.3 in a Acer R710 Server.
Client have 3000 users
But performance is poor.
Consults has the method to be allowed to improve?
My hardware is:
CPU: Intel(R) Xeon(TM) CPU 3.20GHz *2
RAM: 4G
HD: SEAGATE ST373207LC * 4 (320M/s 10000 RPM)
#uname -a
proxy4 -joejoe-:uname -a
FreeBSD proxy4.tw 6.3-PRERELEASE FreeBSD 6.3-PRERELEASE #1: Sat Nov 17
11:45:41 CST 2007
root@proxy4.tw:/usr/obj/usr/src/sys/PROXY i386
#mount
/dev/da0s1a on / (ufs, local)
devfs on /dev (devfs, local)
/dev/da0s1f on /squidlogs (ufs, local, soft-updates)
/dev/da0s1d on /usr (ufs, local, soft-updates)
/dev/da0s1e on /var (ufs, local, soft-updates)
/dev/da0s1g on /tmp (ufs, local, soft-updates)
/dev/da1s1d on /bcache1 (ufs, local, noatime, soft-updates)
/dev/da1s1e on /bcache2 (ufs, local, noatime, soft-updates)
/dev/da1s2d on /bcache3 (ufs, local, noatime, soft-updates)
/dev/da1s2e on /bcache4 (ufs, local, noatime, soft-updates)
/dev/da1s3d on /bcache5 (ufs, local, noatime, soft-updates)
/dev/da1s3e on /bcache6 (ufs, local, noatime, soft-updates)
/dev/da1s4d on /bcache7 (ufs, local, noatime, soft-updates)
/dev/da1s4e on /bcache8 (ufs, local, noatime, soft-updates)
/dev/da2s1d on /ccache1 (ufs, local, noatime, soft-updates)
/dev/da2s1e on /ccache2 (ufs, local, noatime, soft-updates)
/dev/da2s2d on /ccache3 (ufs, local, noatime, soft-updates)
/dev/da2s2e on /ccache4 (ufs, local, noatime, soft-updates)
/dev/da2s3d on /ccache5 (ufs, local, noatime, soft-updates)
/dev/da2s3e on /ccache6 (ufs, local, noatime, soft-updates)
/dev/da2s4d on /ccache7 (ufs, local, noatime, soft-updates)
/dev/da2s4e on /ccache8 (ufs, local, noatime, soft-updates)
/dev/da3s1d on /dcache1 (ufs, local, noatime, soft-updates)
/dev/da3s1e on /dcache2 (ufs, local, noatime, soft-updates)
/dev/da3s2d on /dcache3 (ufs, local, noatime, soft-updates)
/dev/da3s2e on /dcache4 (ufs, local, noatime, soft-updates)
/dev/da3s3d on /dcache5 (ufs, local, noatime, soft-updates)
/dev/da3s3e on /dcache6 (ufs, local, noatime, soft-updates)
/dev/da3s4d on /dcache7 (ufs, local, noatime, soft-updates)
/dev/da3s4e on /dcache8 (ufs, local, noatime, soft-updates)
#df -h
Filesystem Size Used Avail Capacity Mounted on
/dev/da0s1a 9.7G 70M 8.8G 1% /
devfs 1.0K 1.0K 0B 100% /dev
/dev/da0s1f 10G 1.2G 8.1G 13% /squidlogs
/dev/da0s1d 19G 10G 7.8G 56% /usr
/dev/da0s1e 19G 103M 18G 1% /var
/dev/da0s1g 5.8G 92K 5.4G 0% /tmp
/dev/da1s1d 7.8G 6.0G 1.2G 84% /bcache1
/dev/da1s1e 7.8G 6.0G 1.1G 84% /bcache2
/dev/da1s2d 7.8G 6.0G 1.1G 84% /bcache3
/dev/da1s2e 7.8G 6.0G 1.1G 84% /bcache4
/dev/da1s3d 7.8G 6.0G 1.1G 84% /bcache5
/dev/da1s3e 7.8G 6.0G 1.2G 84% /bcache6
/dev/da1s4d 7.8G 6.0G 1.1G 84% /bcache7
/dev/da1s4e 7.8G 6.0G 1.1G 84% /bcache8
/dev/da2s1d 7.8G 6.0G 1.2G 84% /ccache1
/dev/da2s1e 7.8G 6.0G 1.1G 84% /ccache2
/dev/da2s2d 7.8G 6.0G 1.1G 84% /ccache3
/dev/da2s2e 7.8G 6.0G 1.1G 84% /ccache4
