Date: Mon, 19 Nov 2007 18:12:26 +0300 From: Alexey Popov <lol@chistydom.ru> To: Ivan Voras <ivoras@freebsd.org> Cc: freebsd-stable@freebsd.org Subject: Re: 2 x quad-core system is slower that 2 x dual core on FreeBSD Message-ID: <4741A7DA.2050706@chistydom.ru> In-Reply-To: <fhs7hp$2es$2@ger.gmane.org> References: <4741905E.8050300@chistydom.ru> <fhs3s5$knj$1@ger.gmane.org> <47419AB3.5030008@chistydom.ru> <fhs7hp$2es$2@ger.gmane.org>
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This is a multi-part message in MIME format. --------------020408070004010709000809 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi. Ivan Voras wrote: >> CPU states: 9.5% user, 0.0% nice, 82.0% system, 0.5% interrupt, 8.0% >> idle > A wild idea that might not help: try reducing kern.hz in loader.conf to > something like 100 and see if something significant changes. Now it runs with hz=100, number of context switches became ~ 2 times less, but still there's 90% system CPU load (see attach). With best regards, Alexey Popov --------------020408070004010709000809 Content-Type: text/plain; name="vmstat.txt" Content-Transfer-Encoding: base64 Content-Disposition: inline; filename="vmstat.txt" ICAgIDEgdXNlcnMgICAgTG9hZCAxNi4zNiAxMi4yNCAgNi4xNCAgICAgICAgICAgICAgICAg IE5vdiAxOSAxODowOAoKTWVtOktCICAgIFJFQUwgICAgICAgICAgICBWSVJUVUFMICAgICAg ICAgICAgICAgICAgICAgICBWTiBQQUdFUiAgIFNXQVAgUEFHRVIKICAgICAgICBUb3QgICBT aGFyZSAgICAgIFRvdCAgICBTaGFyZSAgICBGcmVlICAgICAgICAgICBpbiAgIG91dCAgICAg aW4gICBvdXQKQWN0ICAzNjY5ODggICAxNjk1MiAgIDgzNDI4OCAgICAzNzI0OCAzNTE1NjI0 ICBjb3VudCAgICAgMQpBbGwgIDQyMzIyOCAgIDE4NDcyICA1MDg5NTY4ICAgIDQxMTQ0ICAg ICAgICAgIHBhZ2VzICAgICA0ClByb2M6ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgSW50ZXJydXB0cwogIHIgICBwICAgZCAg IHMgICB3ICAgQ3N3ICBUcnAgIFN5cyAgSW50ICBTb2YgIEZsdCAgICAgIDEgY293ICAgIDM5 MTcgdG90YWwKIDMxICAgICAgICAgIDI0ICAgICAgIDk4ayAgMzVrICA5NWsgMjMxNSAgMTAw ICAyOWsgIDI5OTE5IHpmb2QgICAgICAgIHNpbzAgaXJxNAogICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgb3pmb2QgICAgICAgYXRh MCBpcnExNAo0OC42JVN5cyAgIDEuMCVJbnRyIDQ5LjUlVXNlciAgMC4wJU5pY2UgIDEuMCVJ ZGxlICAgICAgICAlb3pmb2QgICAgIDUgbWZpMCBpcnExOAp8ICAgIHwgICAgfCAgICB8ICAg IHwgICAgfCAgICB8ICAgIHwgICAgfCAgICB8ICAgIHwgICAgICAgZGFlZnIgICAgICAgdWhj aTAgdWhjaQo9PT09PT09PT09PT09PT09PT09PT09PT0rPj4+Pj4+Pj4+Pj4+Pj4+Pj4+Pj4+ Pj4+PiAgIDE3MDkgcHJjZnIgICAyMDAgY3B1MDogdGltZQogICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgIDQgZHRidWYgICAgMjMxNDAgdG90ZnIgIDIzMTEgZW0w IGlycTI1NgpOYW1laSAgICAgTmFtZS1jYWNoZSAgIERpci1jYWNoZSAgICAxMDAwMDAgZGVz dm4gICAgICAgICAgcmVhY3QgICAyMDAgY3B1MjogdGltZQogICBDYWxscyAgICBoaXRzICAg JSAgICBoaXRzICAgJSAgICAgIDE0OTQgbnVtdm4gICAgICAgICAgcGR3YWsgICAyMDAgY3B1 MzogdGltZQogIDE0NzUxNyAgMTQ3NTE0IDEwMCAgICAgICAgICAgICAgICAgICAxNTggZnJl dm4gICAgICAgICAgcGRwZ3MgICAyMDAgY3B1MTogdGltZQogICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgaW50cm4gICAyMDAgY3B1 NDogdGltZQpEaXNrcyBtZmlkMCAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAxMDY4NDAgd2lyZSAgICAyMDAgY3B1NzogdGltZQpLQi90ICAyMC4yMCAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAzNTU3MjAgYWN0ICAgICAyMDEgY3B1 NTogdGltZQp0cHMgICAgICAgNSAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgMjEyNDggaW5hY3QgICAyMDAgY3B1NjogdGltZQpNQi9zICAgMC4xMCAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIDEyMjggY2FjaGUKJWJ1c3kgICAg IDEgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAzNTE0NzkyIGZyZWUK ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIDY1 MDU2IGJ1ZgoKCgoKCg== --------------020408070004010709000809--
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