谢谢，可以考虑优化一下内存缓存吗
版本是2.19.2 Linux，默认分配1G内存缓存的情况下有30MB/s的上传，后面下调到512M发现上传也跟着砍半了
这个之前提到过，唯一的解决办法就是不使用进程内存缓存独享，转而采用操作系统内核系统缓存，Linux平台下改为 sendfile 调用操作系统缓存，Windows平台则是 TransmitFile ，应该在开发者的todo list里，还要等后续版本更新，高级设置开关来是否切换
描述：启用系统缓存，可设置为使用256MB的进程缓存，进程缓存不足时，读盘的时候通过 sendfile 函数则可实现操作系统缓存，或者彻底禁用缓存的时候才使用 sendfile 系统缓存
由于你设置512MB缓存，导致真实磁盘读取次数数值大幅上涨，读盘命中率大幅下跌，所以引起了上传速度被砍半的现象
比特彗星进程最小内存缓存应当设置为256MB，BT做种上传任务提升磁盘读取性能达到99%命中率，16MB区块和宽带速度关系
https://bbs.itzmx.com/thread-111576-1-1.html
为什么比特彗星从任务管理器来看发现进程内存占用比qbittorrent高 系统级磁盘缓存
https://bbs.itzmx.com/thread-104963-1-1.html
毕竟有时候操作系统缓存是不可信的，某些用户会导致qb出现卡死崩溃现象，提供一个开关很有必要
并且BT可能需要进行加密传输，基于https的 SSL_sendfile 并不适用在BT上（而且iouring需要较高的5.10内核版本，推荐6.1及后续），函数使用 sendfile 最大的特点就是支持操作系统缓存（ 2.1及以上内核实测可用，推荐2.4及后续）
1個讚
希望后续能加上操作系统缓存吧，我的服务器硬盘IO还算可以，因为性能问题目前又用回去qb做种了
是的，现在比特彗星这种读盘策略就是需要大内存作为磁盘缓存，等后续支持 sendfile 操作系统缓存了，Linux版本下的性能就能在1GB小内存的VPS服务器中和 Transmission、qbittorrent 一样了
毕竟也才刚跨平台没多久，主力更新还是在Windows端，在2024年12月提到，目前一年暂时还没实现。
感谢反馈，下一版已修复
磁力下載點：magnet:?xt=urn:btih:LAOUKQCBSIPB66AO6Y6CVYHOYW6GL5H3
1個讚
浏览器上复制磁力链接，然后客户端崩溃了，错误报告好像没发上去，看了下这个zip文件不见了
Start collecting information about the crash...
[taking_screenshot]
Desktop screenshot generation disabled; skipping.
Creating crash dump file...
[creating_dump]
Dumping info for module D:\BitComet Stable (build 2.19.12.15) 比特彗星全功能解锁豪华版\BitComet_x64.exe
Dumping info for module C:\Windows\System32\ntdll.dll
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Finished creating dump.
[copying_files]
Finished copying files.
[encoding_video]
Desktop video recording disabled; skipping.
[confirm_send_report]
Restarting the application...
Application restarted OK.
[compressing_files]
Total file size for compression is 841434 bytes
Creating ZIP archive file C:\Users\Administrator\AppData\Roaming\BitComet\crash_report\f97dc36e-5d97-49d2-a85f-8043beb7f514.zip
Compressing file crashdump.dmp
Compressing file crashrpt.xml
Calculating MD5 hash for file C:\Users\Administrator\AppData\Roaming\BitComet\crash_report\f97dc36e-5d97-49d2-a85f-8043beb7f514.zip
Finished compressing files...OK
[end_compressing_files]
[sending_report]
[sending_attempt]
Sending error report over HTTP...
Preparing HTTP request data...
Calculating size of data to send.
Opening Internet connection.
Connecting to server
Opening HTTP request...
Sending HTTP request...
Ending HTTP request...
Reading server response...
Server response code: 200
Server response body:450 Crash report disc quota for this project has exceeded.
Assuming legacy method of determining delivery status (from HTTP response body).
Failed (HTTP response body doesn't start with code 200).
Error sending HTTP request.
[sending_attempt]
Sending error report over SMTP is disabled (negative priority); skipping.
[sending_attempt]
Sending error report over SMAPI is disabled (negative priority); skipping.
[status_failed]
服务器上做个垃圾清理？自动删除2天之前的崩溃报告文件，这样客户端就不会发送失败了
rm -rf /home/crash_report/`date "+%Y-%m-%d" -d "-2day"`
感谢反馈，需要运行服务器上的清理脚本了
2.20 正式版预览已打包，欢迎使用
1個讚
磁力下载点：magnet:?xt=urn:btih:SRSKUJIMPSJ5RSOUWD3VRVLJEGHJLA4E
磁力下载点2: magnet:?xt=urn:btmh:1220e008242d350a483fcdec34d89320e93a152bc9f6363ea5dd7af8026ec1bb7471
现在启用预览优化的时候，顺序下载正常了
不过测试了下，顺序下载好像只对100%完成度的种子用户起效果
假设对方是50%进度的时候，就算对方的完成区块是连续的，此时彗星客户端不会对他进行请求顺序下载，这是符合预期设计吗？
感谢反馈，下一版已修复
不符合预期。只要对方有目标分块，也应该去请求下载的
我觉得也是，只有对方返回阻塞上传时，才随机请求来获取区块，毕竟顺序下载可能影响下载速度
1個讚
之前提的 单文件可用度/单文件健康度 也加一下吧
BC不适合伺服器用，要有心理准备