/dev/da2s3d 7.8G 6.0G 1.2G 84% /ccache5
/dev/da2s3e 7.8G 6.0G 1.1G 84% /ccache6
/dev/da2s4d 7.8G 6.0G 1.2G 84% /ccache7
/dev/da2s4e 7.8G 6.0G 1.2G 84% /ccache8
/dev/da3s1d 7.8G 6.0G 1.1G 84% /dcache1
/dev/da3s1e 7.8G 6.0G 1.1G 84% /dcache2
/dev/da3s2d 7.8G 6.0G 1.1G 84% /dcache3
/dev/da3s2e 7.8G 6.0G 1.2G 84% /dcache4
/dev/da3s3d 7.8G 6.0G 1.1G 84% /dcache5
/dev/da3s3e 7.8G 6.0G 1.2G 84% /dcache6
/dev/da3s4d 7.8G 6.0G 1.1G 84% /dcache7
/dev/da3s4e 7.8G 6.0G 1.2G 84% /dcache8
My kernel was compiled in the day before yesterday with some tunning
options:
Commented:
options PAE
options MAXFILES=16384
In /boot/loader.conf file :
kern.ipc.msgmnb=16384 # Origin: 2048
kern.ipc.msgmni=96 # Origin: 40
kern.ipc.msgseg=2048 # Origin: 2048
kern.ipc.msgssz=64 # Origin: 8
kern.ipc.msgtql=5120 # Origin: 40
kern.geom.debugflags=16
machdep.hyperthreading_allowed=1
kern.maxdsiz="2147483648" # 2GB
kern.dfldsiz="2147483648" # 2GB
kern.maxssiz="268435456" # 256MB
kern.ipc.maxsockets="4008"
kern.ipc.nmbclusters="32768"
kern.ipc.nmbufs="65535"
kern.ipc.nsfbufs="2496"
net.inet.tcp.tcbhashsize="2048"
In /etc/sysctl.conf file :
net.inet.ip.portrange.first=20000 # Origin: 49152
net.inet.tcp.blackhole=2
net.inet.udp.blackhole=1
net.inet.tcp.recvspace=65535
net.inet.tcp.sendspace=65535
kern.ipc.somaxconn=32768
kern.ipc.maxsockbuf=2097152
net.inet.ip.redirect=0
net.inet.icmp.icmplim=100
net.inet.udp.maxdgram=65535
net.local.stream.sendspace=65535
net.local.stream.recvspace=65535
kern.maxfiles=65536
kern.maxfilesperproc=65536
net.inet.tcp.msl=7500
kern.securelevel=0
In squid.conf file :
# SCSI Channel B HD * 8
cache_dir diskd /bcache1 7500 32 64 Q1=72 Q2=64
cache_dir diskd /bcache2 7500 32 64 Q1=72 Q2=64
cache_dir diskd /bcache3 7500 32 64 Q1=72 Q2=64
cache_dir diskd /bcache4 7500 32 64 Q1=72 Q2=64
cache_dir diskd /bcache5 7500 32 64 Q1=72 Q2=64
cache_dir diskd /bcache6 7500 32 64 Q1=72 Q2=64
cache_dir diskd /bcache7 7500 32 64 Q1=72 Q2=64
cache_dir diskd /bcache8 7500 32 64 Q1=72 Q2=64
# SCSI Channel C HD * 8
cache_dir diskd /ccache1 7500 32 64 Q1=72 Q2=64
cache_dir diskd /ccache2 7500 32 64 Q1=72 Q2=64
cache_dir diskd /ccache3 7500 32 64 Q1=72 Q2=64
cache_dir diskd /ccache4 7500 32 64 Q1=72 Q2=64
cache_dir diskd /ccache5 7500 32 64 Q1=72 Q2=64
cache_dir diskd /ccache6 7500 32 64 Q1=72 Q2=64
cache_dir diskd /ccache7 7500 32 64 Q1=72 Q2=64
cache_dir diskd /ccache8 7500 32 64 Q1=72 Q2=64
# SCSI Channel D HD * 8
cache_dir diskd /dcache1 7500 32 64 Q1=72 Q2=64
cache_dir diskd /dcache2 7500 32 64 Q1=72 Q2=64
cache_dir diskd /dcache3 7500 32 64 Q1=72 Q2=64
cache_dir diskd /dcache4 7500 32 64 Q1=72 Q2=64
cache_dir diskd /dcache5 7500 32 64 Q1=72 Q2=64
cache_dir diskd /dcache6 7500 32 64 Q1=72 Q2=64
cache_dir diskd /dcache7 7500 32 64 Q1=72 Q2=64
cache_dir diskd /dcache8 7500 32 64 Q1=72 Q2=64
cache_mem 1536 MB
cache_swap_low 80
cache_swap_high 90
maximum_object_size 16 MB
