Network performance checklist: TSO/LSO

Took me good few hours to find out why specific combination of task performs incredibly slowly on my server.

For reference, in my case it’s port-forwarded ssh/https connection over openvpn.

[ Client ] --(Internet)--> [ Gateway ] --(OpenVPN)--> [ Server (SSH) ]

Doing anything which takes up bandwidth (displaying log files, etc) will shoot the cpu load (at interrupt) up by a lot. By a lot I mean over 50% of one core.

This guy have the reasoning why it’s happening but I don’t know how much of it is correct. VMware support page also suggesting disabling it if network performance is slow.

In FreeBSD it’s:

echo 'net.inet.tcp.tso=0' >> /etc/sysctl.conf

In Windows it’s this .reg file:

Windows Registry Editor Version 5.00


It seems to involve a shell script in Linux so I won’t bother writing it off here since it differs by system.

As usual, YMMV.

…and there goes my time 🙁

Amaburi OP Single

Not doing a release because it’s already released by many other groups.

2014-10-26 22.24.52

On related news, there isn’t any other outstanding opening/ending themes this season so far.

Here my current “considering” list:

  • F/sn UBW ED
  • OreTwi OP
  • OreTwi ED
  • Tsukame Pride
  • Wixoss 2 OP
  • Cross Ange OP


A few years ago I wrote a php script to provide better autoindex within nginx. I used it for quite a long period until I rewrote it in Ruby/Sinatra. But then I figured the setup for it is overly complicated just for simple task. And takes additional memory. I always have php-fpm running anyway so it’s free.

And so I decided to take up the old php script and fix it up. Unfortunately there isn’t other language as easy to setup for web as php which is why I fixed it instead of rewriting in some other languages (or keeping it ruby). The “fixed” version is still pretty much imperative-style but hey, it works.

Only tested with nginx.

Few weeks with Firefox

  • crashes every 1-2 days
  • slow
  • fail on loading large images which for some reason don’t happen on others’ Firefox. I think my Firefox is cursed or something
  • modal authentication in 2014
  • oh and it crashes again when I’m writing this post. Thankfully I’m doing this in Chrome


[Lyrics] Hare Nochi Kitto Nanohana Biyori Theme Song – I will (short ver.)

Here be the lyrics for Parasol’s latest game to be released this month – Hare Nochi Kitto Nanohana Biyori (NSFW, also the link below). Full version here.

I will (by solfa feat. Chata)

あぁ 透明な一秒が 流れてゆく
aa toumei na ichibyou ga nagarete yuku

たゆたう 思い出と 少しだけまどろむ日々
tayutau omoide to sukoshi dake madoromu hibi

紡いだ 言の葉 風に舞い上がれ
tsumuida kotonoha kaze ni maiagare

天まで届けと 呟き祈る
ten made todoke to tsubuyaki inoru

咲き誇る 綺麗な花 色とりどり 鮮やかな光景
sakihokoru kirei na hana irotoridori azayaka na koukei

いつも 気がつけば 聴こえてくる 懐かしいメロディ
itsumo ki ga tsukeba kikoetekuru natsukashii merodi

繋いだ手 交わす誓い その想いは 繰り返すメモリー
tsunaida te kawasu chikai sono omoi wa kurikaesu memorii

いつか また出会う 運命の輪 途切れることなく 回る
itsuka mata deau unmei no wa togirerukotonaku mawaru

Wasting time / 2048

2014-05-24 03.43.52

I’ve been wasting time on this thing called 2048 lately. And finally obtained my then-current goal of 8192. And then ended at 112k score since I wasn’t careful enough.

Next goal is 16384 but I’ll need to be able to reach 8192 without too much effort first…