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yesterdaysunV2EX 第 145085 号会员，加入于 2015-10-30 14:03:58 +08:00今日活跃度排名 11462 |
yesterdaysun 最近回复了
7 天前 回复了 leia 创建的主题 › 程序员 › 20 种数组去重的方法 |
为什么前面几个是 n^2, 不应该是 nlogn 么, 还有后面的单 for 循环, 为什么是 n, 因为使用了 object hash 就不算复杂度了?
同意, 我经常用这个题目, 实际情况是 10 个有 9 个只能到双重循环, 剩下一个能进一步到使用集合之类的数据结构.
大多数人对算法复杂度都没有概念, 经常提出一些奇奇怪怪的优化方案, 比如使用 Steam 流, 用 ForEach, 两个列表先排序等等, 当然这里是小公司, 对于大厂人员, 素质想来会高一点吧
大多数人对算法复杂度都没有概念, 经常提出一些奇奇怪怪的优化方案, 比如使用 Steam 流, 用 ForEach, 两个列表先排序等等, 当然这里是小公司, 对于大厂人员, 素质想来会高一点吧
315 天前 回复了 yesterdaysun 创建的主题 › Java › RocketMQ 拉取消费过滤条件的问题 |
@Scarb 好像有点理解了, 所有的消息会广播给所有的消费组, 但是组内会直接拉取全部并过滤, 所以如果我想要的是一部分消费 t1, 一部分消费 t2, 搞两个消费组就行, 我之前以为消息只回传一次, 一边消费完了就没有了, 其实如果新建消费组订阅的话, 消费位点会从 0 开始, 这样理解对吧
315 天前 回复了 yesterdaysun 创建的主题 › Java › RocketMQ 拉取消费过滤条件的问题 |
@onepunch 我就是按文档写的呀, 按我的理解, 我生产了一条 tag=t1 的消息, 然后我订阅 tag=t2 的消息, 这个消息不应该被消费者收到, 我也确实没有收到, 但是这条消息同时也应该留在队列里面, 不应该是被消费的状态, 但是我这里确实显示被消费了, 所以百思不得其解
316 天前 回复了 zurmokeeper 创建的主题 › 程序员 › 请问有什么开源的项目支持导出加密的 xls 文件吗？或者微软官方加解密文档提供？ |
https://stackoverflow.com/questions/8817290/create-a-password-protected-excel-file-using-apache-poi
这里提到一个商业库 ExtenXLS 好像可以, 考虑吗?
这里提到一个商业库 ExtenXLS 好像可以, 考虑吗?
316 天前 回复了 zurmokeeper 创建的主题 › 程序员 › 请问有什么开源的项目支持导出加密的 xls 文件吗？或者微软官方加解密文档提供？ |
318 天前 回复了 yesterdaysun 创建的主题 › MacBook Pro › MacBookPro 半夜耗光电池要怎么排查原因? |
经过几天研究, 可能搞定了, 主要还是靠 pmset -g log 分析日志, 看 WakeRequest 都是些什么东西
一开始是 CSPNEvaluation, 反正是跟 PowerNap 有关的, 想办法改配置文件禁用掉了, 不行
后来是一些 Scheduled power events, 用 sudo pmset schedule cancelall 全部取消掉, 还是不行
再后来发现第二天所有的计划任务又重新冒出来了, google 之后, 先全部 cancel 掉, 然后 sudo chflags schg /Library/Preferences/SystemConfiguration/com.apple.AutoWake.plist 把配置文件设为只读, 貌似可以了
现在过去 2 天都没有半夜耗电的毛病了, 感觉差不多应该是好了, 真是艰难啊
一开始是 CSPNEvaluation, 反正是跟 PowerNap 有关的, 想办法改配置文件禁用掉了, 不行
后来是一些 Scheduled power events, 用 sudo pmset schedule cancelall 全部取消掉, 还是不行
再后来发现第二天所有的计划任务又重新冒出来了, google 之后, 先全部 cancel 掉, 然后 sudo chflags schg /Library/Preferences/SystemConfiguration/com.apple.AutoWake.plist 把配置文件设为只读, 貌似可以了
现在过去 2 天都没有半夜耗电的毛病了, 感觉差不多应该是好了, 真是艰难啊
323 天前 回复了 yesterdaysun 创建的主题 › MacBook Pro › MacBookPro 半夜耗光电池要怎么排查原因? |
昨天晚上观察了一下, 问题依旧, 早上起来只剩 50%电, 观察活动监视器的能耗没有结论, 因为这个就像是普通的唤醒电脑的样子, 都是一些正常的 APP 的待机能耗使用, 整个看上去就像是半夜 2 点电脑被唤醒打开, 然后 APP 正常待机工作的感觉, 但是实际上是全程不插电, 没有任何外接, 合盖的情况下发生的, 完全搞不懂了, 看日志的话, 只能看到是 0 点的时候进入睡眠, 但是只计划睡眠 2 个小时, 然后两个小时后 DarkWake from Deep Idle, 时间是 6 小时, 反正搞不懂这些计划安排是怎么来的, 头大
2024-07-18 00:15:12 +0800 Sleep Entering Sleep state due to 'Maintenance Sleep':TCPKeepAlive=disabled Using Batt (Charge:97%) 6422 secs
2024-07-18 00:15:14 +0800 Wake Requests [*process=powerd request=CSPNEvaluation deltaSecs=6459 wakeAt=2024-07-18 02:02:53] [process=powerd request=UserWake deltaSecs=23163 wakeAt=2024-07-18 06:41:17 info="com.apple.alarm.user-invisible-com.apple.calaccessd.travelEngine.periodicRefreshTimer,480"]
2024-07-18 00:15:14 +0800 PM Client Acks Delays to Sleep notifications: [com.apple.bluetooth.sleep is slow(1555 ms)] [com.apple.apsd is slow(2025 ms)]
