Date: Tue, 04 Nov 1997 00:20:02 -0800 (PST) From: Simon Shapiro <Shimon@i-Connect.Net> To: "Jordan K. Hubbard" <jkh@time.cdrom.com>, freebsd-current@freebsd.org, cunning@dpt.com Subject: Make World Times Message-ID: <XFMail.971104002002.Shimon@i-Connect.Net>
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Those of us who like I/O systems, here are some interesting statistics: Total time to build (from fresh install, cd /usr/src;make world): 1h42m. Disk I/O statistics: 52,482 READs, 732,036 WRITEs. Fastest READ 277us, fastest WRITE 119us Slowest READ 298ms, slowest WRITE 534ms Interrupts: 734,124 with latency of 12us - 10.1ms [ Block size:count:slowest:fastest ] READ by size: 512:55:239:20812 1K:16101:0:152596 2K:4072:0:60314 4K:6452:0:140111 8K:9682:0:149361 16K:2014:0:114036 32K:738:2027:115111 64K:741:0:131711 OTHER:12627:0:298174 WRITE by size: 512:0:-1879048193:0 1K:226294:0:480577 2K:27149:0:466115 4K:14057:0:291831 8K:408962:0:525764 16K:1486:0:291242 32K:721:0:348073 64K:3222:0:274109 OTHER:50145:0:534880 Just as interesting are the queue management statistics: Waiting Queue (commands ready to go to HBA but cannot): High Mark: 72 Shortest stay: 7us Longest Stay: 149.5ms Submit Queue (command on the HBA): High Mark: 64 (controller firmware MAX) Shortest stay: 35us Longest Stay: 534.9ms Complete Queue (HBA Done, waiting to callback): High Mark: 14 (controller firmware MAX) Shortest stay: 11us Longest Stay: 10.5ms Firmware Corner No port collisions (command to be submited collides with interrupt service) 19 busy command port (did not become ready in 0.5 second Longest Wait was 0.486 second These indicate a prblem in the firmware I am using. --- If Microsoft Built Cars: Every time they repainted the lines on the road, you'd have to buy a new car. Sincerely Yours, Simon Shapiro Atlas Telecom Senior Architect 14355 SW Allen Blvd., Suite 130 Beaverton OR 97005 Shimon@i-Connect.Net Voice: 503.799.2313
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