minimum_object_size 0 KB
maximum_object_size_in_memory 500 KB
ipcache_size 32768
ipcache_low 85
ipcache_high 95
fqdncache_size 32768
cache_replacement_policy lru
memory_replacement_policy lru
dns_children 32
request_body_max_size 100 MB
half_closed_clients off
store_avg_object_size 32 KB
# top -d 1
last pid: 60798; load averages: 1.02, 0.99, 0.86 up 2+06:36:15
11:09:01
100 processes: 2 running, 98 sleeping
CPU states: % user, % nice, % system, % interrupt, %
idle
Mem: 1876M Active, 1750M Inact, 204M Wired, 165M Cache, 112M Buf, 5660K Free
Swap: 8065M Total, 104K Used, 8065M Free
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND
60456 squid 1 105 0 1839M 1834M CPU2 2 31:06 83.89% squid
60490 squid 1 -4 0 1888K 988K msgwai 2 0:03 0.00%
diskd-daemon
60498 squid 1 -4 0 1888K 1084K msgwai 2 0:03 0.00%
diskd-daemon
60502 squid 1 -4 0 1888K 980K msgwai 0 0:03 0.00%
diskd-daemon
60509 squid 1 -4 0 1888K 964K msgwai 0 0:02 0.00%
diskd-daemon
60506 squid 1 -4 0 1888K 1004K msgwai 1 0:02 0.00%
diskd-daemon
........
#squid -v
Squid Cache: Version 2.6.STABLE18
configure options:
'--prefix=/squid'
'--enable-gnuregex'
'--with-aufs-threads=320'
'--with-pthreads'
'--with-aio'
'--with-dl'
'--enable-async-io'
'--enable-storeio=ufs,diskd,aufs,null'
'--enable-removal-policies=heap lru'
'--disable-wccp'
'--enable-kill-parent-hack'
'--enable-cachemgr-hostname=proxy4.tw'
'--enable-cache-digests'
'--enable-default-err-language=Traditional_Chinese'
'--enable-err-languages=Traditional_Chinese'
'--enable-poll'
'--disable-ident-lookups'
'--disable-internal-dns'
'--disable-hostname-checks'
'--enable-underscores'
'--enable-stacktraces'
'--enable-snmp'
'CFLAGS=-O2 -mcpu=pentium4 -march=pentium4 -mmmx -msse3 -m3dnow'
#squidclient mgr:info
HTTP/1.0 200 OK
Server: squid/2.6.STABLE18
Date: Wed, 05 Mar 2008 03:11:22 GMT
Content-Type: text/plain
Expires: Wed, 05 Mar 2008 03:11:22 GMT
Last-Modified: Wed, 05 Mar 2008 03:11:22 GMT
X-Cache: MISS from proxy4.tw
X-Cache-Lookup: MISS from proxy4.tw:8080
Via: 1.0 proxy4.tw:8080 (squid/2.6.STABLE18)
Proxy-Connection: close
Squid Object Cache: Version 2.6.STABLE18
Start Time: Wed, 05 Mar 2008 02:12:49 GMT
Current Time: Wed, 05 Mar 2008 03:11:22 GMT
Connection information for squid:
Number of clients accessing cache: 845
Number of HTTP requests received: 437974
Number of ICP messages received: 0
Number of ICP messages sent: 0
Number of queued ICP replies: 0
Request failure ratio: 0.00
Average HTTP requests per minute since start: 7480.9
Average ICP messages per minute since start: 0.0
Select loop called: 3341104 times, 1.051 ms avg
Cache information for squid:
Request Hit Ratios: 5min: 27.0%, 60min: 19.7%
Byte Hit Ratios: 5min: 13.2%, 60min: 7.2%
Request Memory Hit Ratios: 5min: 19.0%, 60min: 23.1%
Request Disk Hit Ratios: 5min: 23.3%, 60min: 17.7%
Storage Swap size: 147455723 KB