2024-07-18 02:02:13 +0800 Assertions PID 128(powerd) Created InternalPreventSleep "Holding in darkwake for up to 20 seconds to query model for inactivity prediction" 00:00:00 id:0x0xd0000972d [System: DeclUser SRPrevSleep kCPU kDisp]
2024-07-18 02:02:13 +0800 Assertions PID 128(powerd) Released InternalPreventSleep "Holding in darkwake for up to 20 seconds to query model for inactivity prediction" 00:00:00 id:0x0xd0000972d [System: DeclUser kDisp]
2024-07-18 02:02:13 +0800 Assertions PID 318(mDNSResponder) Created MaintenanceWake "mDNSResponder:maintenance" 00:00:00 id:0x0xd0000972f [System: DeclUser kDisp]
2024-07-18 02:02:13 +0800 Assertions PID 318(mDNSResponder) Released MaintenanceWake "mDNSResponder:maintenance" 00:00:00 id:0x0xd0000972f [System: DeclUser kDisp]
2024-07-18 02:02:14 +0800 DarkWake DarkWake from Deep Idle [CDN] : due to EC.SleepTimer/SleepTimer Using BATT (Charge:97%) 21039 secs
2024-07-18 02:02:14 +0800 HibernateStats hibmode=3 standbydelaylow=10800 standbydelayhigh=86400 1704
2024-07-18 02:02:14 +0800 WakeTime WakeTime: 1.516 sec
2024-07-18 02:02:15 +0800 Kernel Client Acks Delays to Sleep notifications: [AppleIntelFramebuffer driver is slow(msg: SetState to 1)(988 ms)] [powerd is slow(17629 ms)] [UPSB driver is slow(msg: SetState to 2)(936 ms)] [UPSB driver is slow(msg: SetState to 2)(935 ms)] [AppleHPMIECS driver is slow(msg: WillChangeState to 2)(1094 ms)] [AppleHPMIECS driver is slow(msg: WillChangeState to 2)(1097 ms)] [AppleUSBVHCIBCE driver is slow(msg: SetState to 1)(318 ms)] [RP01 driver is slow(msg: SetState to 0)(1009 ms)]
2024-07-18 02:02:15 +0800 Kernel Client Acks Delays to Wake notifications: [RP17 driver is slow(msg: SetState to 2)(316 ms)] [UPSB driver is slow(msg: SetState to 2)(948 ms)] [UPSB driver is slow(msg: SetState to 2)(948 ms)] [ADIO driver is slow(msg: SetState to 2)(627 ms)] [ATY,Boa driver is slow(msg: SetState to 1)(366 ms)] [UPSB driver is slow(msg: SetState to 2)(942 ms)] [UPSB driver is slow(msg: SetState to 2)(962 ms)] [AppleHPMIECS driver is slow(msg: WillChangeState to 2)(1113 ms)] [AppleHPMIECS driver is slow(msg: WillChangeState to 2)(1118 ms)] [AppleIntelFramebuffer driver is slow(msg: SetState to 0)(352 ms)] [ATY,Boa driver is slow(msg: SetState to 0)(344 ms)] [AppleUSBVHCIBCE driver is slow(msg: SetState to 1)(324 ms)] [RP01 driver is slow(msg: SetState to 0)(1015 ms)] [RP17 driver is slow(msg: SetState to 2)(313 ms)] [UPSB driver is slow(msg: SetState to 2)(941 ms)] [UPSB driver is slow(msg: SetState to 2)(941 ms)] [ADIO driver is slow(msg: SetState to 2)(620 ms)] [ATY,Boa driver is slow(msg: SetState to 1)(371 ms)]
2024-07-18 00:15:12 +0800 Sleep Entering Sleep state due to 'Maintenance Sleep':TCPKeepAlive=disabled Using Batt (Charge:97%) 6422 secs
2024-07-18 00:15:14 +0800 Wake Requests [*process=powerd request=CSPNEvaluation deltaSecs=6459 wakeAt=2024-07-18 02:02:53] [process=powerd request=UserWake deltaSecs=23163 wakeAt=2024-07-18 06:41:17 info="com.apple.alarm.user-invisible-com.apple.calaccessd.travelEngine.periodicRefreshTimer,480"]
