Saudações,
Alguém tem sugestões ou dicas para resolver o problema de alto consumo de CPU pelo squid no FreeBSD 5.4? Trata-se de um proxy webcache transparente, implementado com o pf e protocolo WCCP (Cisco).
Dados relevantes:
Hardware: P4 2.80GHz HT / 2GB RAM / (2x)80GB HDD / Intel PRO/1000 (em0)
----------------------
CPU: Intel(R) Pentium(R) 4 CPU 2.80GHz (2793.01-MHz 686-class CPU)
Hyperthreading: 2 logical CPUs
real memory = 2146631680 (2047 MB)
avail memory = 2094350336 (1997 MB)
cpu0: <ACPI CPU> on acpi0
agp0: <Intel 82865 host to AGP bridge> mem 0xf8000000-0xfbffffff at device 0.0 on pci0
em0: <Intel(R) PRO/1000 Network Connection, Version - 1.7.35> port 0xcf80-0xcf9f mem
0xfe9e0000-0xfe9fffff irq 18 at device 1.0 on pci2
em0: Link is up 100 Mbps Full Duplex
ad0: 76319MB <ST380011A/3.06> [155061/16/63] at ata0-master UDMA100
ad1: 76319MB <ST380011A/3.06> [155061/16/63] at ata0-slave UDMA100
-----------//----------------------//----------------------//-----------
Software: FreeBSD 5.4-PRERELEASE, squid 2.5.9, pf
Outras informações: ------------------
# top -S
--------
last pid: 20950; load averages: 0.88, 0.99, 0.96 up 1+01:36:07 12:11:52
101 processes: 3 running, 65 sleeping, 33 waiting
CPU states: 34.5% user, 0.0% nice, 51.6% system, 7.0% interrupt, 7.0% idle
Mem: 210M Active, 1544M Inact, 180M Wired, 66M Cache, 112M Buf, 3008K Free
Swap: 4069M Total, 120K Used, 4069M Free
PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND
3134 squid 122 0 193M 190M RUN 211:17 84.03% 84.03% squid
11 root 171 52 0K 8K RUN 934:47 6.98% 6.98% idle
35 root -44 -163 0K 8K WAIT 26:04 2.83% 2.83% swi1: net
28 root -68 -187 0K 8K WAIT 14:05 1.03% 1.03% irq18: em0 uhci2
36 root -28 -147 0K 8K WAIT 2:24 0.00% 0.00% swi5: clock sio
3136 squid -4 0 1744K 1076K msgwai 2:07 0.00% 0.00% diskd
56 root 20 0 0K 8K syncer 2:00 0.00% 0.00% syncer
-----------//----------------------//----------------------//-----------
# systat -vmstat 1 ------------------ 3 users Load 1.15 1.00 0.95 Apr 6 12:18
Mem:KB REAL VIRTUAL VN PAGER SWAP PAGER
Tot Share Tot Share Free in out in out
Act 209444 4416 261896 6540 82364 count
All 2045952 7132 4500392 10168 pages
Interrupts
Proc:r p d s w Csw Trp Sys Int Sof Flt cow 1515 total
1 4 32 3680 730 5051 2944 1139 183612 wire 1: atkb
215036 act 3: sio1
52.2%Sys 3.7%Intr 28.4%User 0.0%Nice 15.7%Idl 1569204 inact 4: sio0
| | | | | | | | | | 79356 cache 6: fdc0
==========================++>>>>>>>>>>>>>> 3008 free 128 8: rtc
daefr 13: npx
Namei Name-cache Dir-cache prcfr 14: ata
Calls hits % hits % react 15: ata
47 37 79 pdwak 1288 18: em0
zfod pdpgs 99 0: clk
Disks ad0 ad1 ofod intrn
KB/t 0.00 0.00 %slo-z 114880 buf
tps 0 0 1657 tfree 120 dirtybuf
MB/s 0.00 0.00 100000 desiredvnodes
% busy 0 0 90535 numvnodes
9789 freevnodes
-----------//----------------------//----------------------//-----------
# netstat -mb ------------- 1188 mbufs in use 1161/32768 mbuf clusters in use (current/max) 0/3/4608 sfbufs in use (current/peak/max) 2619 KBytes allocated to network 0 requests for sfbufs denied 0 requests for sfbufs delayed 0 requests for I/O initiated by sendfile 214 calls to protocol drain routines -----------//----------------------//-----------
# vmstat -i ----------- interrupt total rate irq1: atkbd0 2129 0 irq3: sio1 2 0 irq4: sio0 2 0 irq6: fdc0 14 0 irq8: rtc 11852670 127 irq13: npx0 1 0 irq14: ata0 1145295 12 irq15: ata1 58 0 irq18: em0 uhci2 75076124 810 irq0: clk 9260481 99 Total 97336776 1051 -----------//----------------------//-----------
# iostat
--------
tty ad0 ad1 cpu
tin tout KB/t tps MB/s KB/t tps MB/s us ni sy in id
0 196 15.53 4 0.06 18.19 8 0.14 15 0 22 3 61
-----------//----------------------//-----------
Obrigado antecipadamente,
Alex
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