Storage Mem size: 687156 KB
Mean Object Size: 30.55 KB
Requests given to unlinkd: 0
Median Service Times (seconds) 5 min 60 min:
HTTP Requests (All): 0.01387 0.09736
Cache Misses: 0.06286 0.16775
Cache Hits: 0.00091 0.00379
Near Hits: 0.03066 0.04519
Not-Modified Replies: 0.00000 0.00091
DNS Lookups: 0.00190 0.00372
ICP Queries: 0.00000 0.00000
Resource usage for squid:
UP Time: 3512.725 seconds
CPU Time: 1993.014 seconds
CPU Usage: 56.74%
CPU Usage, 5 minute avg: 88.82%
CPU Usage, 60 minute avg: 56.51%
Process Data Segment Size via sbrk(): 1927696 KB
Maximum Resident Size: 1935028 KB
Page faults with physical i/o: 4
Memory accounted for:
Total accounted: 1087998 KB
memPoolAlloc calls: 80133034
memPoolFree calls: 64600088
File descriptor usage for squid:
Maximum number of file descriptors: 32768
Largest file desc currently in use: 1228
Number of file desc currently in use: 1118
Files queued for open: 0
Available number of file descriptors: 31650
Reserved number of file descriptors: 100
Store Disk files open: 0
IO loop method: poll
Internal Data Structures:
4828174 StoreEntries
40667 StoreEntries with MemObjects
40574 Hot Object Cache Items
4826951 on-disk objects
#squidclient gr:5min | grep client
client_http.requests = 202.585409/sec
client_http.hits = 50.436354/sec
client_http.errors = 0.006667/sec
client_http.kbytes_in = 181.338874/sec
client_http.kbytes_out = 2728.809730/sec
client_http.all_median_svc_time = 0.012346 seconds
client_http.miss_median_svc_time = 0.032412 seconds
client_http.nm_median_svc_time = 0.000000 seconds
client_http.nh_median_svc_time = 0.028993 seconds
client_http.hit_median_svc_time = 0.001017 seconds
cache.log frequently show messages:
EX:
2008/03/05 06:18:10| Starting Squid Cache version 2.6.STABLE18 for
i386-unknown-freebsd6.3...
2008/03/05 06:18:10| Process ID 59372
2008/03/05 06:18:10| With 32768 file descriptors available
2008/03/05 06:18:10| Using poll for the IO loop
2008/03/05 06:18:10| Performing DNS Tests...
2008/03/05 06:18:10| Successful DNS name lookup tests...
2008/03/05 06:18:10| helperOpenServers: Starting 32 'dnsserver' processes
2008/03/05 06:18:10| Unlinkd pipe opened on FD 41
2008/03/05 06:18:10| Swap maxSize 184320000 KB, estimated 5760000 objects
2008/03/05 06:18:10| Target number of buckets: 288000
2008/03/05 06:18:10| Using 524288 Store buckets
2008/03/05 06:18:10| Max Mem size: 1572864 KB
2008/03/05 06:18:10| Max Swap size: 184320000 KB
2008/03/05 06:18:10| Local cache digest enabled; rebuild/rewrite every
3600/3600 sec
2008/03/05 06:18:10| Store logging disabled
2008/03/05 06:18:10| Rebuilding storage in /bcache1 (CLEAN)
2008/03/05 06:18:10| Rebuilding storage in /bcache2 (CLEAN)
2008/03/05 06:18:10| Rebuilding storage in /bcache3 (CLEAN)
2008/03/05 06:18:10| Rebuilding storage in /bcache4 (CLEAN)
2008/03/05 06:18:10| Rebuilding storage in /bcache5 (CLEAN)
......