2024-07-18 00:15:14 +0800 PM Client Acks Delays to Sleep notifications: [com.apple.bluetooth.sleep is slow(1555 ms)] [com.apple.apsd is slow(2025 ms)]
2024-07-18 02:02:13 +0800 Assertions PID 128(powerd) Created InternalPreventSleep "Holding in darkwake for up to 20 seconds to query model for inactivity prediction" 00:00:00 id:0x0xd0000972d [System: DeclUser SRPrevSleep kCPU kDisp]
2024-07-18 02:02:13 +0800 Assertions PID 128(powerd) Released InternalPreventSleep "Holding in darkwake for up to 20 seconds to query model for inactivity prediction" 00:00:00 id:0x0xd0000972d [System: DeclUser kDisp]
2024-07-18 02:02:13 +0800 Assertions PID 318(mDNSResponder) Created MaintenanceWake "mDNSResponder:maintenance" 00:00:00 id:0x0xd0000972f [System: DeclUser kDisp]
2024-07-18 02:02:13 +0800 Assertions PID 318(mDNSResponder) Released MaintenanceWake "mDNSResponder:maintenance" 00:00:00 id:0x0xd0000972f [System: DeclUser kDisp]
2024-07-18 02:02:14 +0800 DarkWake DarkWake from Deep Idle [CDN] : due to EC.SleepTimer/SleepTimer Using BATT (Charge:97%) 21039 secs
2024-07-18 02:02:14 +0800 HibernateStats hibmode=3 standbydelaylow=10800 standbydelayhigh=86400 1704
2024-07-18 02:02:14 +0800 WakeTime WakeTime: 1.516 sec
2024-07-18 02:02:15 +0800 Kernel Client Acks Delays to Sleep notifications: [AppleIntelFramebuffer driver is slow(msg: SetState to 1)(988 ms)] [powerd is slow(17629 ms)] [UPSB driver is slow(msg: SetState to 2)(936 ms)] [UPSB driver is slow(msg: SetState to 2)(935 ms)] [AppleHPMIECS driver is slow(msg: WillChangeState to 2)(1094 ms)] [AppleHPMIECS driver is slow(msg: WillChangeState to 2)(1097 ms)] [AppleUSBVHCIBCE driver is slow(msg: SetState to 1)(318 ms)] [RP01 driver is slow(msg: SetState to 0)(1009 ms)]
2024-07-18 02:02:15 +0800 Kernel Client Acks Delays to Wake notifications: [RP17 driver is slow(msg: SetState to 2)(316 ms)] [UPSB driver is slow(msg: SetState to 2)(948 ms)] [UPSB driver is slow(msg: SetState to 2)(948 ms)] [ADIO driver is slow(msg: SetState to 2)(627 ms)] [ATY,Boa driver is slow(msg: SetState to 1)(366 ms)] [UPSB driver is slow(msg: SetState to 2)(942 ms)] [UPSB driver is slow(msg: SetState to 2)(962 ms)] [AppleHPMIECS driver is slow(msg: WillChangeState to 2)(1113 ms)] [AppleHPMIECS driver is slow(msg: WillChangeState to 2)(1118 ms)] [AppleIntelFramebuffer driver is slow(msg: SetState to 0)(352 ms)] [ATY,Boa driver is slow(msg: SetState to 0)(344 ms)] [AppleUSBVHCIBCE driver is slow(msg: SetState to 1)(324 ms)] [RP01 driver is slow(msg: SetState to 0)(1015 ms)] [RP17 driver is slow(msg: SetState to 2)(313 ms)] [UPSB driver is slow(msg: SetState to 2)(941 ms)] [UPSB driver is slow(msg: SetState to 2)(941 ms)] [ADIO driver is slow(msg: SetState to 2)(620 ms)] [ATY,Boa driver is slow(msg: SetState to 1)(371 ms)]
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