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Load Balancer performance issues, fxfeeds.mozilla.org & versioncheck

I mentioned briefly in Monday’s meeting the performance issues we’re having with our load balancers.  Since then, we’ve been hustling to turn up something in the short term to handle Thursday’s Major...

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Uptime

I’m fairly conservative when it comes to upgrading switches. I generally only upgrade to pick up security fixes. It’s rare that I’ll upgrade just to stay current. Tonight’s one of those rare...

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Switch IOS Upgrade Post-Mortem

Last night Derek attempted to upgrade IOS on core1 & core2 to pickup software support for Cisco’s ACE module. We ran into several issues and postponed the upgrade on core2 until those issues are...

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Level3, post BGP turn up

Derek turned up BGP peering with Level3 this morning out of San Jose (this was supposed to be part of last night’s maintenance but he ran into turn up problems on Level3′s side). We’ve grown...

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More traffic analysis with NetFlow

I’ve been working on a couple capacity planning projects and have been knee deep in bandwidth metrics. That, combined with turning up Level3 yesterday got me looking more into where that bandwidth is...

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Fx 3.0.7 release & this morning’s network performance issues

In computers systems (and with others) there are often bottlenecks and removing those often reveals new ones. Today’s an example of just that. During a normal release we have tools we can use to adjust...

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Where in the world is AMO? (Part VI: We did it again!)

(See Part V.) I have a confession.  We secretly did something last night (we only barely announced it to Metrics). No, we didn’t secretly replace the fine coffee at some four-star restaurant but pretty...

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Geolocation & Zeus ZXTM 6.0

Mozilla’s North American store has been down in maintenance mode (you can read about the why) but not the International Store. The old store used to redirect non-North American users to the...

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Phoenix to San Jose, in 18ms

[root@ip-ns01 ~]# mtr www.mozilla.com --report ip-ns01.phx.mozilla.org Snt: 10 Loss% Last Avg Best Wrst StDev 10.8.75.1 0.0% 0.4 0.4 0.4 0.4 0.0 v500.core1.phx.mozilla.net 0.0% 1.1 1.3 1.0 3.1 0.6...

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World IPv6 Day, Chickens, Eggs & Mozilla

Mozilla has a long history of being a technology leader on the web and open standards. A short, and certainly not exhaustive, list includes: Firefox (of course) HTML5 Geolocation Do Not Track...

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