2008/03/05 06:18:46| Store rebuilding is 2.0% complete
2008/03/05 06:19:19| Store rebuilding is 2.1% complete
2008/03/05 06:19:49| Store rebuilding is 4.1% complete
2008/03/05 06:20:20| Store rebuilding is 6.2% complete
2008/03/05 06:20:49| Store rebuilding is 8.2% complete
2008/03/05 06:38:01| Store rebuilding is 98.1% complete
2008/03/05 06:38:02| Done reading /dcache7 swaplog (205231 entries)
2008/03/05 06:38:03| Done reading /ccache1 swaplog (206124 entries)
2008/03/05 06:38:03| Done reading /dcache4 swaplog (206889 entries)
2008/03/05 06:38:04| Done reading /dcache2 swaplog (207196 entries)
2008/03/05 06:38:05| Done reading /bcache3 swaplog (209643 entries)
2008/03/05 06:38:06| Done reading /dcache3 swaplog (211186 entries)
2008/03/05 06:38:06| Done reading /dcache1 swaplog (213883 entries)
2008/03/05 06:38:06| Finished rebuilding storage from disk.
2008/03/05 06:38:06| 4838833 Entries scanned
2008/03/05 06:38:06| 0 Invalid entries.
2008/03/05 06:38:06| 0 With invalid flags.
2008/03/05 06:38:06| 4838713 Objects loaded.
2008/03/05 06:38:06| 0 Objects expired.
2008/03/05 06:38:06| 0 Objects cancelled.
2008/03/05 06:38:06| 120 Duplicate URLs purged.
2008/03/05 06:38:06| 0 Swapfile clashes avoided.
2008/03/05 06:38:06| Took 1195.8 seconds (4046.3 objects/sec).
2008/03/05 06:38:06| Beginning Validation Procedure
2008/03/05 06:38:06| 262144 Entries Validated so far.
2008/03/05 06:38:06| 524288 Entries Validated so far.
......
2008/03/05 06:38:08| Completed Validation Procedure
2008/03/05 06:38:08| Validated 4838713 Entries
2008/03/05 06:38:08| store_swap_size = 147455350k
2008/03/05 06:38:11| storeLateRelease: released 142 objects
2008/03/05 06:58:34| httpReadReply: Excess data from "GET
http://sugg.search.yahoo.com/sg/
?output=fxjsonp&nresults=10&command=www"
.......
2008/03/05 07:23:51| httpAccept: FD 112: accept failure: (53) Software
caused connection abort
2008/03/05 07:27:02| httpReadReply: Excess data from "GET
http://webcs.msg.yahoo.com/crossdomain.xml"
........
2008/03/05 08:51:10| httpAccept: FD 112: accept failure: (53) Software
caused connection abort
2008/03/05 08:51:10| httpAccept: FD 112: accept failure: (53) Software
caused connection abort
2008/03/05 08:51:10| httpAccept: FD 112: accept failure: (53) Software
caused connection abort
2008/03/05 08:51:10| httpAccept: FD 112: accept failure: (53) Software
caused connection abort
2008/03/05 08:51:10| httpAccept: FD 112: accept failure: (53) Software
caused connection abort
.......
2008/03/05 09:17:07| parseHttpRequest: Unsupported method '^E^ACONNECT'
2008/03/05 09:17:07| clientReadRequest: FD 860 (140.1.144.197:2664) Invalid
Request
2008/03/05 09:19:56| urlParse: Illegal character in hostname
'mlbglobal,.112.2o7.net'
2008/03/05 09:21:00| WARNING: 10 swapin MD5 mismatches
......
2008/03/05 09:35:30| WARNING: All dnsserver processes are busy.
2008/03/05 09:35:30| WARNING: up to 32 pending requests queued
......
2008/03/05 10:05:07| parseHttpRequest: Unsupported method '^E^ACONNECT'
2008/03/05 10:05:07| clientReadRequest: FD 446 (140.1.144.197:3222) Invalid
Request
2008/03/05 10:05:13| WARNING: All dnsserver processes are busy.
2008/03/05 10:05:13| WARNING: up to 50 pending requests queued
2008/03/05 10:05:13| dnsSubmit: queue overload, rejecting l.yimg.com
2008/03/05 10:05:13| dnsSubmit: queue overload, rejecting l.yimg.com
2008/03/05 10:05:13| dnsSubmit: queue overload, rejecting l.yimg.com
2008/03/05 10:05:13| dnsSubmit: queue overload, rejecting l.yimg.com
2008/03/05 10:05:13| dnsSubmit: queue overload, rejecting l.yimg.com
2008/03/05 10:12:45| httpReadReply: Excess data from "GET http://38.114.207.
