Date: Sat, 29 Jan 2005 02:41:55 -0800 From: "Lucky Green" <shamrock@cypherpunks.to> To: <freebsd-questions@freebsd.org> Subject: Seeking performance tuning pointers/tracking down GIANT Message-ID: <20050129104212.7CAB217030@mail.cypherpunks.to>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I read man tuning and did some goggling. Yet questions remain. System: Dual processor Intel PentiumPro motherboard. FreeBSD 5.3 SMP kernel. fxp 100baseT NIC. I am managing a system that is running tor, a fairly network intensive service. See http://tor.eff.org The service processes about 7Mbps symmetric traffic sustained. "top" shows about 33% CPU idle. There is plenty of inactive/free RAM. While server throughput grew steadily over time, throughput appears to have hit a ceiling at between 7 and 8 Mbps. The bottleneck is not upstream from the server. I am trying to track down the bottleneck inside the server that is establishing this ceiling. I played around with various sysctl variables, but to no effect. One thing that I do notice is that the main tor process tends to spend a fair amount of time in GIANT. Does perhaps one of the readers of this list have any suggestions how to determine where the bottleneck may be found and if so how to remove it? Thanks, - --Luck Content-Type: text/plain ________________________________________________________________ This email was not PGP encrypted. My next email to you could be PGP encrypted, if you click on to the URL below: https://keys.cypherpunks.to/b/b.e?r=freebsd-questions%40freebsd.com&n=hFP433Ce%2FD7ivfZPVmDksg%3D%3D -----BEGIN PGP SIGNATURE----- Version: 1537 iQIVAwUBQftodwRVjUj9NCi0AQIj1RAAwhWTaeGc/XBossmqvfyWac3LqEDqJF3r MhC660n+ixh5Bc4ajOuOY4402YSLhdzkMY9dU5rJvONW3LnXikDQiPE40QCCaxNn euwKIVMI7E+IeqCn2cx+br7ZQEkEF6JT4kJXmvi142TWNrKyuV/2GDky3I4hj068 la+8J+Xp6toOB5FemlUs7oMApZkcqnA1ixNO/nrNXoke2NaZu+sxjWTelVOv5r8T ewuOgUL+uWvJ+cyGR6heXgsgynVoeVBm+rkv7LrEGS9WJPQJI72u46pYFFlQfDFz X96qiJALHTky8ey/+e/jB2+LUoq3e3UsxKPN+dJ7JuddasvkfciOJ4/ry6se1/Jv 0YQQeNu7Z7c2qomk7SOs66AQYlCiwXJc3AfQl7wKTYSTwaXSNBkbeq6j8+gTeWQx p5JZmu4cmkK5YN4wMxpWhNAdcUryHlCCpVNj6cPjPNqnQsdXfIhpT9qlnS4OjcPd ne8ZbD3e+uEyvoQJHwo+XQ8UNkYww31U95aOlNcirVgGhe7vtKxULp2tHMebk271 Ift0KGTWAnJBIO0EFfonekzLaTiEparv32rgFHI//hMksdkfv9qRNYaMYFcOgvqg 96dWZ0czd6MeQaLzRU8642keDHXiq5znXnOcUyNhRt45C30cFrKm0mgu0fqq3SV8 QIsAS69/Sbg= =I6BX -----END PGP SIGNATURE-----
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