9/4939beeaad8cea7f780288f9ecbb670d5
FATAL: xcalloc: Unable to allocate 1 blocks of 4108 bytes!
Squid Cache (Version 2.6.STABLE18): Terminated abnormally.
CPU Usage: 3700.403 seconds = 444.883 user + 3255.521 sys
Maximum Resident Size: 2102284 KB
Page faults with physical i/o: 0
2008/03/05 10:12:45| ctx: enter level 0:
'http://www.schprs.edu.tw/images/layout_index_13.gif'
2008/03/05 10:12:45| storeDirWriteCleanLogs: Starting...
2008/03/05 10:12:49| Starting Squid Cache version 2.6.STABLE18 for
i386-unknown-freebsd6.3...
2008/03/05 10:12:49| Process ID 60456
2008/03/05 10:12:49| With 32768 file descriptors available
2008/03/05 10:12:49| Using poll for the IO loop
2008/03/05 10:12:49| Performing DNS Tests...
2008/03/05 10:12:49| Successful DNS name lookup tests...
2008/03/05 10:12:49| helperOpenServers: Starting 32 'dnsserver' processes
2008/03/05 10:12:49| Unlinkd pipe opened on FD 41
2008/03/05 10:12:49| Swap maxSize 184320000 KB, estimated 5760000 objects
2008/03/05 10:12:49| Target number of buckets: 288000
2008/03/05 10:12:49| Using 524288 Store buckets
2008/03/05 10:12:49| Max Mem size: 1572864 KB
2008/03/05 10:12:49| Max Swap size: 184320000 KB
2008/03/05 10:12:49| Local cache digest enabled; rebuild/rewrite every
3600/3600 sec
2008/03/05 10:12:49| Store logging disabled
2008/03/05 10:12:49| Rebuilding storage in /bcache1 (DIRTY)
2008/03/05 10:12:49| Rebuilding storage in /bcache2 (DIRTY)
2008/03/05 10:12:49| Rebuilding storage in /bcache3 (DIRTY)
........
2008/03/05 10:37:22| httpReadReply: Excess data from "GET http://pic.wretch.
cc/icon/blog/melinda/20050607/comme
2008/03/05 10:37:22| 1048576 Entries Validated so far.
2008/03/05 10:37:23| 1310720 Entries Validated so far.
2008/03/05 10:37:23| 1572864 Entries Validated so far.
2008/03/05 10:37:23| 1835008 Entries Validated so far.
2008/03/05 10:37:23| 2097152 Entries Validated so far.
2008/03/05 10:37:24| 2359296 Entries Validated so far.
2008/03/05 10:37:24| 2621440 Entries Validated so far.
2008/03/05 10:37:24| 2883584 Entries Validated so far.
2008/03/05 10:37:25| 3145728 Entries Validated so far.
2008/03/05 10:37:25| 3407872 Entries Validated so far.
2008/03/05 10:37:25| 3670016 Entries Validated so far.
2008/03/05 10:37:26| 3932160 Entries Validated so far.
2008/03/05 10:37:26| 4194304 Entries Validated so far.
2008/03/05 10:37:26| 4456448 Entries Validated so far.
2008/03/05 10:37:26| 4718592 Entries Validated so far.
2008/03/05 10:37:26| httpAccept: FD 112: accept failure: (53) Software
caused connection abort
2008/03/05 10:37:27| httpAccept: FD 112: accept failure: (53) Software
caused connection abort
2008/03/05 10:37:27| Completed Validation Procedure
2008/03/05 10:37:27| Validated 4794164 Entries
2008/03/05 10:37:27| store_swap_size = 147191853k
squid is always restart
cache.log show messages
FATAL: xmalloc: Unable to allocate 65535 bytes!
or
FATAL: xcalloc: Unable to allocate 1 blocks of 4108 bytes!
Any suggestion?!?!
tanx
--Received on Tue Mar 04 2008 - 20:51:49 MST
This archive was generated by hypermail pre-2.1.9 : Tue Apr 01 2008 - 13:00:04 MDT
